DESC:FORM 2
The Patent Act 1970
(39 of 1970)
&
The Patent Rules, 2005

COMPLETE SPECIFICATION
(SEE SECTION 10 AND RULE 13)

TITLE OF THE INVENTION

“A CYLINDER HEAD FOR AN ENGINE”

APPLICANT:

Name Nationality Address
Mahindra & Mahindra Limited Indian Mahindra & Mahindra Ltd.,
MRV, Mahindra World City (MWC),
Plot No. 41/1, Anjur Post, Chengalpattu,
Kanchipuram District – 603204 (TN) INDIA

The following specification particularly describes and ascertains the nature of this invention and the manner in which it is to be performed:-

TECHNICAL FIELD
[001] The embodiments herein generally relate to internal combustion engines and more particularly, but not exclusively to a cylinder head having integrated exhaust manifold, a blow by channel and split water jackets in internal combustion engines.

BACKGROUND
[002] Generally, engine ventilation system is used to vent blow by gases from a crankcase of an engine to an intake manifold of the engine and engine cooling system is used to keep the engine running at optimum temperature by extracting the heat produced by the engine. Conventional cylinder head of the engine includes internal channels that are connected with corresponding channels of a cylinder block of the engine to discharge the blow by gases to the intake manifold. Further, aforementioned cylinder head includes a water jacket containing coolant that is used to extract the heat produced therein during the operation of engine. Furthermore, an exhaust manifold is externally mounted to the aforementioned cylinder head by using fasteners to transfer the combustion by products of the engine to an exhaust system of a vehicle. The aforementioned cylinder head occupies more space, increases an overall weight of the engine, increases fuel consumption at full load and lacks quicker engine warm up.
[003] Therefore, there exists a need for a compact cylinder head that obviates the aforementioned drawbacks of the conventional cylinder head.

OBJECTS
[004] The principal object of an embodiment of this invention is to provide a compact cylinder head having integrated exhaust manifold.
[005] Another object of an embodiment of this invention is to provide a cylinder head having split water jackets for cooling exhaust manifold.
[006] Yet, another object of an embodiment of this invention is to provide a cylinder head having a blow by channel to vent blow by gases.
[007] These and other objects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.

BRIEF DESCRIPTION OF DRAWINGS
[008] The embodiments of the invention are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[009] FIG. 1 depicts a top cross sectional view of a cylinder head, according to an embodiment of the invention as disclosed herein;
[0010] FIG. 2 depicts a front cross sectional view of the cylinder head, according to an embodiment of the invention as disclosed herein;
[0011] FIG. 3 depicts a perspective view of an upper coolant casing of the cylinder head, according to an embodiment of the invention as disclosed herein;
[0012] FIG. 4 depicts the perspective view of a lower coolant casing of the cylinder head, according to an embodiment of the invention as disclosed herein;
[0013] FIG. 5 depicts a top view of an exhaust manifold and a blow by channel of the cylinder head, according to an embodiment of the invention as disclosed herein;
[0014] FIG. 6 depicts the perspective view of the upper coolant casing, lower coolant casing and exhaust manifold of the cylinder head, according to an embodiment of the invention as disclosed herein; and
[0015] FIG. 7 depicts a cross sectional view of FIG. 3, according to an embodiment of the invention as disclosed herein.

