Cooling system for automatic transmission

Abstract

The invention discloses a cooling system for an automatic transmission. The automatic transmission comprises a main transmission casing and an oil cooler; the main transmission casing comprises an output shaft casing and a transmission shaft casing; the oil cooler is arranged above the rear side of the output shaft casing, and is close to the position of the transmission shaft casing; a metal oilinlet pipe is arranged in the main transmission casing; an oil inlet end of the metal oil inlet pipe communicates with a valve plate; an oil outlet of the metal oil inlet pipe communicates with the oil cooler; a metal oil outlet pipe is arranged in the main transmission casing; an oil inlet of the metal oil outlet pipe communicates with the oil cooler; an oil outlet of the metal oil outlet pipe communicates with a total lubricating oil inlet of an intermediate baffle; and the oil leakage of the transmission due to the external oil path and the thermal expansion and contraction of an external metal pipe are avoided, the problem of insufficient space for the oil cooler and an entire vehicle fan in the layout aspect of an entire vehicle is solved, the external dimension of the whole transmission is reduced, and the matched layout is facilitated. In the packaging and transportation process of the transmission, the new layout design is more conducive to the transportation of the transmission, so as to prevent the bumps generated during the transportation from causing the deformation of the oil cooler or the deformation of the oil pipe.

Description

technical field [0001] The invention belongs to the technical field of automatic transmissions, and in particular relates to a cooling system for automatic transmissions. Background technique [0002] Automatic transmissions are generally equipped with a cooling system to cool all parts of the machine. The usual cooling system consists of three parts, valve plate pressure starting point, transmission oil circuit system and oil cooler. [0003] Traditional cooling systems such as figure 1 , figure 2 As shown, when the transmission is working, the high-temperature ATF oil will enter the rubber oil inlet pipe 5 from the transmission main casing 6 through the oil pipe joint 4 at a pressure of up to 3 bar, and then enter the oil cooler 1. After being cooled by the oil cooler 1, it will flow from the rubber The oil outlet pipe 2 enters the transmission main casing 6 after passing through the oil pipe joint 4, thereby entering the cooling system of the complete transmission. ...

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Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that the prior art has at least the following disadvantages: the existing cooling system is connected to the oil cooler and the transmission through an external rubber oil pipe, and as time increases, the rubber will be affected by the external environment (high temperature, Fatigue and aging due to extreme cold and dust), the clamping part of the clamp 3 at the interface is easy to break, which will further increase the risk of oil leakage

[0007] In addition, the position of the oil cooler is also an important aspect. The traditional oil cooler 1 is installed on the oil pan 9 on the side of the transmission. The front (left side) of the oil cooler 1 is where the vehicle fan is installed. The gap is generally about 60mm, and the position is small, which is not conducive to the layout requirements

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