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A kind of dct transmission double pump system, control method and automobile

A transmission and pump system technology, applied in the direction of transmission control, toothed components, belts/chains/gears, etc., can solve the problems of high energy consumption in hydraulic systems, reduce system fuel consumption, and improve fuel economy performance.

Active Publication Date: 2020-12-29
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a DCT transmission double pump system, a control method and an automobile, so as to solve the problem of large energy consumption of the hydraulic system caused by a mechanical oil pump in the DCT transmission hydraulic system in the prior art

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  • A kind of dct transmission double pump system, control method and automobile
  • A kind of dct transmission double pump system, control method and automobile

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Embodiment Construction

[0051] refer to figure 1 , the present invention provides a dual-pump system for a DCT transmission, comprising: a controller; a drive motor 1 connected to the controller; a low-pressure oil pump 2 driven by the drive motor 1; a high-pressure oil pump 3 passed by the Driven by a drive motor 1; the low-pressure oil pump 2 and the high-pressure oil pump 3 run in the same direction and at the same speed; the cooling lubricating oil circuit 4 is supplied by the low-pressure oil pump 2; the first check valve 5 is installed on the The outlet end of the high-pressure oil pump 3; the high-pressure control oil circuit 6 and the accumulator 7 arranged in parallel, and the high-pressure control oil circuit 6 and the accumulator 7 are installed at the outlet end of the first one-way valve 5; An energy control valve 8, one end of which is arranged between the first check valve 5 and the high-pressure oil pump 3 through an oil circuit, and the other end is connected to the first oil pan tha...

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Abstract

The invention relates to a DCT transmission dual pump system, a control method and an automobile, for solving the problem of high energy consumption of the DCT transmission hydraulic system in the prior art due to a mechanical fuel pump. The DCT transmission dual pump system comprises: a controller, a drive motor connected to the controller, a low pressure oil pump driven by the drive motor, a high pressure oil pump driven by the drive motor, the low pressure oil pump and the high pressure oil pump running in the same direction and at the same speed, a cooling lubricating oil passage suppliedby the low pressure oil pump, a first one-way valve installed at an outlet end of the high pressure oil pump, a high pressure control oil passage and an accumulator arranged in parallel and installedat an outlet end of the first one-way valve, and an accumulator control valve, with one end arranged between the first one-way valve and the high pressure oil pump through an oil passage, and the other end communicating with a first oil sump that supplies oil to the high pressure oil pump through an oil passage.

Description

technical field [0001] The invention relates to the field of transmission control, in particular to a double-pump system of a DCT transmission, a control method and an automobile. Background technique [0002] As one of the main energy consumption of the transmission, the hydraulic system of the DCT transmission has always been the focus of attention in the design and development of the transmission. For a hydraulic system, its power consumption can be simply understood as being directly proportional to the product of system pressure and flow. As the power source of the hydraulic system, the oil pump’s energy consumption is directly related to the energy consumption of the hydraulic system. At present, DCT transmissions generally use a mechanical oil pump to supply oil to the hydraulic system by starting and running. In order to make the mechanical oil pump run at low engine speed To meet the needs of the transmission, it is usually necessary to design a larger displacement...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H61/00
CPCF16H61/0003F16H61/0025F16H2061/0034F16H2061/0037
Inventor 王肖彬赵宗琴余洪夏灵
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD