Description:TECHNICAL FIELD

The present subject matter generally relates to an operation of an automobile engine. More particularly, but not exclusively, the present disclosure discloses a circuit for providing delay to vary revolutions per minute of an engine.

BACKGROUND

Generally, engine starter protective systems are deployed to prevent damage of an engine. The
revolutions per minute associated with the engine affects the performance of the engine and causes wear and tear. The existing techniques include automatic disengagement of a starting function when the engine reaches a predetermined "run" speed, prevention of reengagement of a starter while the engine is running, and automatic de-energizing of a starter relay above a predefined revolution per minute (RPM) value of the engine and the like.

However, a driver or a user may vary the RPM of the engine immediately after the engine is started by increasing the throttle of the engine. The increase in the RPM after the starting of the engine may damage the cylinder rocker arm associated with the engine as the lubricating oil in the engine is not circulated completely. Therefore, there is a need to prevent the variation of the RPM of the engine until the oil is completely circulated to parts of the engine.

The information disclosed in this background of the disclosure section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMARY

Disclosed herein is a circuit for providing delay to vary Revolutions per Minute (RPM) of an engine. The circuit comprises at least one switch connected to a first relay, wherein the at least one switch is adapted to turn on the engine. Further, the circuit comprises the first relay connected to a contactor coil and a delay timer, wherein the first relay is operated from an Off Position to an On position by the at least one switch to establish contact with the contactor coil and the delay timer. Furthermore, the circuit comprises the delay timer for operating a second relay from the Off position to the On position after a predefined time period from a timestamp of contact with the first relay. Finally, the circuit comprises the contactor coil connected to the second relay for providing electric current to vary the RPM of the engine after the operation of the second relay.

In an embodiment, the present disclosure discloses a method of providing delay to vary Revolutions per Minute (RPM) of an engine. The method comprises operating a first relay connected to the at least one switch from an Off position to an On position to establish contact with a contactor coil and a delay timer, wherein the at least one switch is adapted to turn On the engine. Further, the method comprises operating a second relay connected to the delay timer, from the Off position to the On position after a predefined time period from a timestamp of contact with the first relay, wherein the first relay is connected to the contactor coil and the delay timer. Finally, the method comprises providing electric current to vary the RPM of the engine after the operation of the second relay.

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 DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate exemplary embodiments and, together with the description, serve to explain the disclosed principles. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the figures to reference like features and components. Some embodiments of system and/or methods in accordance with embodiments of the present subject matter are now described, by way of example only, and with reference to the accompanying figures, in which:

Fig.1 illustrates an exemplary circuit for providing delay to vary revolutions per minute of an engine in accordance with some embodiments of the present disclosure;

Fig.2 illustrates an exemplary operation of at least one switch in accordance with some embodiments of the present disclosure;

Fig.3 shows an exemplary operation of first relay based on a first user input in accordance with some embodiments of the present disclosure;

Fig.4 shows an exemplary operation of second relay after a predefined time period in accordance with some embodiments of the present disclosure; and

Figs.5 shows a flowchart illustrating a process of providing a delay to vary the revolutions per minute of an engine in accordance with some embodiments of the present disclosure.

It should be appreciated by those skilled in the art that any block diagrams herein represent conceptual views of illustrative systems embodying the principles of the present subject matter. Similarly, it will be appreciated that any flow charts, flow diagrams, state transition diagrams, pseudo code, and the like represent various processes which may be substantially represented in computer readable medium and executed by a computer or processor, whether or not such computer or processor is explicitly shown.

DETAILED DESCRIPTION
In the present document, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

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 specific forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the disclosure.
The terms “comprises”, “comprising”, “includes”, “including” or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a setup, 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 method.
In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration of embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.

Fig.1 illustrates an exemplary circuit for providing delay to vary revolutions per minute of an engine in accordance with some embodiments of the present disclosure.

