Abstract: Disclosed herein is a plant that supplies a diesel oil-gas fuel mixture to diesel cycle engines and comprises: a device for interrupting the travel of the lever that controls the injection pump and is connected to the accelerator; and a mixer group placed along the manifold for the induction of air to the cylinders, comprising two separate parallel pipes, the first of which provided with a first throttle valve movable between two extreme positions, namely a position for opening the air passage when the engine is running on diesel oil and a position for closing the air passage when the engine is running on a mixture of diesel oil and gas, and the second of which provided with a Venturi tube and with a second throttle valve for blocking the air passage, movable continuously and connected to the accelerator, the said Venturi tube being connected to a pipe for the supply of the gas at low pressure; the said pipes being jointly provided with an air passage area at least identical to that required for maximum engin

Abstract: Improved apparatus for cleaning vehicles includes three water lines each having a pump and a pressure regulator therein. A liquid container is connected to each line upstream of the pump, for adding liquid to the line, by a dosage metering device and a shut-off valve. Two containers are for liquid cleaners, acid and alkaline, respectively, while the third container is for water-repellant rinsing liquid. The two cleaner lines are alternatively connectable downstream of the pumps therein to a compressed air spray nozzle, while the rinsing liquid line is connectable to a separate rinsing nozzle that is also usable for drying by connection to the compressed air source.