CLIAMS:We claim:
1. An engine head cover assembly (100) comprising:

An oil filling port (3) provisioned at a predetermined location on top surface of the engine head cover (1);
an oil channel (2) is provided in between the oil filling port (3) and an oil discharge port (4) of the engine head cover (1), wherein the oil channel (2) is supported on top surface of the engine head cover (1), and is inclined at a predetermined angle with respect to horizontal plane of the engine head cover (1).

2. The engine head cover assembly (100) as claimed in claim 1, wherein the predetermined angle ranges from about 4 degrees to 8 degrees.

3. The engine head cover assembly (100) as claimed in claim 1 comprises at least one support member (5) provisioned at predetermined location on top surface of the engine head cover to support the oil channel (2).

4. The engine head cover assembly as claimed in claim 1, wherein the channel (2) comprises at least one lug (6) at predetermined location.

5. The engine head cover assembly as claimed in claim 4, wherein the at least one lug (6) is connectable to the engine head cover (1) for holding the channel (2) on the engine head cover (1).

6. The engine head cover assembly as claimed in claim 1, wherein the oil discharge port (4) is connectable to an engine oil filling port (3) for supplying the oil to the engine crank case.

7. The engine head cover assembly as claimed in claim 6 includes at least one sealing member (7), wherein the sealing member (7) is provided in a connecting junction of the oil discharge port (4) and the engine oil filling port.

8. The engine head cover assembly as claimed in claim 7, wherein the sealing member (7) is selected from at least one of O-rings, gaskets and rubber seals.

9. The engine head assembly cover as claimed in claim 1 comprises a closure (8) adapted to close the oil filling port (3).

10. The engine head cover assembly as claimed in claim 1, wherein a plurality of holes (10) are provided in the periphery of the engine head cover (1), for fastening the engine head cover (1) on the periphery of the engine head.

Dated this 26th Day of December, 2013 GOPINATH A.S. IN/PA 1852
OF K&S PARTNERS
AGENT FOR THE APPLICANT

,TagSPECI:FORM 2
THE PATENTS ACT, 1970 (as amended)
[39 OF 1970]
&
The Patents Rules, 2003

COMPLETE SPECIFICATION
[See Section 10 and Rule 13]

TITLE: “AN ENGINE HEAD COVER ASSEMBLY”

Name and Address of the Applicant:
TATA MOTORS LIMITED, an Indian Company, having its registered office at Bombay House, 24 Homi Mody Street, Hutatma Chowk, Mumbai 400 001 Maharashtra, India.

Nationality: Indian

The following specification particularly describes the invention and the manner in which it is to be performed.
TECHNICAL FIELD
Embodiments of the disclosure relate to an engine head cover assembly, more particularly relates to the engine head cover assembly having an oil filling channel.

BACKGROUND OF THE DISCLOSURE
An internal combustion engine configured as a piston engine usually has a cylinder head with a cylinder head interior which is open at a cylinder head side. To cover the cylinder head interior, a cylinder head cover is mounted on the cylinder head. An oil filling port is provided on the cylinder head cover for filling the oil into the engine crack case. This oil filling port is fastened onto the port connecting the crank case. The oil for lubrication of the engine components is provided from the crank case during operation.

In recent past cylinder head covers are enclosed by engine head covers to protect engine from dust or any other foreign particles thereby ensuring no repeated cleaning of clogs in the valve mechanism mounted in the cylinder head. Another advantage of installing an engine head cover is the aesthetic look of the engine, as almost all the parts of the engine are enclosed by the engine head cover and thereby the cumbersomeness in look of the engine is eliminated.

An engine head cover of this type is disclosed in JP 6272528 herein after referred as 528’ patent. The engine head cover of 528 patent comprises an oil filler hole of a cylinder head cover for which a chamfer is provided. On this chamfer an ‘O’ ring is arranged. Thereafter, this O ring is pressed and held by a collar part of oil filler cap which is installed on the oil filler hole.

Another engine head cover of this type is described in US2010147273 herein after referred as 273’ patent application. The head cover of an internal combustion engine as described in the 273’ patent application comprises a concave ceiling wall facing the intake collection chamber. An oil filling cap is provided proximal to one end of the engine cover for refilling the oil in case of drain of oil from the engine crank case.

