Apparatus for improving efficiency and consistency of a drag rac

Details Apparatus for improving efficiency and consistency of a drag rac Apparatus for improving efficiency and consistency of a drag rac

1988-12-19

1989-10-17

Diehl, Dwight G.

Machine element or mechanism

Alternate manual or power operators

73117, 74336R, 74473R, B60K 2002

Patent

active

048738913

ABSTRACT:
A system for automatically shifting the gears of a drag racing car transmission each time engine RPM reaches a predetermined level after leaving the starting line. The actual value of the predetermined level may be selectively adjusted by means of a potentiometer connected to the vehicle tachometer. A manually operable switch permits adjustment while racing an eight cylinder engine to only one-half the predetermined RPM level during adjustment. Additional potentiometers are preferably provided for limiting engine RPM to a first maximum value while racing the engine with the vehicle in first gear and held stationary at the starting line by the foot brake, and a second, higher, maximum value after leaving the starting line, both the first and second maximum RPM values being selectively and independently adjustable. Control of maximum RPM level is automatically changed from the first to the second value by movement of the throttle to the fully open position when leaving the starting line, and remains in this mode for a predetermined time period established by an electronic timer.

REFERENCES:
patent: 3516287 (1970-06-01), Masuda et al.
patent: 3713332 (1973-01-01), Herrbrich
patent: 4466279 (1984-08-01), Gable et al.
patent: 4554824 (1985-11-01), King et al.
patent: 4610179 (1986-09-01), Parker
patent: 4649742 (1987-03-01), Klausnitzer et al.

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