Invention Grant
- Patent Title: Vehicle brake system with adaptive pressure calibration
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Application No.: US16751633Application Date: 2020-01-24
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Publication No.: US11667272B2Publication Date: 2023-06-06
- Inventor: Wendy P. Zhang , Christian Chemnitz , Christoph Probst
- Applicant: ZF Active Safety US Inc.
- Applicant Address: US MI Livonia
- Assignee: ZF Active Safety US Inc.
- Current Assignee: ZF Active Safety US Inc.
- Current Assignee Address: US MI Livonia
- Agent Robert James Harwood
- Main IPC: B60T17/22
- IPC: B60T17/22 ; F15B19/00 ; B60T13/66 ; B60T13/74 ; B60T13/68 ; F16K31/06 ; B60T15/02 ; F16K37/00

Abstract:
A method of calibrating a solenoid actuated valve includes: providing a brake system including a fluid pressure source: providing a valve having a solenoid, and wherein the valve is in fluid communication with the fluid pressure source; operating the fluid pressure source to provide a constant flow of fluid to the valve; energizing the solenoid of the valve with a constant current such that fluid flows through the valve; measuring the pressure of the fluid flowing at the valve; adjusting the current sent to the solenoid until a predetermined pressure has been obtained; storing a nominal current value of the current required to obtain the predetermined pressure; and calibrating the valve by adding a correction offset factor to the nominal current value for future actuation of the solenoid of the valve.
Public/Granted literature
- US20200238967A1 VEHICLE BRAKE SYSTEM WITH ADAPTIVE PRESSURE CALIBRATION Public/Granted day:2020-07-30
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