| 摘要 |
The invention is related to mechanical engineering, in particular, to engine building. The objects of the invention are higher specific power of the engine, fuel economy and lower content of combustion products in exhaust gases. The objects of the invention are attained by a provision of a direct-injection, spark-ignition, pre-combustion chamber engine wherein the pre-combustion chamber (5) is additionally connected with the cylinder volume (6) through an ignition channel (8) passing to the cylinder volume (6) near the wall of the cylinder (1), in the area above the displacing surface (17) of the piston bottom (18), and having a conical expansion near the cross-section (16) of the outlet to the volume (6) of the cylinder (1). Further, the objects of the invention are attained by a provision of a direct-injection, spark-ignition, pre-combustion chamber engine wherein the spraying hole (19) of the fuel-injection nozzle (10) is arranged in the volume (6) of the cylinder near the outlet cross-section (16) of the ignition channel (8), the axis (20) of the spraying hole being directed to the main combustion chamber (4) tangentially to a circumference (21), the centre of which is located on the central axis (22) of the main combustion chamber (4), and the radius of the circumference (21) is equal to 2/3 radius of rounding of the side wall (23) of the main combustion chamber (4) implemented as a body of revolution in the form of a recess in the piston (3), the fuel-injection nozzle (10) being made so that a jet of atomised fuel from the spraying hole (19) flows to the main combustion chamber (4) in the direction opposite to direction of rotation of air flow coming from the inlet channel (13). The objects of the invention are also attained by a provision of a direct-injection, spark-ignition, pre-combustion chamber engine wherein the axis (24) of the connecting channel (7) is directed to the main combustion chamber (4) tangentially to the circumference (21), the centre of which is located on the central axis (22) of the main combustion chamber (4), and the radius of the circumference (21) is equal to 2/3 radius of rounding of the side wall (23) of the main combustion chamber (4) so that a gas jet flows through the connection channel (7) from the pre-combustion chamber (5) to the main combustion chamber (4) in the direction of rotation of the air flow coming from the inlet channel (13). |