In the conventional engine head covers, the oil filler hole is congested on to the engine head cover and/or placed proximal to one end of the engine cover. Hence in both the conventional assemblies, while refilling the oil in the engine crank case, few of the engine components has to be removed for reaching the oil filler cap. Therefore, each time for refilling the engine, one has to take it to a service station and engine components have to be removed for refilling. Due to this service time and cost increases substantially. Further, the position of the oil filler cap just above the engine head cover in the conventional assemblies leads to oil leakage, due to oil splash at high pressures on oil filler cap due to rotation of cam shafts and gears.

In the conventional engine covers, even though oil filler caps are provided, accessibility of the oil filler caps is poor. This increases the service time, as engine parts which obstruct accessibility of oil filler cap, have to be removed during oil refill into the engine. A frequent problem arises in accessing oil filler cap, if a particular engine is packed in different vehicle layouts (longitudinal or transverse). This may lead to tolling change for cylinder head cover which is a time consuming and cost impulsive work.

In light of the foregoing discussion, there is a need to develop an improved engine head cover to overcome the limitations stated above.

SUMMARY OF THE DISCLOSURE
The limitations 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.

In one non-limiting embodiment of the present disclosure there is provided, an engine head cover assembly typically comprising an oil filling port provisioned at a predetermined location on top surface of the engine head cover. Further, an oil channel is provided in between the oil filling port and an oil discharge port of the engine head cover, wherein the oil channel is supported on top surface of the engine head cover, and is inclined at a predetermined angle with respect to horizontal plane of the engine head cover.

In an embodiment of the present disclosure, the predetermined angle ranges from about 4 degrees to 8 degrees.

In one embodiment of the present disclosure, at least one support member is provisioned at predetermined location on top surface of the engine head cover to support the oil channel.

In one embodiment of the present disclosure, the channel comprises at least one lug at predetermined location.

In one embodiment of the present disclosure, at least one lug is connectable to the engine head cover for holding the channel on the engine head cover.
In one embodiment of the present disclosure, the oil discharge port is connectable to an engine oil filling port for supplying the oil to the engine crank case.

In one embodiment of the present disclosure, at least one sealing member, wherein the sealing member is provided in a connecting junction of the oil discharge port and the engine oil filling port.

In one embodiment of the present disclosure, the sealing members are selected from the group comprising O-rings, gaskets and rubber seals.

In another embodiment of the present disclosure, the provision for the closure is selected from the group comprising screw-thread arrangement and snap-fit arrangement.

In one embodiment of the present disclosure, a plurality of holes are provided in the periphery of the engine head cover, for fastening the engine head cover on the periphery of the engine head.

BREIF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The novel features and characteristic of the disclosure are set forth in the appended claims. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:

Figure 1 illustrates the perspective view of the engine head cover assembly of the present disclosure.

Figure 2 illustrates the front view of the engine head cover assembly of the present disclosure.

Figure 3 illustrates the cross sectional view of the oil channel connected to the engine head cover of the present disclosure.

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 assembly illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION OF THE DISCLOSURE
In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be utilized, and other changes may be made, without departing from the scope of the subject matter presented herein. 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.

To overcome the limitations of the prior arts, the present disclosure provides an engine head cover assembly. The engine head cover assembly mainly comprises an oil channel, oil filling port, oil discharge port and a closure. The head cover is connectable to the engine on top of the cylinder head cover, such that the engine head cover encloses the cylinder head cover. The engine head covers prevents the entry of dust and/or any other foreign particles into the engine, thereby ensuring no repeated cleaning of clogs in the valve mechanism mounted in the cylinder head. Further, the engine head cover improves aesthetic look of the engine, as almost all the parts of the engine are enclosed by the engine head cover. The engine head cover comprises an oil filling port at predetermined location for pouring the oil, and an oil discharge port connectable to engine crank case, for discharging the oil into the engine crank case. Further, an oil channel is provided in between the oil filling port and an oil discharge port of the engine cover. The oil channel is inclined at a predetermined angle on to the engine head cover and supported on the engine head cover by at least one lug which is fastened to a bracket of the engine head cover. The inclination of the oil channel creates a gradient between the oil filling port and the oil discharge port so that the oil poured through the oil filling port will flow smoothly into the crank case, without any back-pressure or stagnation of oil. In the oil filling port provisions are provided for a closure adapted to close the oil filling port to prevent dust or any other foreign particles to enter the oil channel. The oil discharge port of the engine cover is aligned to the inlet port of the crank case so that the oil discharged from the oil channel will enter the engine crank case. Further, at least one support member is provisioned on top surface of the engine head cover to maintain the inclination of the oil channel.

