Societe D'etudes De Machines Thermiques-s.e.m.t.

Jean-Pierre Pollet

A valve housing for an internal combustion engine having more than one intake or exhaust valve per cylinder includes complementary upper 14 and lower 16 members, with a transverse junction plane 17 intersecting a longitudinal partition 10 which divides an annular cavity 9 between a central valve bushing and a circumferential wall of the housing into separate coolant supply and return sections 9a and 9b, respectively. An intermediate element 17 is interposed between said members and is provided with openings 19, 20 smaller angular extents than the corresponding coolant sections to provide for proper circulation of coolant between the portions of a given section (9a or 9b) of cavity 9 while permitting different angular relations between said members.

Fluid-cooled valve housing for an engine having two exhaust valves per

A support device for the set of rockers of an internal combustion engine, the device comprising a forked rocker for the operation of two exhaust valves and one rocker with two arms for the operation of two inlet valves. The shaft of the exhaust rocker is secured to the support block by separate individual stud bolts in order to be removable without removing the inlet rocker.

Support device for the set of valve rockers of an internal combustion

The invention provides a mushroom valve housing comprising a cage (1) and a guide (2), Cage (1) comprises legs (3, 4, 5, 6) supporting a valve seat (7) containing an annular space (8). Guide (2) has an annular cavity (9) with two sections (9a, 9b) communicating with space (8) by passages (11 to 14). One passage (12) among the two passages (11, 12) connected to a same section (9b) freely opens into this section whereas the other passage (11) communicates directly with the other section (9a), the passages (11, 13) of two diametrically opposite legs (3, 5) communicating with a same section (9a).

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Arnouville les Gonesse, France

Jean-Pierre Pollet