Method and apparatus for controlling an automotive drive system

Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position

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74878, 192 0075, 192 0076, B60K 4106

Patent

active

046215450

ABSTRACT:
To prevent jolts or shocks interfering with smooth operation of an automotive vehicle upon disengagement of an automatic free-wheeling arrangement and reestablishment of engine braking, a control element (22, 23) is provided, controlled by the system, typically coupled to the brake light switch, which reestablishes positive drive connection between engine and wheels to permit engine braking, to reduce the torque supplied by the engine at the re-engagement instant, to thereby insure smooth transition from free-wheeling to engine braking. Preferably, the engine speed is sensed, and the speed of the shaft beyond the free-wheeling arrangement is sensed (points A, B), and engine torque is reduced just before synchronism is achieved.

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patent: 4295551 (1981-10-01), Zimmerman et al.
patent: 4319501 (1982-03-01), Sugimoto
patent: 4344513 (1982-08-01), Etienne
patent: 4350234 (1982-09-01), Suga et al.
patent: 4363389 (1982-12-01), Zaunberger et al.
patent: 4408293 (1983-10-01), Avins
patent: 4418810 (1983-12-01), Windsor

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