Controller of transmission of variable-capacity pump motor type

A technology of control devices and pump motors, which is applied in transmission devices, vehicle gearboxes, fluid transmission devices, etc., can solve undeveloped problems and achieve the effect of rapid speed change

Inactive Publication Date: 2009-10-21
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventionally, no technique has been developed to detect or determine the locked state of one of the oil pump motors or the establishment of a fixed level associated with such a shift, or to perform the detection or judgment as part of the shift control. Therefore, in the transmission using the above-mentioned oil pump or pump motor, it is difficult to quickly perform a shift without a sense of incongruity.

Method used

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  • Controller of transmission of variable-capacity pump motor type
  • Controller of transmission of variable-capacity pump motor type
  • Controller of transmission of variable-capacity pump motor type

Examples

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Embodiment Construction

[0054] Next, the present invention will be described based on specific examples. First, the transmission targeted in the present invention will be described. The transmission targeted in the present invention is configured to have at least two power transmission paths, and can transmit power from the power source to the output member via these two power transmission paths. Torque, as a result, constitutes a transmission capable of continuously changing the ratio between the rotational speeds of the power source and the output member, that is, the gear ratio. Therefore, the transmission described in the aforementioned Japanese Patent Application Laid-Open No. 2006-266493 can also be used as an object.

[0055] More specifically, each of the above-mentioned power transmission paths includes a variable displacement pump motor functioning as a pump and a motor, and transmits torque corresponding to the displacement, and each of the variable displacement pump motors The pump motor...

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Abstract

Gear change of a transmission using variable-capacity pump motor with no increase of the rotational speed of the power source is possible by judging the fixed gear which is set by locking one of the pump motors. The controller comprises judging means (step S2) for judging whether the extrusion capacity of one of the pump motor is zero or not and transmission control means (step S3) for carrying out control to operate one of the synchronizers so that one of the transmission mechanisms for transmitting the power from the power source to the output shaft is brought into a power transmission disabled state from a power transmission enabled state when the judging means has judged that the extrusion capacity of one of the pump motors for transmitting the power from the power source to the output shaft through the one of the transmission mechanisms is zero.

Description

technical field [0001] The present invention relates to a control device of a transmission including at least one pair of variable displacement pump motors capable of receiving and receiving pressurized fluid, and at least two variable displacement pump motors for transmitting torque transmitted by each variable displacement pump motor to an output member. The transmission mechanism, the switching mechanism that switches each transmission mechanism between the power transferable state and the power non-transmittable state, can set a fixed gear stage determined by the transmission ratio of any transmission mechanism, and use each variable capacity pump The state of infinitely variable speed produced by the power change transmitted by the pressure fluid between the motors. Background technique [0002] Such a transmission is described in JP-A-2006-266493. Briefly describing the structure, each reaction member of a pair of planetary gear mechanisms is connected to a variable d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H47/04F16H61/02F16H59/14F16H59/50F16H61/40F16H61/4183F16H61/421F16H61/431
CPCF16H2200/2007F16H61/431F16H37/0826F16H47/04F16H61/421F16H2037/0873F16H2059/6853F16H3/006
Inventor 椎名贵弘舟桥真村上新山本真史
Owner TOYOTA JIDOSHA KK
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