The present disclosure relates to a circuit (100) for providing delay to vary the Revolutions Per Minute (RPM) of an engine. The circuit (100) comprises a battery (101) connected to at least one switch (102A and 102B) via a first switch (103). Further, the at least one switch (102B) is connected to a contactor coil (104) and a delay timer (105) via a first relay (106). The delay timer (105) is connected to a negative terminal of the battery (101) via a second switch (107). Further, the delay timer (105) is connected to a positive terminal of the battery (101) via the at least one switch (102A). The delay terminal and the contactor coil (104) are connected to a second relay (108) as shown in Fig.1. Further, the at least one switch (102B) and the second relay (108) is connected to other circuit (100) associated with the engine. When a vehicle is in a parked state and the engine is in a switched-off state, the first switch (103), the at least one switch (102A and 102B), the first relay (106), the second switch (107), and the second relay (108) may be in an Off position (i.e. open state) as shown in Fig.1.

In an embodiment, a user or a driver operates the at least one switch (102A) from an Off position (i.e. open state) to an On position (i.e. closed state) using a key associated with a vehicle to power on the vehicle as shown in Fig.2. Upon the operation of the at least one switch (102A) to the On position, the first switch (103) associated with the battery (101) is operated from the Off position to the On position. Further, the second switch (107) connects the delay timer (105) to the negative terminal of the battery (101) as shown in Fig.2. The positive terminal of the battery (101) provides energy for the operation of the delay timer (105) via the at least one switch (102A) as shown in Fig.2. The connection between the second switch (107) and the delay timer (105) resets a counter (not shown in the figure) associated with the delay timer (105). The counter is reset by flushing a residual value present in the counter or by setting the value of the counter to zero. The counter may be housed inside the delay timer (105). Further, the at least one switch (102B), the first relay (106) and the second relay (108) are in the Off position as shown in Fig.2.

In an embodiment, the user or the driver may provide a first user input to the at least one switch (102B) connected to a first relay (106). The first user input operates the at least one switch (102B) from the Off position (i.e. open state) to the On position (i.e. closed state) as shown in Fig.3. The at least one switch (102B) may be a push button associated with the vehicle. Upon the user operating the at least one switch (102B) to the On position, the at least one switch (102B) is adapted to turn on the engine via the other circuit (100).

Further, in an embodiment, when the at least one switch (102B) is operated to the On position, the first relay (106) receives the energy from the battery (101) via the at least one switch (102A and 102B). The first relay (106) is operated from an Off Position to an On position by the at least one switch (102B) based on the first user input using the energy received from the battery (101) as shown in Fig.3. The second switch (107) disconnects the negative terminal of the battery (101) to the delay timer (105) as shown in Fig.3. The first relay (106) in the On position establishes a contact with the contactor coil (104) and the delay timer (105) as shown in Fig.3. Further, the first relay (106) is configured to send a first electrical signal to the delay timer (105) and the contactor coil (104) using the energy from the battery (101).

In an embodiment, the delay timer (105) receives the first electrical signal from the first relay (106) and sets the value of the counter to a predefined time period and starts counting. For example, the predefined time period may be 60 seconds, then the value associated with the counter may be 35683. The person skilled in the art appreciates one or more techniques to compute the counter value based on the predefined timer period using a clock associated with the delay timer (105). For example, if the required delay is 30 sec and a frequency of the clock is 4 kilohertz, then the value associated with the counter is 30 * 4,000 = 120,000. The delay timer (105) triggers the counter to count until the predefined time period has elapsed. After the completion of the predefined time period, the delay timer (105) generates a second electrical signal to operate the second relay (108) from the Off position to the On position as shown in Fig.4. The second electrical signal is generated using the energy from the battery (101). Further, the contactor coil (104) provides electric current to vary the RPM of the engine based on a second user input. The second user input may be received from the other circuit (100). For example, if the second user input indicates an increase in a throttle then the contactor coil (104) increases the electric current to increase the RPM of the engine.

