Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1982-10-22
1985-04-09
Koczo, Michael
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
123425, F02B 3712
Patent
active
045093318
ABSTRACT:
In a turbocharged internal combustion engine, in order to optimize engine torque output spark timing control and boost pressure control are coordinated in such a manner that spark advance angle is adjusted only when the measured boost pressure equals a predetermined value and is allowed to vary only within a specified range advanced from a reference value derived from an empirical memory table on the basis of engine speed and boost pressure. When engine operating conditions are such that spark advance angle would fall outside of the specified range, spark advance angle is then held at the empirical value and boost pressure is adjusted in order to optimize engine torque. The coordinated control system can also be designed to respond to exhaust gas temperature on a first-priority basis, i.e., when exhaust temperature is sensed to be dangerously high, boost pressure is reduced regardless of other engine conditions.
REFERENCES:
patent: 2670724 (1954-03-01), Reggio
patent: 4178891 (1979-12-01), Latsch et al.
"A Turbocharged Engine with Microprocessor Controlled Boost Pressure," Rydqvist, et al., SAE Technical Paper Series 810060 (1981).
Koczo Michael
Nissan Motor Company Limited
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