Fluid circuit module and automatic transmission
AssigneeDenso Corporation
InventorsFuminori Suzuki, Hitoshi Tanaka
Life of this patent
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Abstract
A fluid circuit module controls a fluid to be supplied to a movable element in an automatic transmission. The fluid circuit module is provided with a first body in which a first flow passage is formed, a second body in which a second flow passage is formed. A separation plate is set between the first body and the second body and has a deformation portion that is deformed and strained in accordance with the difference between pressures in the first flow passage and the second flow passage. A strain sensor is attached to the deformation portion for detecting a strain of the deformation portion. A control means controls a supply fluid to be supplied to the movable element on the basis of a detection result of the strain sensor.
Claims26
A fluid circuit module for controlling a fluid to be supplied to a movable element in an automatic transmission, comprising:
- a first body in which a first flow passage is formed;
- a second body in which a second flow passage is formed;
- a separation plate that is set between the first body and the second body and has a deformation portion that is deformed and strained in accordance with a difference between pressures in the first flow passage and the second flow passage;
- a strain sensor attached to the deformation portion, for detecting a strain of the deformation portion;
- and
- control means for controlling a supply fluid to be supplied to the movable element on the basis of a detection result of the strain sensor.
An automatic transmission comprising:
- a movable element;
- a first body in which a first flow passage is formed;
- a second body in which a second flow passage is formed;
- a separation plate that is set between the first body and the second body and has a deformation portion that is deformed and strained in accordance with a difference between pressures in the first flow passage and the second flow passage;
- a strain sensor attached to the deformation portion, for detecting a strain of the deformation portion;
- and
- control means for controlling a supply fluid to be supplied to the movable element on the basis of a detection result of the strain sensor.
A fluid circuit module for controlling a fluid to be supplied to a movable element via a case flow passage in an automatic transmission in which the case flow passage is formed in a case that houses the movable element, comprising:
- a module body in which a module flow passage is formed;
- a separation plate that is set between the module body and the case and has a deformation portion that is deformed and strained in accordance with a difference between pressures in the module flow passage and the case flow passage;
- a strain sensor attached to the deformation portion, for detecting a strain of the deformation portion;
- and
- control means for controlling a supply fluid to be supplied to the movable element on the basis of a detection result of the strain sensor.
An automatic transmission comprising:
- a movable element;
- a case that houses the movable element and in which a case flow passage is formed;
- a module body in which a module flow passage is formed;
- a separation plate that is set between the module body and the case and has a deformation portion that is deformed and strained in accordance with a difference between pressures in the module flow passage and the case flow passage;
- a strain sensor attached to the deformation portion, for detecting a strain of the deformation portion;
- and
- control means for controlling a supply fluid to be supplied to the movable element on the basis of a detection result of the strain sensor.
Dependencies are inferred from the claim text.