TH34564A - Internal combustion engine with pre-compression in the crankshaft chamber - Google Patents

Abstract

DC60 (27/05/40) [Objective] Abnormal combustion during low-load operation will be prevented, fuel consumption will be improved, and exhaust gases will be cleaned by passing rich and lean mixtures through scavenging channels to form various thin layers in the combustion chamber, and then igniting the rich mixture by the spark plug in a two-stroke internal combustion engine with pre-compression ignition in the crankcase. [Process to Achieve the Object] In a two-stroke internal combustion engine with pre-compression ignition in the crankcase,1 the protruding line of the rich mixture intake channel12 is provided to contact the rotational axis of the large end8 of the connecting rod7, and the rich mixture intake channel12 is provided at a position where the direction of mixture flow corresponds to the rotational direction of the large end8 of the connecting rod7, and the rich mixture scavenging channel16 is formed on the protruding line of Rich-Mix Intake Channel 12 [Selected Figure] Figure 2 [Purpose] Abnormal combustion during low-load operation is prevented, fuel consumption is improved, and exhaust gases are cleaned by passing rich and lean mixtures through scavenging channels to form various thin layers in the combustion chamber, and then igniting the rich mixture by the spark plug in a two-stroke internal combustion engine with pre-compression ignition in the crankcase. [(Process to Achieve the Goal] In a two-stroke internal combustion engine with pre-compression ignition in the crankcase,1 the protruding line of the rich-mixture intake channel 12 is provided to contact the rotational nucleus of the large end 8 of the connecting rod 7, and the rich-mixture intake channel 12 is provided at a position where the direction of mixture flow corresponds to the rotational direction of the large end 8 of the connecting rod 7, and the rich-mixture scavenging channel 16 is formed on the protruding line of the rich-mixture intake channel 12 [Selected Figure] Figure 2

Claims (4)

1. In a two-stroke internal combustion engine with pre-ignition in the crankcase, intake air is drawn into the crankcase during the compression stroke of the piston's combustion chamber. The intake air is compressed during the downstroke and drawn into the combustion chamber through scanning channels using this compression pressure. A rich mixture intake channel is provided for introducing the mixture into the crankcase, and a lean mixture/air intake channel is provided for introducing the lean mixture or air into the crankcase. The path connecting the rich mixture intake channel and the fuel feeder is positioned adjacent to the outer edge of the crankcase. The rich mixture intake channel is positioned so that the flow of the rich mixture is directed from the fuel feeder into the crankcase in a direction consistent with the direction of the outer edge of the crankcase. The rich mixture scanning channel is formed on the extension of the edge of the rich mixture intake channel. 2. A two-stroke internal combustion engine with pre-compression ignition in the crankcase, which is entitled to claim under claim 1, where the air introduced into the intake port is delivered to the intake port of the said lean/air mixture. 3. A two-stroke internal combustion engine with pre-compression ignition in the crankcase, which is entitled under Reservation 1 or Reservation 2, where the intake port of the scavenging channel for the rich mixture is provided as far as possible from the exhaust outlet, and the intake ports of the scavenging channel are provided on both sides of the line connecting to the exhaust outlet and the intake port of the scavenging channel for the rich mixture on the cylinder wall. 4. A two-stroke internally controlled engine with compression pre-ignition in the crankcase, as claimed under claim 13, where the large end of the outer edge of the crankshaft cheek is provided to contact the protruding line (Clause 4, image).