Supercharging pressure control system for engine with turbocharg

Details Supercharging pressure control system for engine with turbocharg Supercharging pressure control system for engine with turbocharg

1990-08-30

1992-08-25

Koczo, Michael

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

60602, F02B 3712

Patent

active

051408171

ABSTRACT:
An engine is provided with primary and secondary turbochargers. In a small intake air mass range, only the primary turbocharger is caused to operate, and in a large intake air mass range, both the primary and secondary turbochargers are caused to operate. A waste gate valve and an exhaust bypass valve are controlled so that the supercharging pressure approximates to a target supercharging pressure. The target supercharging pressure in the large intake air mass range is set lower than that in the small intake air mass range.

REFERENCES:
patent: 4254625 (1981-03-01), Bergstedt et al.
patent: 4459809 (1984-07-01), Tadokoro et al.
patent: 4793140 (1988-12-01), Esch
patent: 5005359 (1991-04-01), Tashima et al.

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