Internal-combustion engines – Charge forming device – Supercharger
Patent
1990-07-26
1992-05-26
Koczo, Michael
Internal-combustion engines
Charge forming device
Supercharger
123564, 417310, 4182012, F02B 3336
Patent
active
051157888
ABSTRACT:
A supercharging apparatus for an internal combustion engine includes a screw type supercharger having an inlet opening and an outlet opening. The supercharger is adapted to compress intake air for the engine in compression chambers between the openings when an electromagnetic clutch engages the supercharger with the crankshaft of the engine. The supercharging apparatus includes an intake air bypass passage for allowing the intake air to bypass the supercharger and a bypass control valve for closing the passage. The supercharger has a communication passage for allowing the two compression chambers to intercommunicate for relieving the compression chambers of the compression pressure therein. A controller allows the communication passage to relieve the compression pressure during the disengagement of the electromagnetic clutch and causes the bypass control valve to close the intake air bypass passage in association with the relief of the compression pressure by the communication passage.
REFERENCES:
patent: 2519913 (1950-08-01), Lysholm
patent: 4656992 (1987-04-01), Oonaka et al.
patent: 4826412 (1989-05-01), Kubo et al.
patent: 4991562 (1991-02-01), Chujo
Fujimoto Hidefumi
Iwata Noriyuki
Sasaki Junsou
Koczo Michael
Mazda Motor Corporation
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