DESC:TECHNICAL FIELD

The present disclosure generally relates to a clutch system of a vehicle. The embodiments of the present disclosure relates to a mechanical clutch system with pedal assistance mechanism for providing easiness and versatility in actuating the clutch system.

BACKGROUND OF THE DISCLOSURE

At the beginning of vehicle era, vehicle manufacturers had developed cable operated/mechanical linkage operated direct clutch engagement system. In this direct clutch engagement system, the amount of force applied by the user on the clutch pedal was determining the amount of force directly acting on the clutch engagement assembly. The users had to use high actuation force on the clutch pedal to engage the clutch. This activity was cumbersome and would develop a lot of fatigue on the user’s legs. Also, when the vehicle is travelling in heavy traffic (bumper to bumper traffic) or in hilly regions, frequent gear changes have to be made by the user. This leads to actuation of the clutch pedal frequently during the entire journey which leads to fatigue of the user.

Later as the vehicle population increased, vehicle manufacturers introduced a clutch pedal system with a single compression spring to assist the clutch pedal depression to reduce the fatigue of the user. As always, obtaining clutch pedal feel of conventional systems was always a challenge. Due to the provision of the compression spring, there was always a reaction return force generated by the clutch pedal. When the user in conventional systems actuates the clutch pedal in a forward direction, there is always an effect on the return clutch pedal. This causes uncontrolled vehicle launch and clutch engagement.

Also in the conventional clutch systems, the clutch return load is comparatively less due to the problems mentioned above. This low return force also causes slow clutch pedal return, wherein the clutch is partially engaged with the gear. This causes clutch wear and causes reduction in the clutch life. However, in some of the conventional clutch systems there is provided Self Adjusting Clutch (SAC) systems which aid in reduction of actuation forces from the user on the clutch pedal hence providing lesser effort and better clutch pedal feel in forward direction. Nonetheless, SAC’s also have their own disadvantages such as, slow clutch pedal movement which increases the clutch slippage time and reduces clutch life. Also, when the vehicle is in continuous usage, i.e. in heavy traffic wherein frequent gear changes have to be made, the temperature of the clutch assembly increases considerably and clutch pedal feel is lost. This causes decrease in the overall efficiency of the engine.

In light of the foregoing discussion, there is a need to develop a mechanical clutch actuation system with pedal assistance mechanism to overcome the limitations stated above.

OBJECTIVES OF THE DISCLOSURE

One objective of the present disclosure is to provide a mechanical clutch assistance mechanism which provides assistance to the user during forward clutch pedal movement, and also provides clutch pedal return force during reverse clutch pedal movement.

Another objective of the present disclosure is to provide a resistance force to the clutch actuation during the initial forward clutch pedal operation.

Another objective of the present disclosure is to provide retraction force to the clutch pedal during initial clutch pedal return operation.

SUMMARY OF THE DISCLOSURE

One or more shortcomings of the prior art are overcome and additional advantages are provided through the present disclosure. Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure.

Accordingly, in one non-limiting embodiment of the present disclosure there is provided a mechanical clutch actuation system for a vehicle. The system comprises a support bracket connectable to a firewall of the vehicle. A pedal arm, wherein an upper end of the pedal arm is pivotally mounted to the support bracket and a lower end of the pedal arm is provided with a pedal pad and a pedal assistance mechanism connected in between the support bracket and the pedal arm to assist the system during clutch engagement and disengagement. Pedal assistance mechanism comprises: a stay rod pivotally connected to the pedal arm, wherein said stay rod is configured to pass through a first stopper plate which is connected to the support bracket, and a second stopper plate is fixed to the stay rod with predetermined distance from the first stopper plate. A first resilient member provisioned in between the first stopper plate and a housing member, wherein the first resilient member is configured to apply a forward pedal resisting force to the pedal arm upon movement of said pedal arm between an initial position up to a first toggle position, and a forward pedal assisting force upon movement of the pedal arm between the first toggle position up to a final position. A second resilient member configured within the housing member, wherein the second resilient member is configured to apply reverse pedal resisting force to the pedal arm upon release of said pedal arm between the final position up to the second position.

