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A Calculation Method for Straight-line Traction Characteristics of Transport Vehicles

A technology with straight-line driving and traction characteristics, applied in the direction of vehicle testing, measuring devices, instruments, etc., can solve problems such as inaccurate boundary conditions, oversimplified calculation models, and lack of optimization functions, so as to improve prediction accuracy and accurate boundary conditions Effect

Inactive Publication Date: 2017-10-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0002] The current steady-state performance calculation of direct driving is based on the matching of the steady-state engine and the torque converter, based on the simplified efficiency calculation method, and after deducting the single-parameter power output, the vehicle performance is initially calculated. Accurate, the calculation model is too simplified, and does not have the optimization function, only the preliminary calculation of the scheme is realized

Method used

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  • A Calculation Method for Straight-line Traction Characteristics of Transport Vehicles

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Embodiment Construction

[0012] In order to better illustrate the purpose and advantages of the present invention, the content of the invention will be further described below in conjunction with the accompanying drawings and examples.

[0013] A method for calculating traction characteristics of a transport vehicle traveling in a straight line disclosed in this embodiment includes the following steps:

[0014] Step 1: Comprehensively consider the power loss of transmission and action, the power consumption of the clutch of the control system working in oil due to wind resistance, the consumption of auxiliary devices driven by the transmission device, and the soil resistance coefficient under different road conditions, from the statistical probability of working conditions Angle establishes the relationship between the unit tractive force acting on a wheeled active wheel or tracked vehicle on a track meshed in solid soil and the engine's speed along a straight line in a steady state of external charact...

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Abstract

The invention discloses a calculation method for traction characteristics of straight-line running of a transport vehicle, relates to a calculation method for straight-line traction characteristics of vehicles, and belongs to the field of vehicle power calculation. The invention includes the following steps: Step 1: comprehensively consider various working conditions, and establish the relationship between the unit traction force and the straight-line speed of the engine under stable working conditions from the perspective of statistical probability of working conditions. Step 2: Use the relationship established in step 1 to establish the relationship between the unit traction force and the straight-line speed of the engine under steady working conditions, and calculate the traction force of the engine in each gear and the corresponding vehicle speed under different working conditions, and then evaluate the vehicle in a given working condition. The possibility of straight-line driving at a constant speed can be used to predict the steady-state performance of transport vehicles. The invention can be used for predicting the straight-line driving traction characteristics of mechanical or hydromechanical transmission piston engine wheeled or crawler vehicles.

Description

technical field [0001] The invention relates to a calculation method for traction characteristics of a vehicle traveling in a straight line, and belongs to the field of vehicle power calculation. Background technique [0002] The current steady-state performance calculation of direct driving is based on the matching of the steady-state engine and the torque converter, based on the simplified efficiency calculation method, and after deducting the single-parameter power output, the vehicle performance is initially calculated. Accurate, the calculation model is too simplified, and does not have an optimization function, and only realizes the preliminary calculation of the scheme. Contents of the invention [0003] The technical problem to be solved by the present invention is to establish the relationship between the traction force of the engine and the speed of the vehicle when it is running straight in a stable condition from the perspective of statistical probability of wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/007
Inventor 李多扬王军政邹天刚张金乐汪首坤陈光荣郭静毛飞鸿
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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