Coolant pump control systems and methods for backpressure compensation
AssigneeGM Global Technology Operations LLC
InventorsEugene V. Gonze, Vijay Ramappan, Yue-Ming Chen
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Abstract
A target speed module determines a target speed of an engine coolant pump of the vehicle. A speed adjustment module determines a speed adjustment based on a position of a valve, wherein a backpressure of the engine coolant pump changes when the position of the valve changes. An adjusted target speed module determines an adjusted target speed for the engine coolant pump based on the target speed and the speed adjustment. A speed control module controls a speed of the engine coolant pump based on the adjusted target speed.
Claims20
A coolant control system for a vehicle, comprising:
- a target speed module that determines a target speed of an engine coolant pump of the vehicle;
- a speed adjustment module that determines a speed adjustment based on a position of a valve,
- wherein a backpressure of the engine coolant pump changes when the position of the valve changes;
- an adjusted target speed module that determines an adjusted target speed for the engine coolant pump based on the target speed and the speed adjustment;
- and
- a speed control module that controls a speed of the engine coolant pump based on the adjusted target speed.
A coolant control method for a vehicle, comprising:
- determining a target speed of an engine coolant pump of the vehicle;
- determining a speed adjustment based on a position of a valve,
- wherein a backpressure of the engine coolant pump changes when the position of the valve changes;
- determining an adjusted target speed for the engine coolant pump based on the target speed and the speed adjustment;
- and
- controlling a speed of the engine coolant pump based on the adjusted target speed.
Dependencies are inferred from the claim text.