Interrelated power delivery controls – including engine control – Transmission control – Engine ignition control for transmission change
Patent
1996-07-22
1998-10-27
Ta, Khoi Q.
Interrelated power delivery controls, including engine control
Transmission control
Engine ignition control for transmission change
477109, 440 1, 440 84, 123331, F02N 900, F16H 5968
Patent
active
058271503
ABSTRACT:
A marine propulsion engine control system wherein the control includes an arrangement for slowing the speed of the engine by disabling certain cylinders in the event of an abnormal engine running condition. Also, an arrangement is provided for slowing the speed of the engine if a change speed transmission for driving the propulsion shaft by the engine offers more than a predetermined resistance to shifting. The controls are interrelated so that the engine protection control predominates. That is, if the engine is in protection control mode and the operator attempts a shift and more than a predetermined resistance is felt, the shift control routine will not be initiated to effect any additional engine speed reduction. In addition, when the engine speed is reduced, fuel is continued to be supplied by the fuel injectors to avoid backfiring, stalling, and uneven running. When rapid deceleration is called for the spark advance is rapidly retarded but fuel injection amount is gradually decreased.
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patent: 5579736 (1996-12-01), Nakamura et al.
patent: 5665025 (1997-09-01), Katoh
Ta Khoi Q.
Yamaha Hatsudoki Kabushiki Kaisha
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