Evaluation method for evaluating hill-start performance of vehicle

Abstract

The invention discloses an evaluation method for evaluating the hill-start performance of a vehicle and belongs to the technical field of vehicles. The method comprises the following steps of 1, parking a vehicle on a ramp at the gradient of n% when the vehicle is in the maximum total mass state, and keeping the parking state of the vehicle; 2, driving the vehicle to carry out the hill starting process by a driver, and keeping the parking state of the vehicle after the hill starting process of the vehicle is carried over a certain distance; 3, repeating the step 2, and carrying out hill starting processes for at least two times; 4, judging the state completion condition of each hill starting process; 5, evaluating and judging whether bad phenomena occur during the hill starting process of the vehicle or not, wherein the bad phenomena are composed of abnormal sound, abnormal smell, engine stall, wheel trackslip, reverse execution and the like. Therefore, the hill-start performance of the vehicle can be evaluated. Based on the evaluation method for evaluating the hill-start performance of the vehicle, the problem that no related evaluation method is available for evaluating the hill-start performances of vehicles in the prior art can be solved. As a result, the design personnel and users can evaluate the hill-start performances of vehicles.

Description

technical field [0001] The invention relates to an evaluation method for a car starting on a slope, and belongs to the technical field of cars. Background technique [0002] As far as the applicant knows, the car ramp belongs to the category of car longitudinal dynamic performance. In the past, car designers paid more attention to the ability of the car to pass through the road with a certain slope at full throttle at a certain speed in this field. In actual use, drivers often encounter the working condition of restarting after frequent parking on steep roads. [0003] So far, there is a lack of research and evaluation methods for cars starting on slopes in China. For example, GB / T12539 "Test Method for Cars Climbing Steep Slopes" only proposes that off-road vehicles stop on slopes for 2 minutes before starting to climb. There is no requirement for non-off-road vehicles, and there is no clear evaluation method for off-road vehicles' restarting and climbing. The absence of...

AI Technical Summary

Problems solved by technology

The invention provides an evaluation method for a car starting on a hill, which can solve the problem that there is no relevant evaluation method for the car starting on a hill, and is convenient for designers and users to evaluate the performance of the car on a hill.

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