Fig.5 shows a flowchart illustrating a process of providing delay to vary the Revolutions per Minute (RPM) of the engine in accordance with some embodiments of the present disclosure.

The order in which the method 500 is described is not intended to be construed as a limitation, and any number of the described method blocks can be combined in any order to implement the method. Additionally, individual blocks may be deleted from the methods without departing from the scope of the subject matter described herein. Furthermore, the method can be implemented in any suitable hardware.

At block 501, the method may comprise operating the first relay (106) connected to the at least one switch (102B) from the Off position to the On position to establish the contact with the contactor coil (104) and the delay timer (105), where the at least one switch (102B) is adapted to turn On the engine.

In an embodiment, operating the first relay (106) includes receiving by the at least one switch (102B) the first user input to turn On the engine. The at least one switch (102B) may be a push button and the first user input indicates operating the at least one switch (102B) to turn on the engine. Further, the first user input operates the first relay (106) from the Off position to the On position as shown in Fig.3.

In an embodiment, upon receiving the first user input, the first relay (106) sends the first electrical signal to the delay timer (105) and the contactor coil (104), when the first relay (106) is operated from the Off position (i.e. Open state) to the On position (i.e. Closed state) using energy from a battery (101) associated with a circuit (100).

At block 502, the method may comprise operating a second relay (108) connected to the delay timer (105), from the Off position to the On position after a predefined time period from a timestamp of contact with the first relay (106), where the first relay (106) is connected to the contactor coil (104) and the delay timer (105).

In an embodiment, the delay timer (105) receives the first electrical signal from the first relay (106) based on the first user input. The delay timer (105) sets the value of the counter equivalent to the predefined time period. Further, the delay timer (105) triggers the counter to count until the predefined time period. The counter decrements the value by one for every clock cycle associated with the delay timer (105). When the value of the counter reaches zero, the predefined time period is complete. The delay timer (105) generates the second electrical signal to operate the second relay (108) from the Off position (i.e. Open state) to the On position (i.e. Closes state) after the predefined time period using energy from a battery (101) associated with a circuit (100) as shown in Fig.4.

At block 503, the method may comprise providing the electric current to vary the RPM of the engine after the operation of the second relay (108).

In an embodiment, the electric current may be provided via the contactor coil (104) to vary the RPM of the engine based on the second user input. The second use input may be received from the other circuit (100). The second user input indicates one of an increase or decrease in the RPM of the engine.

The circuit (100) for providing delay to vary the RPM of the engine protects the engine from wear and tear. The delay timer (105) prevents the change in the RPM of the engine by retaining the second relay (108) in the Off position (i.e. open state) until the completion of the predefined time period. The delay timer (105) prevents the variation in the RPM of the engine irrespective of the change in the throttle based on the second user input until the completion of the predefined time period. The predefined time period provides sufficient time for the oil to circulate in the engine and provide lubrication to the parts of the engine and prevents the damage to the engine.

The terms "an embodiment", "embodiment", "embodiments", "the embodiment", "the embodiments", "one or more embodiments", "some embodiments", and "one embodiment" mean "one or more (but not all) embodiments of the invention(s)" unless expressly specified otherwise.

The terms "including", "comprising", “having” and variations thereof mean "including but not limited to", unless expressly specified otherwise. The enumerated listing of items does not imply that any or all the items are mutually exclusive, unless expressly specified otherwise.

The terms "a", "an" and "the" mean "one or more", unless expressly specified otherwise.

A description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the invention.

When a single device or article is described herein, it will be clear that more than one device/article (whether they cooperate) may be used in place of a single device/article.

Similarly, where more than one device or article is described herein (whether they cooperate), it will be clear that a single device/article may be used in place of the more than one device or article or a different number of devices/articles may be used instead of the shown number of devices or programs. The functionality and/or the features of a device may be alternatively embodied by one or more other devices which are not explicitly described as having such functionality/features. Thus, other embodiments of the invention need not include the device itself.

