Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1994-09-02
1996-01-23
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel injection system
123446, F02M 4100
Patent
active
054858208
ABSTRACT:
A system for controlling fuel injection in a diesel engine that includes a hydraulically-actuated, electronically-controlled unit injector (HEUI) fuel system. The injection rate/pressure characteristic of a HEUI fuel system is a function of oil supply (rail) pressure, which is independent of engine speed and load. However, transient operating conditions necessitate rapid changes in rail pressure and the prior art system does not always respond to these rapid changes fast enough. The enhanced control system of this invention incorporates a more sophisticated feed forward control term by changing the feed forward calibration from a lookup function based only on desired rail pressure to a lookup table based on desired rail pressure and RPCV flow and which has been found to be responsible for benefits in transient emissions and engine response and performance.
REFERENCES:
patent: 5121730 (1992-06-01), Ausman et al.
patent: 5176115 (1993-01-01), Campion
patent: 5181494 (1993-01-01), Ausman et al.
patent: 5191867 (1993-03-01), Glassey
patent: 5245970 (1993-09-01), Iwaskiewicz et al.
patent: 5313924 (1994-05-01), Regueiro
patent: 5357912 (1994-10-01), Barnes et al.
patent: 5357929 (1994-10-01), McCandless
"HEUI--A New Direction for Diesel Engine Fuel Systems", S. F. Glassey et al. SAE Paper No. 930270, Mar. 1993.
Moulis Thomas N.
Navistar International Transportation Corp.
Sullivan Dennis K.
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