Abstract: The invention relates to the arrangement of a balancing device in a casing, for a reciprocating piston engine, which permits the evacuation of the lubricating oil. The device comprises two balancing shafts (7, 8) disposed in a main part (19) of the casing (11) and each fastened to one or two intermeshing pinions (21, 22) situated in an auxiliary part of the casing. A bottom oil passage (25a) provided between the two parts of the casing enables the pinions, acting as a draining pump, to fully drain the casing.

Abstract: The cylinder head comprises combustion chambers (3) each of which is associated at least one admission passageway (4, 5) into which opens a fuel injector (25) and which is closable, in the region of the corresponding chamber (3), by a stem-type valve (7, 8), a cylinder head cap (24) covering the elements controlling the valves, the injectors (25) being fed with fuel through pipes (28). According to the invention, the injectors (25) each open into an admission passageway (4) slightly upstream of the associated valve (7), each injector (25) extends in a sealed manner through the cylinder head cap (24) and is maintained on the latter by the fuel feed pipe (28) which is fixed to the cylinder head cap (24), and an annular spacer member (29) which is slightly flexible and not very conductive of heat is inserted between the cylinder head (1) and the cylinder head cap coaxially with each injector (25).

Abstract: The device comprises a fixed body, a screw cooperating with a nut, and springs. The nut is disposed in the body between two abutments. A releasable clutch device is interposed between the nut and one of the abutments. The springs are interposed between the nut and the other abutment. A pawl mechanism is provided between the body and the nut.The device has an interesting application in a belt tensioner.