DEVICE FOR INJECTING NATURAL GAS INTO A CYLINDER COMBUSTION CHAMBER

摘要

The invention concerns a device for injecting natural gas into a combustion chamber (12) of a motor vehicle internal combustion engine, comprising an intermediate chamber (26) for storing natural gas and which equipped with a natural gas injector (30) supplied with natural gas by an upstream supply conduit (32), and wherein the intermediate chamber (26) communicates with the engine combustion chamber (12) via an injection valve (28) controlling natural gas injection into the combustion chamber (12). The invention is characterised in that it comprises a complementary chamber (38) containing natural gas which is connected to the intermediate chamber (26) by a connecting channel (40) provided with a valve (42) which is opened to increase the amount of natural gas stored in the intermediate chamber (26) before it is injected into the combustion chamber (12).