Method for controlling engine timing

Details Method for controlling engine timing Method for controlling engine timing

1995-03-31

1996-10-15

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

F02P 506

Patent

active

055643906

ABSTRACT:
A method for an internal combustion engine controls engine timing as a function of engine load, speed and air intake temperature to reduce engine NOx emissions and/or engine fuel consumption. The method is particularly beneficial to a large, aftercooled turbocharged engine which utilizes a cooling system having a liquid cooled, separate circuit aftercooler (SCAC) to cool the pressurized intake air. By routing the aftercooler circuit and engine coolant circuit through a common or single core radiator, the aftercooler cooling circuit temperature and associated engine air intake temperature are reduced to further reduce engine NOx emissions and/or engine fuel consumption.

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