In an embodiment of the present disclosure, the first resilient member compresses upon movement of the pedal arm between initial position up to first toggle position.

In an embodiment of the present disclosure, the first resilient member expands upon movement of the pedal arm between first toggle position up to second position.

In an embodiment of the present disclosure, the second resilient member expands upon movement of pedal arm between second position up to final position.

In an embodiment of the present disclosure, one end of the stay rod is pivoted at point A of the support bracket and the other end of the stay rod is pivoted at point B on the pedal arm.

In an embodiment of the present disclosure, the housing member is mounted on the stay rod in between the first stopper plate and the second stopper plate.

In an embodiment of the present disclosure, the first resilient member is a compression spring.

In an embodiment of the present disclosure, the second resilient member is at least one of Belleville spring, and compression spring.

In another non-limiting embodiment of the present disclosure there is provided a method of operating a mechanical clutch actuating system. The method comprising steps of: actuating a pedal arm in forward direction from initial position to a final position for engaging or disengaging the clutch, wherein actuation of pedal arm in forward direction and reverse direction comprises acts of: Actuating a pedal arm in forward direction between an initial position up to a first toggle position, wherein a first resilient member is configured to apply a forward pedal resisting force to the pedal arm when the pedal arm moves between initial position up to first toggle position. Actuating the pedal arm between the first toggle position up to a second position, wherein said first resilient member is configured to apply a forward pedal assisting force when the pedal arm moves between first toggle position up to second toggle position. Actuating the pedal arm between the second position up to final position, wherein the second resilient member applies a forward pedal resisting force when the pedal arm moves between second toggle position up to final position. Releasing the pedal arm to disengage the clutch, wherein the second resilient member applies reverse pedal resisting force to the pedal arm upon release of said pedal arm between the final position up to a second position.

In an embodiment of the present disclosure, the first resilient member compresses upon movement of the pedal arm between initial position up to first toggle position.

In an embodiment of the present disclosure, the first resilient member expands upon movement of the pedal arm between first toggle position up to second position.

In an embodiment of the present disclosure, the second resilient member expands upon movement of pedal arm between second position up to final position.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS

The features of the present disclosure are set forth with particularity in the following description. The disclosure itself, together with further features and attended advantages, will become apparent from consideration of the following detailed description, taken in conjunction with the accompanying drawings. One or more embodiments of the present disclosure are now described, by way of example only, with reference to the accompanied drawings wherein like reference numerals represent like elements and in which:

Figure 1 illustrates a perspective view of mechanical clutch pedal actuation system with a clutch assistance mechanism in accordance with an embodiment of the present disclosure.

Figure 2 illustrates sectional view of pedal assistance mechanism in accordance with some embodiment of the present disclosure.

Figure 3a illustrates side view of the mechanical clutch pedal actuation system of FIG. 1 in which the clutch pedal is in initial position.

Figure 3b illustrates side view of the mechanical clutch pedal actuation system of FIG. 1 in which the clutch pedal is in final actuated position.

Figure 4 illustrates an alternate embodiment of the mechanical clutch pedal assistance mechanism of the present disclosure.

Figure 5 illustrates pedal arm actuation effort graph for various intervals of pedal arm play

The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION

The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the claims of the disclosure. It should be appreciated by those skilled in the art that the conception and specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the disclosure as set forth in the appended claims. The novel features which are believed to be characteristic of the disclosure, both as to its organization and method of operation, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure. It will be readily understood that the aspects of the present disclosure, as generally described herein, and illustrated in the figures, can be arranged, substituted, combined, and designed in a wide variety of different configurations, all of which are explicitly contemplated and make part of this disclosure.

The terms “comprises”, “comprising”, or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a system, device or method that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or device or method. In other words, one or more elements in a system or apparatus proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the system or apparatus.

To overcome the limitations stated in the background the present disclosure provides a mechanical clutch pedal actuation system with a pedal assistance mechanism. The pedal assistance mechanism provides forward pedal assistance force to the pedal arm during forward travel of the pedal, and resistance force to the pedal arm during reverse pedal travel. Thus, it ensures easiness to the user for engaging and disengaging the clutch, at the same time ensuring the proper return travel of the clutch pedal. In addition to the above, the pedal assistance mechanism provides forward pedal resistance force to the clutch pedal during its initial travel, as an example up to 20% of the forward pedal travel, thereby ensures that no force will act on the clutch when the user un-intentionally rests his leg on the clutch pedal during vehicle operation.