DETAILED DESCRIPTION
[0016] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0017] The embodiments herein achieve a compact cylinder head having integrated exhaust manifold. Further, embodiments herein achieve a cylinder head having split water jackets for cooling exhaust manifold. Referring now to the drawings, and more particularly to FIGS. 1 through 7, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0018] FIG. 6 depicts the perspective view of the upper coolant casing 102, lower coolant casing 104 and exhaust manifold 106 of the cylinder head 100, according to an embodiment of the invention as disclosed herein. The cylinder head 100 includes an upper coolant casing 102, a lower coolant casing 104, an exhaust manifold 106 and a blow-by channel 108 (as shown in FIG. 1).
[0019] FIG. 3 depicts a perspective view of an upper coolant casing 102 of the cylinder head 100, according to an embodiment of the invention as disclosed herein. In an embodiment, the upper coolant casing 102 includes a plurality of inlet channels 102a (as shown in FIG. 7), a plurality of first outlet channels 102b, an opening 102c and a second outlet channel 102d. In an embodiment, each of the inlet channels 102a and each of the first outlet channels 102b of the upper coolant casing 102 are provided in fluid communication with a cylinder block (not shown) of an engine (not shown). In an embodiment, the opening 102c of the upper coolant casing 102 is used to receive a body 108a of the blow by channel 108. Further, in an embodiment, the second outlet channels 102d of the upper coolant casing 102 is provided in fluid communication with at least one of a cabin heater (not shown) and a de-gas system (not shown). Furthermore, in an embodiment, the upper coolant casing 102 is used to cool exhaust manifold 106.
[0020] FIG. 4 depicts the perspective view of a lower coolant casing 104 of the cylinder head 100, according to an embodiment of the invention as disclosed herein. In an embodiment, the lower coolant casing 104 includes a plurality of inlet channels 104a, a first opening 104b, a second opening 104c, a third opening (not shown), a first outlet channel 104d and a second outlet channel 104e. In an embodiment, each of the inlet channels 104a of the lower coolant casing 104 is provided in fluid communication with the cylinder block (not shown) of the engine (not shown). In an embodiment, the first opening 104b of the lower coolant casing 104 is used to receive the body 108a of the blow by channel 108. In an embodiment, the second opening 104c of the lower coolant casing 104 is used to receive an outlet runner 106b of the exhaust manifold 106 (as shown in FIG. 6). In an embodiment, the third opening (not shown) of the lower coolant casing 104 is used to avoid coolant stagnation. In an embodiment, the first outlet channel 104d of the lower coolant casing 104 is provided in fluid communication with at least one of the cabin heater (not shown) and the de-gas system (not shown). In an embodiment, the second outlet channel 104e of the lower coolant casing 104 is provided in fluid communication with a turbocharger (not shown). Further, in an embodiment, the lower coolant casing 104 is spaced away from the upper coolant casing 102. Furthermore, in an embodiment, the lower coolant casing 104 is used to cool exhaust manifold 106.
[0021] FIG. 5 depicts a top view of an exhaust manifold 106 and a blow by channel 108 of the cylinder head 100, according to an embodiment of the invention as disclosed herein and FIG. 2 depicts a front cross sectional view of a cylinder head 100, according to an embodiment of the invention as disclosed herein. The exhaust manifold 106 is used to transfer the combustion by products of the engine (not shown) to an exhaust system (not shown). In an embodiment, the exhaust manifold 106 is configured to be integrated with cylinder head 100. In an embodiment, the exhaust manifold 106 includes a plurality of inlet runners 106a and a plurality of outlet runners 106b. Each of the inlet runners 106a of the exhaust manifold 106 is connected to each of exhaust ports (not shown) of the cylinder head 100. The outlet runner 106b of the exhaust manifold 106 is connected to an exhaust down pipe (not shown) of the exhaust system (not shown). Further, in an embodiment, the exhaust manifold 106 is disposed between the upper coolant casing 102 and the lower coolant casing 104.
[0022] In an embodiment, the blow by channel 108 of the cylinder head 100 is used to vent blow by gases of the engine (not shown) to an intake manifold. In an embodiment, the blow-by channel 108 includes a body 108a, a plurality of legs 108b and a plurality of channel elements 108c. Each of the legs 108b of the blow by channel 108 is configured to extend from the body 108a. Each of the channel elements 108c of the blow by channel 108 is configured to extend from each of the legs 108b. In an embodiment, the body 108a of the blow by channel 108 is provided in fluid communication with a breather system (not shown). In an embodiment, each of the channel elements 108c of the blow by channel 108 is provided in fluid communication with the cylinder block (not shown) of the engine (not shown). Further, in an embodiment, the body 108a of the blow by channel 108 substantially defines a passage of blow by gases between lower coolant casing 104 and upper coolant casing 102. Furthermore, in an embodiment, the body 108a of the blow by channel 108 is located between two inlet runners 106a of the exhaust manifold 106.
[0023] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

CLAIMS
We claim,
1. A cylinder head for an engine, said cylinder head comprising:
an upper coolant casing, said upper coolant casing having a plurality of inlet channels and a plurality of first outlet channels provided in fluid communication with a cylinder block of said engine;
a lower coolant casing, said lower coolant casing having a plurality of inlet channels provided in fluid communication with said cylinder block of said engine;
an exhaust manifold configured to be integrated with said cylinder head, said exhaust manifold is disposed between said upper coolant casing and said lower coolant casing; and
a blow by channel, said blow by channel having a body, a plurality of legs extending from said body and a plurality of channel elements extending from corresponding said legs,
wherein
said upper coolant casing and said lower coolant casing are adapted to cool said exhaust manifold of said cylinder head; and
said blow by channel is adapted to vent blow by gases of said engine.
2. The cylinder head for the engine as claimed in claim 1, wherein said upper coolant casing defines an opening adapted to receive said body of said blow by channel.
3. The cylinder head for the engine as claimed in claim 2, wherein said upper coolant casing having a second outlet channel adapted to be provided in fluid communication with at least one of a cabin heater and a de-gas system.
4. The cylinder head for the engine as claimed in claim 1, wherein said lower coolant casing of said cylinder head is substantially spaced away from said upper coolant casing.
5. The cylinder head for the engine as claimed in claim 1, wherein said lower coolant casing defines a first opening adapted to receive said body of said blow by channel.
6. The cylinder head for the engine as claimed in claim 1, wherein said lower coolant casing defines a second opening adapted to receive an outlet runner of said exhaust manifold.
7. The cylinder head for the engine as claimed in claim 6, wherein said lower coolant casing defines a third opening adapted to avoid coolant stagnation.
8. The cylinder head for the engine as claimed in claim 6, wherein said lower coolant casing having a first outlet channel adapted to be provided in fluid communication with at least one of a cabin heater and a de-gas system.
9. The cylinder head for the engine as claimed in claim 6, wherein said lower coolant casing having a second outlet channel adapted to be provided in fluid communication with a turbocharger.
10. The cylinder head for the engine as claimed in claim 1, wherein each of said channel elements of said blow by channel is adapted to be provided in fluid communication with said cylinder block of said engine.
11. The cylinder head for the engine as claimed in claim 1, wherein said body of said blow by channel is substantially located between two inlet runners of said exhaust manifold.
12. The cylinder head for the engine as claimed in claim 1, wherein said body of said blow by channel substantially defines a passage of blow by gases between said lower coolant casing and said upper coolant casing.
13. The cylinder head for the engine as claimed in claim 12, wherein said body of said blow by channel is adapted to be provided in fluid communication with a breather system.
14. An engine comprising:
a cylinder block; and
a cylinder head, said cylinder head comprising:
an upper coolant casing, said upper coolant casing having a plurality of inlet channels and a plurality of first outlet channels provided in fluid communication with said cylinder block of said engine; a lower coolant casing, said lower coolant casing having a plurality of inlet channels provided in fluid communication with said cylinder block of said engine; an exhaust manifold configured to be integrated with said cylinder head, said exhaust manifold is disposed between said upper coolant casing and said lower coolant casing; a blow by channel, said blow by channel having a body, a plurality of legs extending from said body and a plurality of channel elements extending from corresponding said legs,
wherein
said upper coolant casing and said lower coolant casing are adapted to cool said exhaust manifold of said cylinder head; and
said blow by channel is adapted to vent blow by gases of said engine.
15. The engine as claimed in claim 14, wherein said upper coolant casing of said cylinder head defines an opening adapted to receive said body of said blow by channel of said cylinder head.
16. The engine as claimed in claim 15, wherein said upper coolant casing of said cylinder head having a second outlet channel adapted to be provided in fluid communication with at least one of a cabin heater and a de-gas system.
17. The engine as claimed in claim 14, wherein said lower coolant casing of said cylinder head is substantially spaced away from said upper coolant casing of said cylinder head.
18. The engine as claimed in claim 14, wherein said lower coolant casing of said cylinder head defines a first opening adapted to receive said body of said blow by channel of said cylinder head.
19. The engine as claimed in claim 14, wherein said lower coolant casing of said cylinder head defines a second opening adapted to receive an outlet runner of said exhaust manifold of said cylinder head.
20. The engine as claimed in claim 19, wherein said lower coolant casing of said cylinder head defines a third opening adapted to avoid coolant stagnation.
21. The engine as claimed in claim 19, wherein said lower coolant casing of said cylinder head having a first outlet channel adapted to be provided in fluid communication with at least one of a cabin heater and a de-gas system.
22. The engine as claimed in claim 19, wherein said lower coolant casing of said cylinder head having a second outlet channel adapted to be provided in fluid communication with a turbocharger.
23. The engine as claimed in claim 14, wherein each of said channel elements of said blow by channel of said cylinder head is adapted to be provided in fluid communication with said cylinder block of said engine.
24. The engine as claimed in claim 14, wherein said body of said blow by channel of said cylinder head is substantially located between two inlet runners of said exhaust manifold.
25. The engine as claimed in claim 14, wherein said body of said blow by channel of said cylinder head substantially defines a passage of blow by gases between said lower coolant casing and said upper coolant casing of said cylinder head.
26. The engine as claimed in claim 25, wherein said body of said blow by channel of said cylinder head is adapted to be provided in fluid communication with a breather system.

Dated this 29th February,2016 Signature:
Dr. Kalyan Chakravarthy

ABSTRACT
A cylinder head for an engine includes an upper coolant casing, a lower coolant casing, an exhaust manifold and a blow by channel. The exhaust manifold is configured to be integrated with the cylinder head of the engine. The upper coolant casing and lower coolant casing is used to cool the exhaust manifold. The blow by channel is used to vent the blow by gases developed in the engine to an intake manifold.
,CLAIMS:CLAIMS
We claim,
1. A cylinder head for an engine, said cylinder head comprising:
an upper coolant casing, said upper coolant casing having a plurality of inlet channels and a plurality of first outlet channels provided in fluid communication with a cylinder block of said engine;
a lower coolant casing, said lower coolant casing having a plurality of inlet channels provided in fluid communication with said cylinder block of said engine;
an exhaust manifold configured to be integrated with said cylinder head, said exhaust manifold is disposed between said upper coolant casing and said lower coolant casing; and
a blow by channel, said blow by channel having a body, a plurality of legs extending from said body and a plurality of channel elements extending from corresponding said legs,
wherein
said upper coolant casing and said lower coolant casing are adapted to cool said exhaust manifold of said cylinder head; and
said blow by channel is adapted to vent blow by gases of said engine.
2. The cylinder head for the engine as claimed in claim 1, wherein said upper coolant casing defines an opening adapted to receive said body of said blow by channel.
3. The cylinder head for the engine as claimed in claim 2, wherein said upper coolant casing having a second outlet channel adapted to be provided in fluid communication with at least one of a cabin heater and a de-gas system.
4. The cylinder head for the engine as claimed in claim 1, wherein said lower coolant casing of said cylinder head is substantially spaced away from said upper coolant casing.
5. The cylinder head for the engine as claimed in claim 1, wherein said lower coolant casing defines a first opening adapted to receive said body of said blow by channel.
6. The cylinder head for the engine as claimed in claim 1, wherein said lower coolant casing defines a second opening adapted to receive an outlet runner of said exhaust manifold.
7. The cylinder head for the engine as claimed in claim 6, wherein said lower coolant casing defines a third opening adapted to avoid coolant stagnation.
8. The cylinder head for the engine as claimed in claim 6, wherein said lower coolant casing having a first outlet channel adapted to be provided in fluid communication with at least one of a cabin heater and a de-gas system.
9. The cylinder head for the engine as claimed in claim 6, wherein said lower coolant casing having a second outlet channel adapted to be provided in fluid communication with a turbocharger.
10. The cylinder head for the engine as claimed in claim 1, wherein each of said channel elements of said blow by channel is adapted to be provided in fluid communication with said cylinder block of said engine.
11. The cylinder head for the engine as claimed in claim 1, wherein said body of said blow by channel is substantially located between two inlet runners of said exhaust manifold.
12. The cylinder head for the engine as claimed in claim 1, wherein said body of said blow by channel substantially defines a passage of blow by gases between said lower coolant casing and said upper coolant casing.
