Multi-stage compression ignition engine start

Details Multi-stage compression ignition engine start Multi-stage compression ignition engine start

2006-04-18

2006-04-18

Dolinar, Andrew M. (Department: 3747)

Internal-combustion engines

Starting device

Condition responsive control of starting device

Reexamination Certificate

active

07028657

ABSTRACT:
A powertrain includes a diesel compression engine and an electric machine operatively coupled thereto and effective to rotate the engine during engine cranking. Cold engine cranking is accomplished in a staged manner including a first stage wherein the engine is cranked to a first speed below the resonant speed of the coupled engine and electric machine combination for a first duration and thereafter cranked to a second speed above the resonant speed for a second duration. Transition out of cranking at the first and second speeds is accomplished when relative combustion stability is demonstrated. Cranking at the first or second speed is aborted when excessive crank times or if low battery voltages are observed. A third stage is included wherein the engine is cranked to a third speed below the engine idle speed. Transition out of cranking at the third speed is accomplished when relative combustion stability is demonstrated, whereafter normal engine control takes over.

REFERENCES:
patent: 4024408 (1977-05-01), Coleman et al.
patent: 5848577 (1998-12-01), Sappe et al.
patent: 2002-155774 (2005-05-01), None

Affiliated with

Also associated with

Rating

Multi-stage compression ignition engine start does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-stage compression ignition engine start, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-stage compression ignition engine start will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3527429