Boots – shoes – and leggings
Patent
1988-08-18
1991-04-30
Gruber, Felix D.
Boots, shoes, and leggings
3644241, 36443101, B60K 4108, B60K 4128, G05D 1366
Patent
active
050124188
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a vehicle operating and speed regulating device.
BRIEF DESCRIPTION OF THE PRIOR ART
Operating a vehicle with an automatic transmission in the drive path by means of a gear shift lever and a gas pedal, where the drive ratio of the engine is regulated by the driver by means of the known gas pedal according to the desired driving speed and the running resistances--for example, ascending gradients, descending gradients and air resistance depending upon driving speed--is known. In that situation, the transmission is shifted according to relatively roughly differentiated load-controlled shift points in accordance with the engine's characteristic diagram as shown in ATZ 85 (1983) 6 from page 401.
Influencing the engine through a speed regulator so that the vehicle travels at a nearly constant speed without actuation of the gas pedal, with the transmission also being involved in the adjustment to the preset speed through another electronic device, is also known.
And finally, along with the actuation of the speed regulator by a first activating key after the interruption of this device by activation of the brake pedal, attaining the previously set vehicle speed again by a second activating key without activating the gas pedal is known from DE-OS 35 06 363.
When that is the situation, the previous driving speed is desired and attained, in a preprogrammed acceleration, when the engine power and the running resistances present--ascending gradients, for example--permit it.
Such devices improve the operation of a motor vehicle and can lead to a consumption-oriented way of driving in constant travel and during acceleration. But the overall effect is relatively slight since this device is seldom used because of the additional control that is required. Manipulation is also necessary and complicated, so that use is almost exclusively in very quiet traffic situations.
Therefore, it is the object of the invention to further develop a vehicle operating and speed regulating device so that an electronic controlling and regulating device influences engine and transmission operation more advantageously and further relieves the driver in the task of operating the vehicle.
SUMMARY OF THE INVENTION
The reduction of vehicle operation to an acceleration pedal and deceleration pedal, both of which work on an electronic controlling and regulating device, not only simplifies operation but also makes the application of an optimal adjustment of engine, transmission and vehicle performance possible under all driving conditions. In that situation, the electronic controlling and regulating device comprises a common device for influencing the engine, keeping speed constant, controlling transmission and clutch operation and interlinked individual control mechanisms for the main function, as is known from DE-OS 35 06 363. By the combination of the acceleration and deceleration pedals with the electronic controlling and regulating device and as a result of expansion of the influence of the engine and transmission in combination with the simple operation, the desired driving conditions can be linked much more optimally with the engine and transmission characteristics.
No driver is able to actuate a gas pedal so that the engine is always operated in the optimum of the characteristic diagram. In known automatic transmissions, the shift points or shift cycles are preset for the transmission, depending upon the gas pedal's position, by an electronic control mechanism, so that a high pendulum dynamic is also followed by a high shift point change. With the present invention, the driver only continues to choose the driving condition and not the engine load and the transmission condition. Instead, the electronic controlling and regulating device registers the desired driving conditions that are fed in by the driver through the acceleration and deceleration pedals and selects engine load and transmission multiplication according to a preset strategy, for example fuel consumption, whereby considera
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Lorenz, K. et al., Application of the 4 HP 22 Four-Speed Automatic Transmission with Electronic/Hydraulic Control, ATZ Automobiltechnische Zeitschrift, 1983, No. 6, pp. 401-405.
Gruber Felix D.
Zahnradfabrik Friedrichshafen AG.
Zalkind Albert M.
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