FUEL PUMP CONTROL DEVICE
1 Assignment
0 Petitions
Accused Products
Abstract
The control device controls a fuel pump which repeatedly executes a discharge operation of pressurizing and discharging fuel in a pressurizing chamber with the pressurizing member. Furthermore, the control device includes: a pressurizing chamber temperature obtaining unit which obtains a pressurizing chamber temperature which is a temperature of the fuel in the pressurizing chamber; and a discharge amount control unit which increases a fuel discharge amount by one discharge operation of the fuel pump when the pressurizing chamber temperature obtained by the pressurizing chamber temperature obtaining unit is higher than a threshold value.
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Citations
29 Claims
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1-14. -14. (canceled)
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15. A fuel pump control device which controls a fuel pump repeatedly executing a discharge operation of pressurizing and discharging fuel in a pressurizing chamber with a pressurizing member, the control device comprising:
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a pressurizing chamber temperature obtaining unit which obtains a pressurizing chamber temperature which is a temperature of the fuel in the pressurizing chamber; and a discharge amount control unit which increases a fuel discharge amount by one discharge operation of the fuel pump when the pressurizing chamber temperature obtained by the pressurizing chamber temperature obtaining unit is higher than a threshold value, wherein a holding container which holds the fuel discharged by the fuel pump in a pressurized state is connected to the fuel pump, the pressurizing chamber temperature obtaining unit includes a supply temperature obtaining unit which obtains a supply temperature which is a temperature of the fuel to be supplied to the fuel pump, and a holding pressure obtaining unit which obtains a holding pressure which is a pressure of the fuel in the holding container, and the pressurizing chamber temperature obtaining unit obtains the pressurizing chamber temperature based on the supply temperature obtained by the supply temperature obtaining unit, the holding pressure obtained by the holding pressure obtaining unit, a speed of the discharge operation of the fuel pump, and the fuel discharge amount by one discharge operation of the fuel pump. - View Dependent Claims (16, 18, 20, 21, 22, 23)
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17. A fuel pump control device which controls a fuel pump repeatedly executing a discharge operation of pressurizing and discharging fuel in a pressurizing chamber with a pressurizing member, the control device comprising:
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a pressurizing chamber temperature obtaining unit which obtains a pressurizing chamber temperature which is a temperature of the fuel in the pressurizing chamber; and a discharge amount control unit which increases a fuel discharge amount by one discharge operation of the fuel pump when the pressurizing chamber temperature obtained by the pressurizing chamber temperature obtaining unit is higher than a threshold value, wherein the discharge amount control unit reduces a number of times of the discharge operations in a predetermined period of the fuel pump when increasing the discharge amount of fuel by one discharge operation of the fuel pump.
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19. A fuel pump control device which controls a fuel pump repeatedly executing a discharge operation of pressurizing and discharging fuel in a pressurizing chamber with a pressurizing member, the control device comprising:
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a pressurizing chamber temperature obtaining unit which obtains a pressurizing chamber temperature which is a temperature of the fuel in the pressurizing chamber; and a discharge amount control unit which increases a fuel discharge amount by one discharge operation of the fuel pump when the pressurizing chamber temperature obtained by the pressurizing chamber temperature obtaining unit is higher than a threshold value, wherein a holding container which holds the fuel discharged by the fuel pump in a pressurized state is connected to the fuel pump, and the discharge amount control unit sets the fuel discharge amount by one discharge operation of the fuel pump such that a pulsation width of the holding pressure which is a pressure of the fuel in the holding container becomes smaller than an allowable value when the discharge amount control unit increases the fuel discharge amount by one discharge operation of the fuel pump.
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24. A fuel pump control device which controls a fuel pump repeatedly executing a discharge operation of pressurizing and discharging fuel in a pressurizing chamber with a pressurizing member, and in which a holding container, which holds the fuel discharged by the fuel pump in a pressurized state, is connected to the fuel pump, the control device comprising:
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a discharge amount setting unit which sets a fuel discharge amount by one discharge operation of the fuel pump based on a holding pressure which is a pressure of the fuel in the holding container; and a discharge amount control unit which increases a fuel discharge amount by one discharge operation of the fuel pump when the discharge amount set by the discharge amount setting unit is smaller than a threshold value. - View Dependent Claims (25)
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26. A fuel pump control device which controls a fuel pump repeatedly executing a discharge operation of pressurizing and discharging fuel in a pressurizing chamber with a pressurizing member, and in which a holding container, which holds the fuel discharged by the fuel pump in a pressurized state, is connected to the fuel pump, the control device comprising:
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a discharge amount setting unit which sets a fuel discharge amount by one discharge operation of the fuel pump based on a holding pressure which is a pressure of the fuel in the holding container; and a discharge amount control unit which sets the fuel discharge amount by one discharge operation of the fuel pump to be larger than a predetermined amount regardless of the discharge amount set by the discharge amount setting unit when the discharge amount is smaller than a threshold value. - View Dependent Claims (28)
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27. A fuel pump control device which controls a fuel pump repeatedly executing a discharge operation of pressurizing and discharging fuel in a pressurizing chamber with a pressurizing member, and in which a holding container, which holds the fuel discharged by the fuel pump in a pressurized state, is connected to the fuel pump, the control device comprising:
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a discharge amount setting unit which sets a fuel discharge amount by one discharge operation of the fuel pump based on a holding pressure which is a pressure of the fuel in the holding container; and a discharge amount control unit which sets the fuel discharge amount by one discharge operation of the fuel pump to be larger than a predetermined amount regardless of the discharge amount set by the discharge amount setting unit when the holding pressure is higher than a threshold value. - View Dependent Claims (29)
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Specification