Internal-combustion engines – Four-cycle – Crankcase compression of air or combustible mixture to be...
Patent
1997-04-23
1998-12-08
Okonsky, David A.
Internal-combustion engines
Four-cycle
Crankcase compression of air or combustible mixture to be...
123311, F02B 7502
Patent
active
058456180
ABSTRACT:
A number of embodiments of vehicles such as scooters that are powered a compact, high performance, four-cycle crankcase compression supercharged internal combustion engine. The engine is provided with two throttle valves, one on the intake side and one on the compressor side, that are operated simultaneously and in the same direction under at least some conditions so as to improve throttle response. In addition, an arrangement is provided for limiting the maximum pressure in the compressor side under low throttle and low load conditions. This improves performance and ensures against seal degradation in the lubricating system.
REFERENCES:
patent: 1477363 (1923-12-01), Kessler
patent: 1725418 (1929-08-01), Prindle
patent: 5230314 (1993-07-01), Kawahara et al.
patent: 5377634 (1995-01-01), Taue
patent: 5678525 (1997-10-01), Taue
patent: 5738051 (1998-04-01), Binversie et al.
Kuranishi Masahisa
Taue Jun
Okonsky David A.
Yamaha Hatsudoki Kabushiki Kaisha
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