The clutch actuation system of the present disclosure consists of a pedal arm, wherein one end of the pedal arm is provided with a pedal pad also referred as foot pad for providing grip to the user and also to actuate the pedal arm. The other end of the pedal arm is pivotally connected to a support bracket providing the pedal arm a fulcrum action. A pedal assistance mechanism is provided in the system, and is fixed on the pedal arm with a stay rod such that, one end of the stay rod is fixed to the support bracket and the other end is fixed to the pedal arm in the vicinity of the pedal pad. The pedal assistance mechanism is pivotally fixed at both ends which aids in assisting the forward pedal movement and reverse pedal movement of the clutch pedal arm. The pedal assistance mechanism is equipped with a first resilient member for providing assistance as well as resistance force to the pedal arm at different instances of pedal movement such as Initial position, first toggle position, second position and final position. The pedal assistance mechanism further comprises of a second resilient member which aids the pedal arm play or movement, during return travel of the pedal arm from final position to second position.

In an embodiment of the disclosure, when the pedal arm moves between an initial position up to a first toggle position, the pedal assistance mechanism applies a forward pedal resisting force to the pedal arm due to compression of the first resilient member. Subsequently, moving the pedal arm between the first toggle position up to a second position, the pedal assistance mechanism applies a forward pedal assisting force to the pedal arm by the expansion of the first resilient member, thereby assisting the user for depressing the clutch pedal. Consequently, moving the pedal assistance mechanism applies a forward pedal assistance force when the pedal arm moves between the second position up to final position by the expansion of the second resilient member. Lastly, when the pedal arm is released to engage the clutch, the pedal assistance mechanism applies a retraction assisting force to the pedal arm between the final position up to a second position due to compression of the second resilient member.

Referring now to the drawings wherein the drawings are for the purpose of illustrating an exemplary embodiment of the disclosure only, and not for the purpose of limiting the same

While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the spirit and the scope of the disclosure.

Figure 1 is an exemplary embodiment of the present disclosure which illustrates perspective view of mechanical clutch actuation system (100) with a clutch assistance mechanism (100a). The system (100) comprises a support bracket (1) mounted on firewall [not shown] of the vehicle for supporting the clutch actuation system (100). The support bracket (1) comprises a pair of side arms extending from top of the support bracket (1) for mounting a pedal arm (2), stay rod (4) of the system (100). The pedal arm (2) consists of two ends, upper end (2a) and lower end (2b). The upper end (2a) of the pedal arm (2) is pivotally fixed on a support bracket (1) and the lower end (2b) of the pedal arm (2) is equipped with a pedal pad (2) also referred as foot pad. The pedal arm (2) moves from an initial position (IP) up to a final position (FP) in order to engage or disengage the clutch. The pedal pad (3) fixed at the lower end (2b) of the pedal arm (2) provides grip to the user for actuating the pedal arm (2). In an embodiment of the present disclosure, the pedal pad (3) is at least one of steel pad, stainless steel pad, aluminium and polymeric materials.

The clutch actuation system (100) comprises a pedal assistance mechanism (100a) to assist the movement of pedal arm (2) during forward and return motion. The pedal assistance mechanism (100a) consists of a stay rod (4) wherein one end of the stay rod (4) is pivotally fixed on the support bracket (1) at point (A) and other end of the stay rod (4) is pivotally fixed on the pedal arm (2) at point (B). The stay rod (4) accommodates a first stopper plate (5), second stopper plate (6) and a housing member (8). The first stopper plate (5) is pivotally fixed to the support bracket (1) at point (A), and the stay rod (4) passes through the first stopper plate (5). In an embodiment of the present disclosure, the first stopper plate (5) is a wedge shaped stopper which is at least one of, but is not limited to, polymer stopper plate, steel stopper plate, stainless steel stopper plate and aluminium stopper plate. Further, a second stopper plate is fixed to the stay rod with a predetermined distance from the first stopper plate. In an embodiment, the second stopper plate may be formed as integral part of the stay rod or may be attached to the stay rod by permanent joining or detachable methods which are known in the art. In an embodiment, the predetermined distance between the first stopper plate and the second stopper plate will vary from vehicle to vehicle and it depends on the stiffness and length of the resilient members to be accommodated.

