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US 10,118,597 B2Granted
Parking brake controller an method to maintain a trailer air supply
AssigneeBendix Commercial Vehicle Systems LLC
InventorsDavid J Taneyhill, Thomas S Miller, Jr., Timothy Carritte
Life of this patent
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Abstract
A controller for a parking brake system for a commercial vehicle is disclosed. The controller receives a signal indicative of a request to park a tractor, a signal indicative of a request to supply air to a trailer and a signal indicative of a vehicle operating condition. The controller transmits a control signal to a tractor parking brake device and a trailer air supply device in order to park the tractor and maintain the air supply to the trailer to suspend the parking of the trailer in response to the signals.
Claims32
A controller for a parking brake system for a commercial vehicle comprising:
- a first input for receiving a signal indicative of a request to park a tractor;
- a second input for receiving a signal indicative of a request to supply air to a trailer and release the trailer parking brakes;
- a first output for transmitting a tractor park control signal;
- a second output for transmitting a trailer supply control signal;
- and
- control logic, the control logic capable of
- transmitting a trailer supply control signal to maintain the trailer air supply and release of the trailer parking brakes in response to the signal indicative of the request to supply air to the trailer being received prior to the signal indicative of a request to park the tractor;
- transmitting a tractor park control signal in response to the signal indicative of a request to park the tractor and;
- transmitting the trailer supply control signal automatically to evacuate the trailer air supply in response to the signal indicative of the request to supply air to the trailer not being received prior to the signal indicative of the request to park the tractor.
6 more elements
A controller for a parking brake system for a commercial vehicle comprising:
- a first input for receiving a signal indicative of a request to park a tractor;
- a second input for receiving a signal indicative of a request to supply air to a trailer;
- a third input for receiving a signal indicative of the vehicle operating condition;
- a first output for transmitting a control signal to a tractor parking brake device;
- a second output for transmitting a control signal to a trailer air supply device;
- and
- control logic, the control logic capable of
- transmitting a control signal to the tractor parking brake device in response to the signal indicative of a request to park the tractor;
- transmitting a control signal to the trailer air supply device to maintain the trailer air supply to the trailer and the release of the trailer parking brakes in response to the signal indicative of the request to park the tractor being received subsequent to the request to supply air to the trailer, and the signal indicative of the vehicle operating condition meeting a predetermined condition, wherein the predetermined operating condition comprises the vehicle speed being about zero;
- and
- transmitting the control signal automatically to the trailer air supply device to evacuate the trailer air supply to the trailer in response to the signal indicative of the request to supply air to the trailer not being received prior to the signal indicative of the request to park the tractor.
8 more elements
A controller for a parking brake system for a vehicle comprising control logic capable of:
- receiving a state of a tractor park switch;
- receiving a state of a trailer supply switch;
- receiving a signal indicative of a vehicle operating condition;
- transmitting a signal to a tractor parking brake device to park the tractor and transmitting a signal to a trailer supply device to maintain supply pressure to the trailer and release of the trailer parking brakes in response to the signal indicative of the vehicle operating condition meeting a predetermined operating condition, the tractor park switch being in a second state and the trailer supply switch being in a first state and
- transmitting a signal to a trailer supply device automatically to exhaust the air supply to the trailer in response to the signal indicative of the vehicle operating condition not meeting the predetermined operating condition and the tractor park switch being in a second state.
2 more elements
A system for parking brake control for a vehicle comprising:
- a tractor park switch;
- a trailer supply switch;
- a tractor parking brake device;
- a trailer supply device;
- a controller, the controller comprising:
- a first input for the receiving a state of the tractor park switch;
- a second input for receiving a state of the trailer supply switch;
- a communications input for receiving a signal indicative of a vehicle operating condition;
- and
- control logic, the control logic capable of:
- receiving a state of the tractor park switch;
- receiving a state of the trailer supply switch;
- receiving a vehicle operating condition;
- transmitting a control signal to the tractor parking brake device to park the tractor and transmitting a control signal to the trailer supply device to maintain the air supply to the trailer and release of the trailer parking brakes in response to the vehicle operating condition meeting a predetermined operating condition, the tractor park switch being in a second state and the trailer supply switch being in a first state;
- and
- transmitting a control signal to a trailer supply device to exhaust the air supply to the trailer in response to the vehicle operating condition not meeting the predetermined operating condition and the tractor park switch being in a second state.
13 more elements
A method of maintaining a trailer air supply comprising:
- actuating a trailer supply switch to transmit a signal indicative of a request to maintain the trailer parking brake in a released state;
- actuating a tractor park switch to transmit a signal indicative of a request to park a tractor subsequent to the actuation of the trailer supply switch;
- maintaining a trailer air supply such that the trailer parking brakes are released and parking the tractor in response actuating the trailer supply switch prior to actuating the tractor park switch;
- and
- evacuating the trailer air supply such that the trailer parking brake are applied automatically in response to the trailer supply switch not being activated prior to the tractor parking switch being activated.
2 more elements
A system for maintaining a trailer air supply comprising:
- means for generating a signal indicative of an operator's intent to supply air to the trailer;
- means for generating a signal indicative of an operator's intent to park a tractor;
- means for parking the tractor;
- means for supplying air to the trailer;
- and
- a controller comprising control logic, the control logic capable of:
- receiving a signal indicative of a vehicle operating condition;
- transmitting a control signal to the means for parking the tractor in response to the signal indicative of the operator's intent to park the tractor;
- transmitting a control signal to the means for supplying air to the trailer to maintain the trailer air supply to release the trailer parking brakes in response to receiving the signal indicative of the operator's intent to park the tractor subsequent to receiving the signal indicative of the operator's intent to supply air to the trailer and receiving the signal indicative of the vehicle operating condition meeting a predetermined operating condition;
- and
- transmitting a control signal to the means for supply air to the trailer automatically to evacuate the trailer air supply to park the trailer in response to the signal indicative of the operator's intent to supply air to the trailer not being received prior to the signal indicative of the operator's intent to park the tractor.
8 more elements
Dependencies are inferred from the claim text.