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Powertrain Layout Method and Structure of Long Wheelbase Four-Wheel Drive Vehicle

An automotive powertrain and four-wheel drive technology, applied in power units, control devices, vehicle components, etc., can solve the problem of large dynamic load bending moment, large alternating variable load stress, and three Shell fatigue fracture and other problems, to achieve the effect of reducing the dynamic load bending moment and alternating variable load stress amplitude, reducing the alternating variable load stress and improving the stiffness

Inactive Publication Date: 2015-11-11
NANJING TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing four-wheel-drive vehicle power assembly adopts a single rigid connection and then is suspended on the vehicle frame, causing the cantilever to be too long, resulting in low system stiffness, and the dynamic load borne by the joint between the rear case of the transmission and the transition plate. In order to solve the problems of large bending moment, large alternating load stress range, and easy fatigue damage, a powertrain layout method for long-wheelbase four-wheel drive vehicles is invented, and a corresponding layout structure is provided to improve the performance of four-wheel drive vehicles. Use reliability and comfort, especially to solve the powertrain vibration and three-shell fatigue fracture phenomenon that occur in the powertrain connection and suspension arrangement of traditional four-wheel drive vehicles

Method used

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  • Powertrain Layout Method and Structure of Long Wheelbase Four-Wheel Drive Vehicle
  • Powertrain Layout Method and Structure of Long Wheelbase Four-Wheel Drive Vehicle
  • Powertrain Layout Method and Structure of Long Wheelbase Four-Wheel Drive Vehicle

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Embodiment 1

[0027] Such as figure 1 , 3 shown.

[0028] A powertrain arrangement method for a long-wheelbase four-wheel-drive vehicle. First, the engine casing with the engine mounted thereon is suspended on the vehicle frame through at least two points, and the two suspension points should be symmetrically distributed on both sides of the casing. At the same time, rigidly connect the engine casing to the front casing of the transmission, and rigidly connect the rear casing to the front casing of the transmission; secondly, suspend the transmission rigidly connected to the front and rear casings on the frame; thirdly, connect the rear casing of the transmission Flexible connection directly with the front case of the transfer case (a flexible connection can be formed by adding a rubber elastic bushing between the bolt and the mounting hole or other conventional connection methods, this connection method is actually a semi-rigid and semi-flexible connection ), and suspend the front case ...

Embodiment 2

[0030] Such as figure 1 , 3 shown.

[0031] A long-wheelbase four-wheel-drive vehicle powertrain layout structure, which includes an engine housing 1 with an engine installed, a transmission front housing 2 and a transmission rear housing 3, and a transfer case front housing with a transition plate 4 installed. Case 5 and transfer case rear case 6. The engine case 1 is suspended on the vehicle frame at least through two suspension points symmetrically arranged on both sides of the engine case. The engine case 1 and the front case 2 of the transmission One end is rigidly connected by a bolt 7, and the other end of the transmission front case 2 and one end of the transmission rear case 3 are rigidly connected by a bolt 8. After the rigid connection, the transmission front case 2 and the transmission rear case 3 are suspended on a suspension of the vehicle frame. point (finally located at one end close to the front case 5 of the transfer case, such as figure 1 ), at least tw...

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Abstract

Disclosed is an arrangement method and structure of a power assembly for a long-wheelbase four-wheel-drive automobile. The structure is characterized by comprising a power assembly suspension system, a power assembly three-shell block connection, and a transmission shaft connection. The power assembly suspension system comprises an engine left suspension, an engine right suspension, a transmission suspension, a transfer case front suspension and a transfer case rear suspension. The power assembly three-shell block connection is characterized in that an engine housing is rigidly connected with a transmission front shell through bolts; the transmission front shell is rigidly connected with a transmission rear shell through bolts; the transmission rear shell is flexibly connected with a transition plate through a rubber elastic bushing added between the bolts and mounting holes; the transition plate is rigidly connected with a transfer case through bolts; a transfer case front shell is rigidly connected with a transfer case rear shell through bolts. The structure has the advantages that vibration reduction and noise reduction are simultaneous, the change range of the amplitude of stress borne by the power assembly three-shell can be reduced greatly, chances for fatigue breakage of the three-shell are slimmed, and vehicles can be comfortable and reliable to use.

Description

technical field [0001] The present invention relates to a kind of automobile technology, especially a kind of power assembly layout technology, in particular, it is suitable for the three shells of the power assembly connected by the transition plate or the power assembly with a long span due to the installation of the transfer case. The powertrain arrangement method and structure of four-wheel drive vehicles (especially medium-sized four-wheel drive passenger vehicles and trucks). Background technique [0002] Such as figure 2 As shown, the traditional four-wheel drive vehicle powertrain connection and suspension layout scheme does not include the transfer case front suspension, and all shells are rigidly connected by bolts, and all drive shaft connections are rigidly connected. Flange coupling. The engine, transmission, transition plate and transfer case are integrated into a single rigid body. Due to the excessively long cantilever of the transition plate and transfer c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K5/12B60K17/06B60K17/344
Inventor 李明轩苏小平孙后环陈宇晖张才伟
Owner NANJING TECH UNIV
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