Transmission lubricating system and method suitable for hybrid electric vehicle

A hybrid electric vehicle and lubrication system technology, applied in the direction of gear lubrication/cooling, etc., can solve the problems of energy-saving precision control, large volume, heavy weight, and lack of feedback

Active Publication Date: 2016-07-27
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, such a lubrication system lacks the necessary monitoring of system flow and oil temperature, and lacks the feedback of system control, which is not conducive to ensuring the reliability of the lubrication system
That is to say, the existing lubrication system has the disadvantages of large volume, heavy weight, insufficient reliability, and the inability to achieve precise control of energy saving

Method used

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  • Transmission lubricating system and method suitable for hybrid electric vehicle
  • Transmission lubricating system and method suitable for hybrid electric vehicle
  • Transmission lubricating system and method suitable for hybrid electric vehicle

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Embodiment Construction

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0031] In the descr...

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Abstract

The invention discloses a transmission lubricating system suitable for a hybrid electric vehicle. The system comprises a transmission, lubricating oil, an electric pump, a controller and a mechanical pump. The lubricating oil is accommodated in the transmission. The electric pump is communicated with the bottom and the top of the transmission. The controller is connected with the electric pump for controlling the electric pump to suck out the lubricating oil from the bottom of the transmission for pressurizing and spraying the lubricating oil to the top of the transmission to lubricate the transmission. The mechanical pump is communicated with the bottom and the top of the transmission. The mechanical pump is connected with an engine of the vehicle for starting along with the engine to suck out the lubricating oil from the bottom of the transmission for pressurizing and spraying the lubricating oil from the top of the transmission to lubricate the transmission. Even if a driving force transfer path of a driving motor and a power transmission path of the engine both work in a high-speed area with low speed and high torque, the transmission lubricating system can satisfy the lubricating demands. The invention further discloses a transmission lubricating method suitable for the hybrid electric vehicle.

Description

technical field [0001] The invention relates to automobile technology, in particular to a gearbox lubrication system and method suitable for hybrid electric vehicles. Background technique [0002] An existing gearbox lubrication system uses an electric pump to establish oil pressure, and the motor controller controls the motor of the electric pump to execute the set lubrication strategy, that is, the speed of the motor is controlled according to the current gear position and vehicle speed signal to adjust the electric pump. The injection volume of the oil pump. Compared with the traditional splash lubrication that relies on the centrifugal force of gear rotation to provide lubrication power and the mechanical pump directly connected to the gear shaft for oil injection lubrication, this system solves the problem of poor lubrication of the gearbox under low-speed and high-torque conditions. The ability to regulate independently of the gearbox speed also allows such a system t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H57/04
Inventor 阮鸥陈昊王品李玲玲黄鹏
Owner BYD CO LTD
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