Method for testing noises of hybrid power automobile

A hybrid vehicle and noise testing technology, applied in measurement devices, measuring ultrasonic/sonic/infrasonic waves, and using inertial force for acceleration measurement, etc., can solve the problems of difficult test analysis methods, inability to directly track the engine speed signal, etc., to shorten the measurement time. Period, the effect of reducing difficulty

Inactive Publication Date: 2015-12-02
CHANGZHOU INST OF MECHATRONIC TECH
View PDF8 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to improve energy efficiency as much as possible in hybrid vehicles, the engine is usually turned off under low-speed conditions, so it is impossible to directly track the engine speed signal to analyze the noise spectrum in the vehicle, which brings certain difficulties to traditional test and analysis methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments.

[0023] A noise testing method for an electric hybrid vehicle, comprising the following steps:

[0024] a) Select the model of the hybrid system as the test object: connect the generator, motor and engine through the planetary gear mechanism;

[0025] b) Measure vibration acceleration:

[0026] Use a 24-channel magnetic head recorder to measure the vibration acceleration of the engine, transmission, front and co-pilot;

[0027] c) Measure the noise signal:

[0028] Use a 24-channel magnetic head recorder to measure the noise signals of the left front wheel, the outside of the roof of the driving car, the outside of the exhaust port, the transmission and the engine;

[0029] d) Use the Prius fault diagnosis instrument to measure the rotation speed of the generator and the motor;

[0030] e) Use ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention discloses a method for testing noises of a hybrid power automobile. The method includes the steps as follows: a) selecting an automobile of a series-parallel type hybrid power automobile system as an object to be tested; b) measuring vibration accelerations: measuring vibration accelerations of an engine, a transmission, and a primary driver seat and a secondary driver seat through a 24-channel magnetic head recorder; c) measuring noise signals: measuring noise signals of a front left wheel, the outside of an automobile top of the primary driver seat, the outside of an exhausting port, the transmission and the engine; d) measuring revolving speeds of a generator and a motor by employing a Prius fault diagnosis apparatus; e) recording noise signals of positions corresponding to double ears of a primary driver, a position corresponding to a right ear of the secondary driver, and a position corresponding to a right ear of a passenger behind the primary driver; f) and performing a noise spectral analysis inside the automobile according to measurement data acquired from steps b) - e). The method can accurately confirm a noise excitation source and shorten a measurement period.

Description

technical field [0001] The invention relates to a noise testing method of an electric hybrid vehicle, which belongs to the technical field of noise measurement. Background technique [0002] During the normal operation of hybrid electric vehicles, the power source needs to be switched frequently, which indirectly produces frequent impact vibration noise. For traditional internal combustion engine vehicles, we can usually capture obvious order information in noise samples (such as 2, 4, 6, and 8th order noise of a 4-cylinder 4-stroke engine). However, in order to improve energy efficiency as much as possible in hybrid vehicles, the engine is usually turned off under low-speed conditions, so it is impossible to directly track the engine speed signal to analyze the noise spectrum in the vehicle, which brings certain difficulties to traditional test and analysis methods . Contents of the invention [0003] The technical problem solved by the invention is to overcome the defi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G01P15/09
Inventor 张红党倪明明李彦杨宏图陈福贞王峰
Owner CHANGZHOU INST OF MECHATRONIC TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap