PERFECCIONAMIENTOS INTRODUCIDOS EN MOTORES DE COMBUSTION INTERNA.

摘要

An internal combustion engine has a main combustion chamber and an auxiliary combustion chamber which are in communication through a passage called a torch nozzle. The spark plug in the auxiliary chamber ignites the fuel-air mixture therein producing a torch flame which passes through the torch nozzle to ignite the mixture supplied to the main combustion chamber. The mixture supplied to the auxiliary chamber is richer than that supplied to the main chamber and to enhance the combustibility of the rich mixture, particularly upon cold starting of the engine, the present invention provides an auxiliary intake passage arranged in adjacent relationship with an exhaust pipe of the engine with a boundary wall therebetween composed of a material having a low heat capacity so that the rich mixture flowing to the auxiliary chamber is rapidly heated by the hot exhaust gases.