Internal-combustion engines – Charge forming device – Supercharger
Patent
1979-10-29
1982-09-21
Koczo, Jr., Michael
Internal-combustion engines
Charge forming device
Supercharger
418138, F02B 3336
Patent
active
043501354
ABSTRACT:
A supercharging system for an internal combustion engine, consisting of a positive displacement air pump mechanically driven by the engine, and an electromagnetic clutch activated during high torque demand operating conditions. The system produces a high torque output in a high torque demand range from a relatively small displacement engine, with economy operation during normal engine operating conditions. A flow modulation control system provides a smooth transition from natural aspiration to supercharged operating conditions and includes a sensing of the pressure drop across the throttle plate and modulation of the supercharger air flow into the engine intake in accordance with the sensed pressure differential. The flow modulation also enables high efficiency supercharging with the engine operating under partial pressure supercharging as required in ascending a grade. The air pump design is a specially configured vane pump in which the vanes are dynamically biased in an axial direction by forces generated during rotation of the air pump vanes enabling the use of a relatively simplified low cost bearing arrangement for the vanes.
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Casey Gary L.
Eddy William C.
Harvey Bruce J.
Hebert Kenneth A.
Haas, Jr. G. P.
Ignatowski J. R.
Koczo, Jr. Michael
The Bendix Corporation
Wells R. C.
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