Method and system for supplying diesel to a motor vehicle
First Claim
1. A method for controlling a system for supplying diesel fuel to an internal combustion engine on a motor vehicle, the internal combustion engine stopping in response to a stop command, the system comprising a fuel tank, a first pump that is a low-pressure pump taking fuel from the fuel tank and delivering the fuel to a second pump that is a high-pressure pump, the method comprising:
- controlling, via a control unit of the motor vehicle, a pressure of the first pump to regulate a quantity of fuel provided by the first pump, the pressure being determined by the control unit as a function of needs of the second pump;
determining, via the control unit, that a geographical position of the motor vehicle is in a predefined probable stopping zone; and
modifying, prior to the stop command being given to the internal combustion engine, the controlling by the control unit to set the pressure in the first pump to a maximum pressure level in response to the control unit determining that the geographical position of the motor vehicle is in the predefined probable stopping zone.
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Accused Products
Abstract
A method controls a system for supplying diesel fuel on a motor vehicle. The system includes a fuel tank, a first pump that is a low-pressure pump taking fuel from the tank and delivering the fuel to a second pump that is a high-pressure pump. The method includes controlling the first pump to regulate the quantity of fuel provided as a function of the needs of the second pump, and determining a geographical position of the vehicle. The first pump is controlled to a maximum pressure level when the vehicle is in one of several predefined probable stopping zones.
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Citations
11 Claims
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1. A method for controlling a system for supplying diesel fuel to an internal combustion engine on a motor vehicle, the internal combustion engine stopping in response to a stop command, the system comprising a fuel tank, a first pump that is a low-pressure pump taking fuel from the fuel tank and delivering the fuel to a second pump that is a high-pressure pump, the method comprising:
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controlling, via a control unit of the motor vehicle, a pressure of the first pump to regulate a quantity of fuel provided by the first pump, the pressure being determined by the control unit as a function of needs of the second pump; determining, via the control unit, that a geographical position of the motor vehicle is in a predefined probable stopping zone; and modifying, prior to the stop command being given to the internal combustion engine, the controlling by the control unit to set the pressure in the first pump to a maximum pressure level in response to the control unit determining that the geographical position of the motor vehicle is in the predefined probable stopping zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification