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An engine and gearbox integral test device

An overall test and gearbox technology, which is applied in engine testing, machine gear/transmission mechanism testing, measuring devices, etc., and can solve problems such as multiple power levels, poor signal-to-noise ratio of torsional vibration signals, and complicated work.

Active Publication Date: 2017-09-05
CHINA NAT HEAVY DUTY TRUCK GRP HANGZHOU ENGINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the difficulties of torsional vibration testing are mainly manifested in the following three aspects: (1) The installation, protection and signal transmission requirements of sensors are high, and the corresponding work is also complicated; (2) The signal-to-noise ratio of torsional vibration signals is very poor, coupled with the The interference of vibration, lateral vibration and rolling vibration makes the extraction and analysis of torsional vibration signals more difficult; (3) There are many types of engines and many power levels, and it is difficult to realize product serialization, modularization and generalization of test equipment

Method used

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  • An engine and gearbox integral test device
  • An engine and gearbox integral test device
  • An engine and gearbox integral test device

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as Figure 1-9 As shown, the present invention is a kind of engine and gearbox integral test device, comprises base, and base is provided with engine bracket 2 and gearbox bracket 3, and the middle section of engine bracket 2 is provided with engine damping block 1; Engine 13 assembled together The gearbox 12 is set on the engine bracket 2 and the gearbox bracket 3, and the output shaft of the gearbox 12 is sequentially connected with the gearbox and the engine positioning fixed coupling disc 6, the engine end gear disc 7, the elastic coupling transition disc 8, the elastic Coupling 9, dynamometer end sprocket 10, dynamometer end connecting flange 14; engine 13, gearbox 12, gearbox and engine positioning fixed coupling disc 6, engine end sprocket 7, elastic coupling transition Connecting plate 8, elastic coupling 9, dynamometer end sprocket 10, and dynamometer end connecting flange 14 are provided with a protective cover 4 for testing. The protective cover 4 for te...

Embodiment 2

[0034] The difference from Embodiment 1 includes that the sensor adjustment and positioning device is adjusted and fixed with the test shield bolts, and can move axially along the transmission system.

[0035]The difference from Embodiment 1 also includes that this technical solution is to connect the engine and the gearbox as the overall test target, using torsional vibration test equipment, using magnetoelectric sensors, and then arranging the engine end gear plate and dynamometer before and after the elastic coupling The gear plate at the machine end measures the position voltage signal, and obtains the change curve of the torsional angular acceleration of different position grades with the engine speed through differential calculation, and measures the angular acceleration of the input shaft and output shaft of the engine flywheel and gearbox in different gears. Engine speed change curve; use the original position of the engine to measure the position and voltage signals of...

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Abstract

The invention discloses an overall test device for an engine and a gearbox, which comprises an engine bracket and a gearbox bracket. The assembled engine and gearbox are arranged on the engine bracket and the gearbox bracket, and the output shaft of the gearbox is sequentially connected to the gearbox. Position and fix the coupling plate with the engine, the engine end sprocket, the elastic coupling transition plate, the elastic coupling, the dynamometer end sprocket, and the dynamometer end connecting flange; the outer side is equipped with a protective cover for testing, and the protective cover for testing The cover corresponds to the position of the starting ring gear of the engine flywheel, the position of the gearbox input shaft gear and the constant meshing gear of the gearbox output shaft, the engine end sprocket, and the dynamometer end sprocket are each equipped with sensor adjustment and positioning devices, and the protective cover for testing is equipped with sound insulation piece. The beneficial effects of this scheme can be known from the description of the above scheme. The structure is simple, the design is reasonable, it is an independent whole, it is suitable for all kinds of engines, it is universal and practical, and it is suitable for popularization and application.

Description

technical field [0001] The invention relates to a test device for a vehicle transmission system, in particular to an integral test device for an engine and a gearbox. Background technique [0002] Vehicle powertrain testing not only tests the transmitted power, but also factors such as vibration. The bending vibration of the vehicle transmission system has an important influence on the vibration and noise of the vehicle in a wide range of frequencies. The rigid body vibration in the low frequency range directly affects the ride comfort of the vehicle, while the elastic vibration in the high frequency range will It will cause structural resonance and acoustic resonance of the vehicle. Bending vibration is caused by the reciprocating inertial force of the moving parts of the engine, the unbalance of the transmission shaft, etc. The bending and torsional vibration of the power train is coupled at the drive axle final drive. Only a small part of research in this area can esta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/02G01M15/00
Inventor 陈超平李红珍李建明郭磊赵燕燕皇甫伟洋
Owner CHINA NAT HEAVY DUTY TRUCK GRP HANGZHOU ENGINE