Abstract: An injector apparatus for an internal combustion engine and suitable for injecting two different fuels, namely a "pilot injection" liquid fuel and a "main injection" liquid or gaseous fuel comprising a low-pressure pump (1B) for pilot injection fuel feed, a high-pressure pump (1A) of the injection pump type, two fuel injectors, and a metering pump (30) selectively connecting the low-pressure pump, the high-pressure pump, and the two fuel injectors. The metering pump (30) includes a transfer piston (2) and two abutments (3, 4) which are independently adjustable so as to vary the relative importance of pilot injection and of main injection and also vary the extent to which the two injection stages overlap.

Abstract: A device for internal combustion engines particularly automobile engines, which varies the opening duration and the lift of the timing valves. This variation results from the utilization of all or part of the profile of an alternating cam of which the motion about an axis is provided by rotating main cams which contact rollers carried on the alternating cam, and is transmitted to a roller in contact with the lever which then actuates the valve. The timing is varied by adjusting the position of the roller by means of support arms by which the roller is displaced with respect to the alternating cam and lever.