Further, a first resilient member (7) is fixed on to the stay rod (4) in-between the first stopper plate (5) and a housing member (8) to assist the user during forward pedal actuation of the clutch pedal arm (2). In an embodiment of the disclosure, the first resilient member (7) is a compression spring, which expands and retracts in accordance with the movement of the pedal arm (2). The housing member (8) is equipped on the stay rod (4) below the first resilient member (7) and shape of the housing member, for example is a cup shaped hollow housing. In an embodiment, the first resilient member (7) is supported on the outer surface of the housing member (8). Further, the housing member (8) houses a second resilient member (9), wherein the second resilient member (9) is fixed to the inner surface of the housing member (8) at one end and other end of the second resilient member (6) is fixed to the second stopper plate (6).

Figure 2 is an exemplary embodiment of the disclosure which illustrates pedal assistance mechanism (100a) of the present disclosure. The pedal assistance mechanism (100a) comprises a first stopper plate (5), a housing member (8), and a second stopper plate (6) configured on the stay rod (4). A first resilient member (7) is placed in-between the first stopper plate (5) and the housing member (8), and the housing member (8) houses the second resilient member (9). The pedal assistance mechanism (100a) provides assistance for the movement of pedal arm (2) during assistance and the retraction of the pedal arm (2). The second stopper plate (6) is fixed to the pedal arm (2) at a predetermined distance and may vary depending upon the size and length of the compression spring (7). In the embodiment of the present disclosure, pedal assistance mechanism (100a) of figure 2, the first resilient member is a compression spring, and the second resilient member is a Belleville spring. In an embodiment of the disclosure, the second resilient member (9) is at least one of Belleville spring or a compression spring. The Belleville spring (9) is made up of two parts namely the upper part (9a) and lower part (9b). The upper part (9a) and the lower part (9b) are joined together to form the second resilient member (9). The base of the lower part (9b) is fixed to the second stopper plate (6) and the top portion of the upper part (9a) is fixed to the inner surface of the housing member (8).

Figures 3a and 3b are exemplary embodiments of the present disclosure illustrating side view of the mechanical clutch pedal actuation system (100) in which the pedal arm is in initial position (IP) and final position (FP) respectively. When, the pedal arm (2) during its initial position (IP), the first resilient member (7) will be in a compressed state due to the forces acting on the first resilient member (7) from the first stopper plate (5) which is pivotally fixed to the support bracket (1). The second resilient member (9) is also in a state of equilibrium and no compression or expansion of the second resilient member (9) is taking place. The housing member (8) housed with the second resilient member (9) is in contact with the second stopper plate (6).

In an embodiment of the present disclosure, when the pedal arm (2) is moved from the initial position (IP) up to the first toggle position (FTP), the first resilient member (7) further compresses and offers forward pedal resisting force to the pedal arm (2). This resisting force from the first resilient member (7) prevents the clutch play or engagement at certain instances such as, when the user unknowingly rests his/her foot on the pedal arm. When the pedal arm (2) is further moved from the first toggle point (FTP) up to the second point (SP), the first resilient member (7) expands and offers forward pedal assisting force to the pedal arm (2). The first resilient member (7) expands from its compressed state and aids the pedal arm (2) in depressing further by reducing the effort acting on the pedal pad (3). The clutch is engaged or disengaged within the positions namely first toggle position (FTP) up to second position (SP). When the pedal arm (2) is moved from the second position (SP) up to the final position (FP), the first resilient member (7) is in its fully expanded state and offers negligible forward pedal assistance force, at that time the second resilient member (9) expands and pushes the housing member (8) in an upward direction and restricts further expansion of the first resilient member (7).