13. The cylinder head for the engine as claimed in claim 12, wherein said body of said blow by channel is adapted to be provided in fluid communication with a breather system.
14. An engine comprising:
a cylinder block; and
a cylinder head, said cylinder head comprising:
an upper coolant casing, said upper coolant casing having a plurality of inlet channels and a plurality of first outlet channels provided in fluid communication with said cylinder block of said engine; a lower coolant casing, said lower coolant casing having a plurality of inlet channels provided in fluid communication with said cylinder block of said engine; an exhaust manifold configured to be integrated with said cylinder head, said exhaust manifold is disposed between said upper coolant casing and said lower coolant casing; a blow by channel, said blow by channel having a body, a plurality of legs extending from said body and a plurality of channel elements extending from corresponding said legs,
wherein
said upper coolant casing and said lower coolant casing are adapted to cool said exhaust manifold of said cylinder head; and
said blow by channel is adapted to vent blow by gases of said engine.
15. The engine as claimed in claim 14, wherein said upper coolant casing of said cylinder head defines an opening adapted to receive said body of said blow by channel of said cylinder head.
16. The engine as claimed in claim 15, wherein said upper coolant casing of said cylinder head having a second outlet channel adapted to be provided in fluid communication with at least one of a cabin heater and a de-gas system.
17. The engine as claimed in claim 14, wherein said lower coolant casing of said cylinder head is substantially spaced away from said upper coolant casing of said cylinder head.
18. The engine as claimed in claim 14, wherein said lower coolant casing of said cylinder head defines a first opening adapted to receive said body of said blow by channel of said cylinder head.
19. The engine as claimed in claim 14, wherein said lower coolant casing of said cylinder head defines a second opening adapted to receive an outlet runner of said exhaust manifold of said cylinder head.
20. The engine as claimed in claim 19, wherein said lower coolant casing of said cylinder head defines a third opening adapted to avoid coolant stagnation.
21. The engine as claimed in claim 19, wherein said lower coolant casing of said cylinder head having a first outlet channel adapted to be provided in fluid communication with at least one of a cabin heater and a de-gas system.
22. The engine as claimed in claim 19, wherein said lower coolant casing of said cylinder head having a second outlet channel adapted to be provided in fluid communication with a turbocharger.
23. The engine as claimed in claim 14, wherein each of said channel elements of said blow by channel of said cylinder head is adapted to be provided in fluid communication with said cylinder block of said engine.
24. The engine as claimed in claim 14, wherein said body of said blow by channel of said cylinder head is substantially located between two inlet runners of said exhaust manifold.
25. The engine as claimed in claim 14, wherein said body of said blow by channel of said cylinder head substantially defines a passage of blow by gases between said lower coolant casing and said upper coolant casing of said cylinder head.
26. The engine as claimed in claim 25, wherein said body of said blow by channel of said cylinder head is adapted to be provided in fluid communication with a breather system.