Title: Cylinder head units for internal combustion engines

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Claims: I claim:

1. In a unit cylinder head for a diesel engine of the type having a single inlet valve seating and a single exhaust valve seating and adapted to receive, respectively, an inlet valve and an exhaust valve, the improvement comprising:

a. a vertical channel formed on each lateral face of the head for forming a joint with an adjacent similar cylinder head, the vertical channel adapted to be aligned with a vertical channel in the adjacent cylinder head to form the joint, each vertical channel having a semi-cylindrical cross-section,

b. a clamping screw received in the joint, thereby, straddling the two adjacent cylinder heads,

c. two rocker stems to control the valves, one rocker stem for each of the valves,

d. a sealing joint disposed at each lateral face and being compressed between two adjacent cylinder heads, and wherein,

e. the vertical plane joining the axis of the two valve seatings is inclined in relation to the vertical plane passing through the longitudinal axis of the engine,

f. the exhaust manifold is shortened and the inlet manifold is provided with a spiral profile,

g. the lateral faces of the head are formed with openings which are used successively for removing the moulding sand during manufacture, and then for the circulation of water from one cylinder head to another, and

h. one of the manifolds passes between the two rocker stems to open on to an adjacent face of the cylinder head, while the other manifold opens on to the opposite face of the head.

2. The cylinder head of claim 1 wherein the exhaust manifold passes between the two rocker stems to open on to an adjacent face of the cylinder head, while the inlet manifold opens on to the opposite face of the head.

3. The cylinder head of claim 1 wherein the inlet manifold passes between the two rocker stems to open on to an adjacent face of the cylinder head, while the exhaust manifold opens on to the opposite face of the head.

4. A unit cylinder head according to claim 1 in which there is a provision for the clamping of the cylinder head by eight screws four of which straddle two adjacent cylinder heads.

5. The unit cylinder head of claim 1 wherein the head has a rectangular parallelopiped configuration.

Other info:

Inventors: Nickly, Jean (Lyon 3.degree. (Rhone), FR)

Application Number: 238299
Filing Date: 1972-03-27
Publication_date: 1976-04-13
Assignee:
Primary Class(es): 123/193.5 123/41.82R, 123/188.14, 123/193.1
Other Classes:
US Patent Ref:

2561674	Jul, 1951	Rhodes	123/41.
2710602	Jun, 1955	Maybach	123/41.
3117565	Jan, 1964	Botter et al.	123/193.
3159148	Dec, 1964	Nallinger et al.	123/188.

Other Refs: 1,236,242626,9682,017,877525,256619,451

Jun, 1971	UK
May, 1936	DD
Apr, 1970	DT
May, 1955	IT
Apr, 1961	IT

Primary Examiner: Burns, Wendell E.
Assistant Examiner:
Attorney: Weiner; Irving M., Burt; Pamela S.