Control device for continuously variable transmission
First Claim
1. A control device for a continuously variable transmission which includes a belt wound around a primary pulley and a secondary pulley, and which is shifted by controlling belt clamping forces of the primary pulley and the secondary pulley, the control device comprising:
- a line pressure generating section configured to generate a line pressure;
a pilot valve configured to supply a pilot pressure regulated so as not to exceed a first predetermined pressure when the line pressure exceeds the first predetermined pressure;
a control section configured to generate a belt clamping pressure from the line pressure supplied as a source pressure of the belt clamping forces by controlling solenoid valves by the pilot pressure;
an oil vibration sensing section configured to sense an oil vibration; and
a line pressure increase section configured to increase the line pressure to be greater than the first predetermined pressure when the oil vibration sensing section senses the oil vibration in a state where the line pressure is lower than the first predetermined pressure.
1 Assignment
0 Petitions
Accused Products
Abstract
A control device for a continuously variable transmission includes: a line pressure generating means configured to generate a line pressure; a pilot valve configured to supply a pilot pressure regulated so as not to exceed a first predetermined pressure when the line pressure exceeds the first predetermined pressure; a control means configured to control solenoid valves by the pilot pressure, and thereby to generate belt clamping forces; an oil vibration sensing means configured to sense an oil vibration; and a line pressure increase means configured to increase the line pressure to be greater than the first predetermined pressure when the oil vibration sensing means senses the oil vibration.
10 Citations
8 Claims
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1. A control device for a continuously variable transmission which includes a belt wound around a primary pulley and a secondary pulley, and which is shifted by controlling belt clamping forces of the primary pulley and the secondary pulley, the control device comprising:
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a line pressure generating section configured to generate a line pressure; a pilot valve configured to supply a pilot pressure regulated so as not to exceed a first predetermined pressure when the line pressure exceeds the first predetermined pressure; a control section configured to generate a belt clamping pressure from the line pressure supplied as a source pressure of the belt clamping forces by controlling solenoid valves by the pilot pressure; an oil vibration sensing section configured to sense an oil vibration; and a line pressure increase section configured to increase the line pressure to be greater than the first predetermined pressure when the oil vibration sensing section senses the oil vibration in a state where the line pressure is lower than the first predetermined pressure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification