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US 5,957,805 AGranted
Motor vehicle
AssigneesLuK Getriebe-Systeme GmbH, Daimler-Benz Aktiengesellschaft
InventorsMichael Salecker, Klaus Kupper, Martin Vornehm, Franz Kosik, Thomas Grass
Life of this patent
Estimating the term…
Abstract
A motor vehicle wherein the power train comprises an automated clutch between the engine and a manually shiftable transmission. The control circuit for the clutch is designed in such a way that the clutch is disengaged in response to actuation of the gear shifting lever simultaneously with one or more additional undertakings such as actuation of the gas pedal and of one or more brakes, a reduction of the speed of the vehicle below a preselected value, and/or many others.
Claims20
In a motor vehicle, a combination comprising:
- a driving unit;
- a transmission having a variable transmission ratio;
- means for selecting said transmission ratio, including an actuatable servicing element;
- an automated engageable and disengageable torque transmitting system;
- an actuatable load lever;
- actuatable brake means;
- a signal transmitting sensor arrangement including means for monitoring the condition of said servicing element, said load lever and said brake means;
- and
- a control unit arranged to receive signals from said sensor arrangement and to generate a control signal, in response to which said torque transmitting system is disengaged, when said servicing element is actuated simultaneously with said load lever and said brake means.
6 more elements
In a variable-speed motor vehicle, a combination comprising:
- a driving unit;
- a transmission having a variable transmission ratio;
- means for selecting said transmission ratio, including an actuatable servicing element;
- an automated engageable and disengageable torque transmitting system;
- a signal transmitting sensor arrangement including means for monitoring the condition of said servicing element and the speed of the motor vehicle;
- and
- a control unit arranged to receive signals from said sensor arrangement and to generate a control signal, in response to which said torque transmitting system is disengaged, when the speed of the motor vehicle is below a preselectable value in response to actuation of said servicing element.
4 more elements
In a variable-speed motor vehicle, a combination comprising:
- a variable torque-transmitting, variable-RPM engine;
- actuatable vehicle and parking brakes;
- a door having open and closed positions;
- a pivotable throttle valve;
- a transmission having a variable transmission ratio;
- means for selecting said transmission ratio, including an actuatable servicing element;
- an actuatable idling switch;
- an automated engageable and disengageable torque transmitting system;
- a load lever actuatable to a variable extent;
- a signal transmitting sensor arrangement including means for monitoring the condition of said servicing element, said load lever, said brakes, said idling switch and said load lever, the position of said door, the speed of the vehicle, the engine torque, the extent of pivoting of said throttle valve, and the engine RPM;
- and
- a control unit arranged to receive signals from said sensor arrangement and to generate a control signal, in response to which said torque transmitting system is disengaged, when said servicing element is actuated and in response to the fulfillment of at least one of the following prerequisites:
- said idling switch is actuated,
- said load lever is actuated to less than a predetermined extent,
- said throttle valve is pivoted to less than a predetermined extent,
- at least one of said brakes is actuated,
- said door is open,
- the speed of the motor vehicle is below a predetermined value,
- the value of the gradient of engine torque, in the event of a negative gradient, exceeds a preselectable limit value,
- the value of the gradient of the engine RPM, in the event of a negative gradient, exceeds a preselectable limit value, and
- the value of the gradient of the vehicle speed, in the event of a negative gradient, exceeds a preselected limit value.
18 more elements
In a variable-speed motor vehicle, a combination comprising:
- a varible torque-transmitting, variable-RPM engine;
- actuatable vehicle and parking brakes;
- a door having open and closed positions;
- a pivotable throttle valve;
- a transmission having a variable transmission ratio;
- means for selecting said transmission ratio, including an actatable servicing element;
- an actuatable idling switch;
- an automated engageable and disengageable torque transmitting system;
- a load lever actuatable to a variable extent;
- a signal transmitting sensor arrangement including means for monitoring the condition of said servicing element, said load lever, said brakes, said idling switch and said load lever, the poisition of said door, the speed of the vehicle, the engine torque, the extent of pivoting of said throttle valve, and the engine RPM;
- and
- a control unit arranged to receive signals from said sensor arrangement and to generate a control signal, in response to which said torque transmitting system is disengaged, when said servicing element is actuated and after elapse of a predetermined interval of time, provided that said servicing element remains actuated during and after the elapse of said interval and in response to fulfillment of at least one of the following prerequisites:
- said idling switch is actuated,
- said load lever is actuated to less than a predetermined extent,
- said throttle valve is pivoted to less than a predetermined extent,
- at least one of said brakes is actuated,
- said door is open,
- the speed of the motor vehicle is below a predetermined value,
- the value of the gradient of engine torque, in the event of a negative gradient, exceeds a preselectable limit value,
- the value of the gradient of the engine RPM, in the event of a negative gradient, exceeds a preselectable limit value, and
- the value of the gradient of the vehicle speed, in the event of a negative gradient, exceeds a preselected limit value.
18 more elements
Dependencies are inferred from the claim text.