Figure 1 in an exemplary embodiment of the present disclosure which illustrates top perspective view of an engine head cover assembly (100). The engine head cover assembly (100) is provided with a plurality of holes (10) on its periphery for fastening the engine head cover (1) onto the periphery of the engine head. The engine head cover (1) can be fastened by fasteners such as bolts and nuts or screws. Further, at least one oil filling port (3) is provided at predetermined location on top surface of the engine head cover (1) for filling the oil, and at least one oil discharge port (4) is provided at predetermined location on bottom surface of the engine head cover (1) for discharging the oil into the engine crank case. On the engine head cover (1) an oil channel (2) is mounted, which connects oil filling port (3) and an oil discharge port (4). The oil channel (2) is provided with at least one lug (6) at predetermined location for supporting the oil channel on the engine head cover (1). The lugs (6) are fastened onto the bracket (9) which is provided on the engine head cover (1) for supporting the oil channel. In an embodiment of the present disclosure, the cross-section of the oil channel (2) includes, but are not limited to, circular, square, rectangular or any other shapes which suffice the need.

Further, in the oil filling port (3) a provision is provided for adapting a closure (8) to open and close the oil filling port (3). The closure (8) also prevents entry of dust or any other foreign particles into the oil channel (2) thereby the oil circulated to the engine components for lubrication is uncontaminated. In an embodiment of the present disclosure, the provision provided for the closure (8) is selected from a group comprising but not limiting to a screw-thread arrangement, a snap-fit arrangement or any other arrangement to suffice the need. The closure (8) is aligned on the engine head cover (1) such that it is easily accessible, and no engine components have to be removed during engine oil refill thereby reducing service time, and reduces work during engine oil replacement or filling.

Figure 2 in an exemplary embodiment of the present disclosure which illustrates front view of the engine head cover assembly (100). As illustrated in the figure, the oil channel (2) which is mounted onto the engine head cover (1), is inclined at a predetermined angle with respect to the horizontal plane (A-A) of the engine head cover (1). The inclination provides a gradient between the oil filling port (3) and the oil discharge port (4) (shown in figure 3). This gradient facilitates smooth flow of the oil poured into the oil channel (2) through the oil filling port (3) up to the oil discharge port (4). The smooth flow of the oil refers to oil flow without any back pressure or stagnation of oil in the oil channel (2). The inclination of the oil channel (2) depends upon the viscosity of the oil used in the engine and the inclination ranges from about 4 degrees to about 8 degrees with respect to the horizontal plane (A-A) of the engine head cover (1). Further, the inclination of the oil channel (2) is supported by the provision of at least one support member (5) on top of the engine head cover (1). The support member (5) is configured such that it aligns to the boss (11) provided on the engine head cover, and it restricts the movement of the oil filling port (3) and channel (2) towards the engine head cover (1)

Figure 3 is an exemplary embodiment of the present disclosure which illustrates cross-sectional view of the oil channel (2) with engine head cover (1). As shown in the figure 3 the oil discharge port (4) of the engine head cover is provided in bottom surface of the engine head cover (1). The oil discharge port (2) is connected to the engine is aligned, and joined to oil filling port connecting the engine crank case. Hence, when oil is poured in to the oil channel (2) through the oil filling port (3) [FIG. 2], the oil passes through the oil discharge port (4) and enters the engine crank case. At the connecting junction of the oil discharge port (4) and the port connecting the engine crank case, at least one sealing member (7) is provided for sealing the leakage of oil. The oil sealing is required as oil leakages can occur in the engine due to various reasons, one of them being high pressure oil splash because of rotating cam shafts and gears. In an embodiment of the present disclosure, the sealing members (7) are selected from a group comprising but not limiting to O-rings, gaskets and rubber seals or any other member capable of sealing the connecting junction.

Additionally, when oil is splashed due to the rotating cam shaft of the engine, the path of the splashed oil is obstructed by the oil channel (2) which prevents the oil spilling out of it. Also, as the spilled oil passes along the oil channel (2) due to the inclination, the pressure of the splashed oil reduces and returns back to the engine crank case. Hence, there is no loss of oil even when oil is splashed from the engine crank case.

As various changes could be made in the above without departing from the scope of the invention, it is intended that all matter contained in the above description and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.
REFERRAL NUMERALS
Referral numerals Description
100 An engine head cover assembly
1 Engine head cover
2 Oil channel
3 Oil filling port
4 Oil discharge port
5 Support member
6 Lug
7 Sealing members
8 Closure
9 Bracket
10 Holes
11 Boss