Internal-combustion engines – Charge forming device – Supercharger
Patent
1991-01-30
1992-06-09
Koczo, Jr., Michael
Internal-combustion engines
Charge forming device
Supercharger
123564, F02B 2904, F02B 3300
Patent
active
051197952
ABSTRACT:
An intake system comprises an intake passage provided, in order from an upstream side of the intake passage, with a throttle valve, a mechanical compressor supercharger and an inter-cooler for delivering supercharged air discharged by the supercharger into cylinders of an internal combustion engine. The intake passage has a supercharger bypass passage for allowing an intake air flow to bypass the supercharger, and an inter-cooler bypass passage for allowing a supercharged air flow to bypass the inter-cooler. Pneumatic valves, disposed, respectively, in the supercharger and inter-cooler bypasses passages, are controlled to open both the bypass passages when the internal combustion engine operates in a range of lower loads, to open at least the supercharger bypass passage when the internal combustion engine operates in a range of medium loads, and to close both the bypass passages when the internal combustion engine operates in a range of higher loads.
REFERENCES:
patent: 3712282 (1973-01-01), Isley
patent: 4513729 (1985-04-01), Udd
patent: 5022375 (1991-06-01), Goto et al.
Goto Tsuyoshi
Hatamura Kouichi
Nakagawa Yoshihiro
Koczo, Jr. Michael
Mazda Motor Corporation
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