Finally, the language used in the specification has been principally selected for readability and instructional purposes, and it may not have been selected to delineate or circumscribe the inventive subject matter. It is therefore intended that the scope of the invention be limited not by this detailed description, but rather by any claims that issue on an application based here on. Accordingly, the embodiments of the present invention are intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.

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:
Reference Number Description
100 Circuit
101 Battery
102A and 102B At least one switch
103 First switch
104 Contactor coil
105 Delay timer
106 First relay
107 Second switch
108 Second relay

Claims:We Claim:
1. A circuit (100) for providing delay to vary Revolutions per Minute (RPM) of an engine, the circuit (100) comprising:
at least one switch (102A) connected to a first relay (106), wherein the at least one switch (102A) is adapted to turn on the engine;
the first relay (106) connected to a contactor coil (104) and a delay timer (105), wherein the first relay (106) is operated from an Off Position to an On position by the at least one switch (102A) to establish contact with the contactor coil (104) and the delay timer (105);
the delay timer (105) for operating a second relay (108) from the Off position to the On position after a predefined time period from a timestamp of contact with the first relay (106); and
the contactor coil (104) connected to the second relay (108) for providing electric current to vary the RPM of the engine after the operation of the second relay (108).

2. The circuit (100) as claimed in claim 1, wherein the at least one switch (102A) is configured to
receive a first user input to turn on the engine; and
operate the first relay (106) from the Off position to the On position based on the first user input.

3. The circuit (100) as claimed in claim 1, wherein the first relay (106) is configured to send a first electrical signal to the delay timer (105) and the contactor coil (104), when the first relay (106) is operated from the Off position to an On position using energy from a battery (101) associated with the circuit (100).

4. The circuit (100) as claimed in claim 1, wherein the delay timer (105) is configured to:
receive a first electrical signal from the first relay (106);
trigger a counter associated with the delay timer (105) to count until the predefined time period; and
generate a second electrical signal to operate the second relay (108) from the Off position to the On position after the predefined time period using energy from a battery (101) associated with the circuit (100).

5. The circuit (100) as claimed in claim 1, wherein the second relay (108) is operated from the Off position to the On position after the predefined time period to provide the electric current via the contactor coil (104) to vary the RPM of the engine based on a second user input.

6. A method of providing delay to vary Revolutions per Minute (RPM) of an engine, the method comprising:
operating, by at least one switch (102A), a first relay (106) connected to the at least one switch (102A) from an Off position to an On position to establish contact with a contactor coil (104) and a delay timer (105), wherein the at least one switch (102A) is adapted to turn On the engine;
operating, by the delay timer (105), a second relay (108) connected to the delay timer (105), from the Off position to the On position after a predefined time period from a timestamp of contact with the first relay (106), wherein the first relay (106) is connected to the contactor coil (104) and the delay timer (105); and
providing, by the contactor coil (104), electric current to vary the RPM of the engine after the operation of the second relay (108).

7. The method as claimed in claim 6, wherein operating the first relay (106) comprises:
receiving by the at least one switch (102A) a first user input to turn On the engine; and
operating the first relay (106) from the Off position to the On position based on the first user input.

8. The method as claimed in claim 6, comprises sending a first electrical signal, by the first relay (106) to the delay timer (105) and the contactor coil (104), when the first relay (106) is operated from the Off position to the On position using energy from a battery (101) associated with a circuit (100).

9. The method as claimed in claim 6, wherein operating the second relay (108) comprises:
receiving by the delay timer (105), a first electrical signal from the first relay (106);
triggering by the delay timer (105), a counter associated with the delay timer (105) to count until the predefined time period; and
generating a second electrical signal to operate the second relay (108) from the Off position to the On position after the predefined time period using energy from a battery (101) associated with a circuit (100).

10. The method as claimed in claim 6, comprises providing the electric current via the contactor coil (104) to vary the RPM of the engine based on a second user input.