Improvements relating to methods of operating spark or glow plug ignited internal combustion engines and to internal combustion engines so operated

摘要

1,143,058. Fuel injection I. C. engines. DAIMLER-BENZ A. G. Sept. 14, 1967 [Sept. 15, 1966], No. 42010/67. Heading F1B. In a method of injecting fuel into a spark or glow plug ignited I. C. engine, in which the commencement of injection is advanced with an increasing quantity of injected fuel, the fuel initially impacts the piston 2, Fig. 1 at a point remote from the ignition source 7 and the region of initial impact moves across the piston head towards the ignition source as the piston rises, the fuel flowing across the piston head in a film-like manner. The position of the impact point 9 of the last fuel injected remains the same for all operating conditions so that a rich ignitable mixture is always present in the region of the ignition source 7. The invention is also applicable to an engine operating according to method. In another embodiment the injection nozzle (6), Fig. 2 (not shown) is situated in the marginal region of a cylindrical combustion chamber (4SP1/SP) remote from the piston centre. The combustion chamber is in the cylinder head beneath a valve (10) and the ignition plug (7) is situated in this marginal region opposite to the injection nozzle. In both embodiments the combustion air may swirl about the cylinder axis.