Windscreen washer
First Claim
1. A window and/or lamp washer system for a vehicle comprising;
- a washer fluid container;
a washer fluid pump arranged in fluid communication with the washer fluid container;
a washer fluid pressure tank for storing pressurized fluid, arranged in fluid communication with the washer fluid pump, and comprising a fluid inlet for receiving pressurized fluid from the washer fluid pump, at least one fluid outlet for providing pressurized fluid in the form of a washer fluid jet, and a compressible air pocket or a spring assembly;
a sensor arranged to provide a signal representing measured pressure within the washer fluid pressure tank; and
a control unit for receiving the signal;
wherein the control unit is configured to operate the washer fluid pump based on the signal, whereby, when the signal indicates a pressure below a predetermined value, the control unit is configured to operate the washer fluid pump to pump washer fluid from the washer fluid container to the washer fluid pressure tank and increase the pressure in the washer fluid pressure tank.
1 Assignment
0 Petitions
Accused Products
Abstract
A window and/or lamp washer system for a vehicle comprising a washer fluid container, a washer fluid pump arranged in fluid communication with the washer fluid container, at least one washer fluid pressure tank for storing pressurized fluid, arranged in fluid communication with the washer fluid pump, and comprising a fluid inlet for receiving pressurized fluid from the pump and at least one fluid outlet for providing pressurized fluid in the form of a washer fluid jet, sensor means arranged to provide a signal representing the measured pressure within the at least one washer fluid pressure tank, a control unit connected to the sensor means and the washer fluid pump, and arranged to receive the signal, wherein the control unit is configured to operate the washer fluid pump based on the signal, whereby a signal representing a value below a predetermined level cause the pump to increase the pressure.
5 Citations
20 Claims
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1. A window and/or lamp washer system for a vehicle comprising;
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a washer fluid container; a washer fluid pump arranged in fluid communication with the washer fluid container; a washer fluid pressure tank for storing pressurized fluid, arranged in fluid communication with the washer fluid pump, and comprising a fluid inlet for receiving pressurized fluid from the washer fluid pump, at least one fluid outlet for providing pressurized fluid in the form of a washer fluid jet, and a compressible air pocket or a spring assembly; a sensor arranged to provide a signal representing measured pressure within the washer fluid pressure tank; and a control unit for receiving the signal; wherein the control unit is configured to operate the washer fluid pump based on the signal, whereby, when the signal indicates a pressure below a predetermined value, the control unit is configured to operate the washer fluid pump to pump washer fluid from the washer fluid container to the washer fluid pressure tank and increase the pressure in the washer fluid pressure tank. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for controlling a window and/or lamp washer system for a vehicle, wherein the system comprises a washer fluid container, a washer fluid pump arranged in fluid communication with the washer fluid container, and at least one washer fluid pressure tank for storing pressurized fluid, arranged in fluid communication with the washer fluid pump, and comprising a fluid inlet for receiving pressurized fluid from the washer fluid pump and at least one fluid outlet for providing pressurized fluid in the form of a washer fluid jet, the method comprising:
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measuring pressure in the at least one washer fluid pressure tank; and operating the washer fluid pump to pump washer fluid from the washer fluid container to the at least one washer fluid pressure tank and increase the pressure, when the pressure is below a predetermined value; wherein the at least one washer fluid pressure tank comprises a compressible air pocket or a spring assembly. - View Dependent Claims (15, 16, 17)
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18. A window and/or lamp washer system for a vehicle comprising;
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a washer fluid container; a washer fluid pump arranged in fluid communication with the washer fluid container; at least one washer fluid pressure tank for storing pressurized fluid, arranged in fluid communication with the washer fluid pump, and comprising a fluid inlet for receiving pressurized fluid from the washer fluid pump and at least one fluid outlet for providing pressurized fluid in the form of a washer fluid jet; sensor means arranged to provide a signal representing measured pressure within the at least one washer fluid pressure tank; a control unit connected to the sensor means and the washer fluid pump, and arranged to receive the signal; at least one controllable valve in fluid communication with the at least one fluid outlet; at least one washer fluid jet nozzle in fluid communication with the at least one controllable valve; and a pressure throttling device arranged in between the at least one washer fluid jet nozzle and the at least one controllable valve; wherein the at least one controllable valve is operable to release washer fluid from the at least one washer fluid pressure tank to the at least one washer fluid jet nozzle, and wherein the control unit is configured to operate the washer fluid pump based on the signal, whereby, when the signal indicates a pressure below a predetermined value, the control unit is configured to operate the washer fluid pump to pump washer fluid from the washer fluid container to the at least one washer fluid pressure tank and increase the pressure in the at least one washer fluid pressure tank. - View Dependent Claims (19, 20)
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Specification