SYSTEM AND METHOD FOR CONTROLLING OIL PUMP
First Claim
9. An oil pressure control system for controlling oil pressure of an electronic oil pump, comprising:
- an engine rotation speed sensor configured to measure a rotation speed of an engine;
an oil temperature sensor configured to measure an oil temperature;
an oil pressure sensor configured to detect current oil pressure of the electronic oil pump; and
a control unit configured to control the electronic oil pump based on information of the engine rotation speed, the oil temperature, and the oil pressure transmitted from the engine rotation speed sensor, the oil temperature sensor, and the oil pressure sensor,wherein the control unit controls the electronic oil pump by setting an initial target oil pressure of the electronic oil pump based on the rotation speed or the oil temperature;
determining a target torque or a target fuel quantity of the engine;
determining a pressure compensation value by considering the determined target torque or target fuel quantity of the engine based on the initial target oil pressure;
determining a final target oil pressure by adding the pressure compensation value to the initial target oil pressure; and
feedback-controlling the electronic oil pump so that current oil pressure measured in real time follows the final target oil pressure.
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Accused Products
Abstract
Disclosed are an oil pump control system and method, the oil pump control method including setting an initial target oil pressure of the oil pump based on a rotation speed of an engine or an oil temperature, determining a pressure compensation value by considering the target torque or target fuel quantity of the engine based on the initial target oil pressure, determining a final target oil pressure by adding the pressure compensation value to the initial target oil pressure, and feedback-controlling the oil pump so that current oil pressure measured in real time follows the final target oil pressure.
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Citations
16 Claims
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9. An oil pressure control system for controlling oil pressure of an electronic oil pump, comprising:
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an engine rotation speed sensor configured to measure a rotation speed of an engine; an oil temperature sensor configured to measure an oil temperature; an oil pressure sensor configured to detect current oil pressure of the electronic oil pump; and a control unit configured to control the electronic oil pump based on information of the engine rotation speed, the oil temperature, and the oil pressure transmitted from the engine rotation speed sensor, the oil temperature sensor, and the oil pressure sensor, wherein the control unit controls the electronic oil pump by setting an initial target oil pressure of the electronic oil pump based on the rotation speed or the oil temperature;
determining a target torque or a target fuel quantity of the engine;
determining a pressure compensation value by considering the determined target torque or target fuel quantity of the engine based on the initial target oil pressure;
determining a final target oil pressure by adding the pressure compensation value to the initial target oil pressure; andfeedback-controlling the electronic oil pump so that current oil pressure measured in real time follows the final target oil pressure. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16)
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14-1. The oil pump control method of claim 12, wherein the pressure compensation factor is determined from a fuel quantity-based compensation factor map preset according to the target fuel quantity of the engine and the rotation speed of the engine.
Specification