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Stepless automatic transmission hydraulic control system, automatic transmission assembly and vehicle

A technology of hydraulic control system and automatic transmission, which is applied in the direction of transmission control, transmission parts, components with teeth, etc., and can solve problems such as large pressure fluctuations, large shifting shocks, and low transmission efficiency

Pending Publication Date: 2021-05-18
HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION LIMITED
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Based on this, the present invention proposes an energy-saving hydraulic control system, which aims to solve the problem of large shifting shock, large pressure fluctuation and low transmission efficiency in the hydraulic control system of continuously variable automatic transmission in the prior art. technical issues

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  • Stepless automatic transmission hydraulic control system, automatic transmission assembly and vehicle
  • Stepless automatic transmission hydraulic control system, automatic transmission assembly and vehicle

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Embodiment Construction

[0027] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0028] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground co...

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Abstract

The invention discloses a stepless automatic transmission hydraulic control system. The stepless automatic transmission hydraulic control system involves a first oil pump, a second oil pump, a first-stage pressure oil way, a second-stage pressure oil way and an auxiliary oil way, wherein an outlet of the first oil pump and an outlet of the second oil pump are both connected to the first-stage pressure oil way, the stepless automatic transmission hydraulic control system further involves a first-stage pressure control valve, an oil pump displacement switching valve, an active pressure control valve and a passive pressure control valve which are arranged on the first-stage pressure oil way, an oil inlet of the oil pump displacement switching valve is correspondingly connected to an oil outlet of the first oil pump and an oil outlet of the second oil pump, and oil inlets of the active pressure control valve and the passive pressure control valve are connected to the first-stage pressure oil way. The invention further discloses an automatic transmission assembly and a vehicle. The stepless automatic transmission hydraulic control system aims at solving the technical problems that in the prior art, a stepless automatic transmission is low in transmission efficiency, large in gear shifting impact and large in pressure fluctuation.

Description

technical field [0001] The invention belongs to the field of continuously variable automatic transmission control, and in particular relates to an energy-saving hydraulic control system, an automatic transmission assembly and a vehicle. Background technique [0002] Since the advent of the automatic transmission in the early 20th century, through continuous optimization and upgrading, it has become an important component of the modern vehicle transmission system. Among them, the metal belt continuously variable transmission technology has matured in foreign countries, but the current domestic research and development technology level is temporarily It is in a backward state, especially the research and development ability of the hydraulic control system of the continuously variable automatic transmission has been at a low level, and the research and design ability of the metal belt continuously variable transmission hydraulic system is lacking. [0003] The existing metal be...

Claims

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Application Information

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IPC IPC(8): F16H61/40F16H61/02F16H57/04
CPCF16H57/0404F16H57/0412F16H57/0413F16H61/0265F16H61/40
Inventor 罗威卢志恒王刚李灿曾洪阳
Owner HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION LIMITED
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