Further when the effort on the pedal pad (3) is removed or withdrawn, the second resilient member (9) in which is in its expanded state compresses hence allowing the first resilient member (7) to also compress. This compression forces from the first resilient member (7) and the second resilient member (9) retracts the pedal arm (2) from the final position (FP) to the second position (SP) then up to a first toggle position (FTP). Later, when the pedal retracts back up to the first toggle position (FTP), the first resilient member (7) starts to compress thereby retracting the pedal arm (2) back to its initial position (IP). This avoids the pedal arm (2) sticking to the user’s foot during operation of the pedal arm (2).

In an embodiment of the present disclosure, the first toggle position (FTP) axis line is provided at a predetermined distance ranging from about 15-25% of the total pedal travel from the initial position (IP), for example 20 % of the pedal arm travel from the initial position (IP) axis line in forward pedal direction. Further, the second position (SP) axis line is provided at a predetermined distance ranging from about 75-85% of the pedal travel from the initial position (IP), for example 80 % away from the initial position (IP).

In an embodiment of the present disclosure, the pedal assistance mechanism (100) during reverse pedal actuation of the pedal arm (2) provides resistance force to the said pedal arm (2) from final position (FP) up to second position (SP). For example, pedal arm (2) travel from 100% [i.e. Final position (FP)] up to 60 % [i.e. just after the second position (SP)] of the pedal arm (2) travel in reverse direction. This resistance force generated from the pedal assistance mechanism (100) aids the user to get better feedback from the clutch and jerky or jumpy movement of the vehicle can be avoided. For example, by providing appropriate feedback to the user from the pedal arm (2) in reverse pedal direction mitigates vehicle stalling, aiding in linear power delivery and drivability.

Figure 4 is an exemplary embodiment of the present disclosure which illustrates side view of the mechanical clutch pedal assistance system (100) equipped with pedal assistance mechanism of alternative arrangement. In the embodiment of the present disclosure, pedal assistance mechanism (100a) of figure 4, the first resilient member (7) is a compression spring, and the second resilient member (9) is also a compression spring. The second resilient member (9) housed within the housing member (8) is a compression spring (9). One end of the compression spring (9) is connected to the inner surface of the housing member (8) and the other end of the compression spring (9) is connected to the second stopper plate (6).

Figure 5 illustrates pedal arm (2) actuation effort graph for various intervals of pedal arm (2) play. The graph depicts a comparative data of the existing clutch assistance system with the mechanism (100a) explained in the present disclosure. From the graph, it is evident that maximum effort from the user is required for actuating the pedal arm (2) without pedal assistance mechanism (100a). The effort from the user on the pedal arm (2) is greatly reduced with the use of pedal assistance mechanism (100a). However, the curves shown below the par line are curves wherein, pedal effort is reduced due to the use of the pedal assistance mechanism (100a) disclosed in the present disclosure. Also, the curves, shows different amounts of pedal arm (2) force for compression spring (7), Belleville spring (9) and with the use of both compression spring (7) and Belleville spring (9). Moreover, the crest and trough as depicted in the graph depicts the amount of force required to perform the clutch pedal arm movements in engaging and disengaging the clutch.

ADVANTAGES

In one embodiment, the effort required from the user to engage or disengage the clutch in order to shift gears is reduced.

In one embodiment, the excessive effort from the user to engage the clutch is curbed by the second resilient member enhancing life of the clutch

In one embodiment, the needless engagement or disengagement of the clutch during clutch play from the initial position (IP) up to first toggle position (FTP) is restricted by the first resilient member thereby it prevents the wear of clutch, thus enhances clutch life.

EQUIVALENTS

With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.

It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”

In addition, where features or aspects of the disclosure are described in terms of Markush groups, those skilled in the art will recognize that the disclosure is also thereby described in terms of any individual member or subgroup of members of the Markush group.

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

REFERRAL NUMERALS

Mechanical clutch actuation system 100
Pedal assistance mechanism 100a
Support bracket 1
Pedal arm 2
Upper end of pedal arm 2a
Lower end of pedal arm 2b
Pedal pad 3
Stay Rod 4
First stopper plate 5
Second stopper plate 6
First resilient member 7
Housing member 8
Second resilient member 9
Upper part of second resilient member 9a
Lower part of second resilient member 9b
Initial Position IP
First Toggle Position FTP
Second Position SP
Final Position FP

,CLAIMS:WE CLAIM:

1. A mechanical clutch actuation system (100) for a vehicle comprising:
a support bracket (1) connectable to a firewall of the vehicle;
a pedal arm (2), wherein an upper end (2a) of the pedal arm (2) is pivotally mounted to the support bracket (1), and a lower end (2b) of the pedal arm (2) is provided with a pedal pad (3); and
a pedal assistance mechanism (100a) connected in between the support bracket (1) and the pedal arm (2) to assist the system (100) during clutch engagement and disengagement, wherein said pedal assistance (100a) mechanism comprises:
a stay rod (4) pivotally connected to the pedal arm (2), wherein said stay rod (4) is configured to pass through a first stopper plate (5) which is connected to the support bracket (1), and a second stopper plate (6) is fixed to the stay rod (4) with predetermined distance from the first stopper plate (5);
a first resilient member (7) provisioned in between the first stopper plate (5) and a housing member (8), wherein the first resilient member (7) is configured to apply a forward pedal resisting force to the pedal arm (2) upon movement of said pedal arm (2) between an initial position (IP) up to a first toggle position (FTP), and a forward pedal assisting force upon movement of the pedal arm (2) between the first toggle position (FTP) up to a final position (FP); and
a second resilient member (9) configured within the housing member (8), wherein the second resilient member (9) is configured to apply reverse pedal resisting force to the pedal arm (2) upon release of said pedal arm (2) between the final position (FP) up to the second position (SP).

2. The system (100) as claimed in claim 1, wherein the first resilient member (7) compresses upon movement of the pedal arm (2) between initial position (IP) up to first toggle position (FTP).

3. The system (100) as claimed in claim 1, wherein the first resilient member (7) expands upon movement of the pedal arm (2) between first toggle position (FTP) up to final position (FP).

4. The system (100) as claimed in claim 1, wherein the second resilient member (9) expands upon movement of pedal arm (2) between second position (SP) up to final position (FP).

5. The system (100) as claimed in claim 1, wherein one end of the stay rod (4) is pivoted at point (A) of the support bracket (1) and the other end of the stay rod (4) is pivoted at point (B) on the pedal arm (2).

6. The system (100) as claimed in claim 1, wherein the housing member (8) is mounted on the stay rod (4) in between the first stopper plate (5) and the second stopper plate (6).

7. The system (100) as claimed in claim 1, wherein the first resilient member (7) is a compression spring.

8. The system (100) as claimed in claim 1, wherein the second resilient member (9) is at least one of Belleville spring, and compression spring.

9. A method of operating a mechanical clutch actuating system (100) comprising steps of:
actuating a pedal arm (2) in forward direction from initial position (IP) to a final position (FP) for engaging or disengaging the clutch, wherein actuation of pedal arm (2) in forward direction and reverse direction comprises acts of:
actuating a pedal arm (2) in forward direction between an initial position (IP) up to a first toggle position (FTP), wherein a first resilient member (7) is configured to apply a forward pedal resisting force to the pedal arm (2) when the pedal arm (2) moves between initial position (IP) up to first toggle position (FTP);
actuating the pedal arm (2) between the first toggle position (FTP) up to a final position (FP), wherein said first resilient member (7) is configured to apply a forward pedal assisting force when the pedal arm (2) moves between first toggle position (FTP) up to final position (FP);
releasing the pedal arm (2) to disengage the clutch, wherein a second resilient member (9) applies reverse pedal resisting force to the pedal arm (2) upon release of said pedal arm (2) between the final position (FP) up to a second position (SP).

10. The method as claimed in claim 9, wherein the first resilient member (7) compresses upon movement of the pedal arm (2) between initial position (IP) up to first toggle position (FTP).

11. The method as claimed in claim 9, wherein the first resilient member (7) expands upon movement of the pedal arm (2) between first toggle position (FTP) up to final position (FP).

12. The method as claimed in claim 9, wherein the second resilient member (9) expands upon movement of pedal arm (2) between second position (SP) up to final position (FP).

13. A vehicle having a mechanical clutch actuation system (100) as claimed in claim 1.