Tractor data center

Details Tractor data center Tractor data center

1981-07-17

1983-12-06

Trafton, David L.

Communications: electrical

Selective

Having indication or alarm

180197, 303100, 324161, 340 62, 361238, 361242, B60Q 100

Patent

active

044196547

ABSTRACT:
A monitoring apparatus for a vehicle such as a tractor comprises a console including controls and a control circuit for calculating wheel slippage of at least one drive wheel of the vehicle and responsive to engine RPM of the vehicle and to the rotational speed of the drive wheel for calculating a predetermined relationship therebetween. The control circuit is also responsive to actuation of the controls for setting the calculated relationship equal to a predetermined reference value when there is substantially no load on the vehicle, and hence minimum slippage of the drive wheel, in each of a plurality of ranges of gear ratios of the vehicle, thereby calibrating the control circuit to calculate wheel slippage for each of these ranges of gear ratios. The console also mounts an observable indicator and the control circuit also calculates other variables such as vehicle speed and engine RPM and actuates the observable indicator when the calculated values deviate from preselected values.

REFERENCES:
patent: 3874743 (1975-04-01), Fleischer et al.
patent: 3966265 (1976-06-01), Taylor et al.
patent: 4086563 (1978-04-01), Bachman
patent: 4109234 (1978-08-01), Davis
patent: 4114957 (1978-09-01), Eichhorst
patent: 4125825 (1978-11-01), Takeuchi et al.
patent: 4347569 (1982-08-01), Allen, Jr. et al.
patent: 4354173 (1982-10-01), Kuhn et al.

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