Abstract: The invention relates to an internal combustion engine injection pump provided with a regulator unit comprising a mobile valving element on which there act an actuator, elastic means, and the back-pressure of the fuel discharged by the pump on delivery interruption, in order to improve the response characteristics of the regulator unit.

Abstract: A hydraulic and pneumatic suspension system for motor vehicle is disclosed, the improvement consisting in that each stay tube of the system is connected to a liquid-level-adjuster of its own and is also connected to a load-shift adjuster: the latter device is capable of controlling, according to a preselected value, the ratio of distribution of the load between the wheels of the front axles and those of the rear axle. These interconnections are such as to provide an improved control of the rolling and the pitching movements of the vehicle body while concurrently providing a better shock dampening in the case in which one wheel only is engaged by an isolated obstacle.

Abstract: There is disclosed an electronic indirect petrol injection system for Otto cycle engines, which comprises at least one air intake duct, one electroinjector for each engine cylinder, a feed circuit to feed the petrol to the electroinjectors under pressure, and an electronic assembly for controlling the injection timing during the cylinder intake stage and the duration of injection. The system also comprises a throttle valve located in the engine intake duct, a measuring element for the air flow rate disposed upstream of the throttle valve and a petrol, gas or gasoline pressure modulator arranged in the petrol feed circuit for the electroinjectors.