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New-energy automobile vacuum assistance system vacuum leakage alarm strategy

A new energy vehicle, vacuum boosting technology, applied in the direction of brake safety system, etc., can solve the problems of increasing vacuum pump damage, increasing vehicle power consumption, increasing the working frequency of vacuum pump, etc., to achieve the effect of reducing losses and making small changes

Inactive Publication Date: 2019-03-29
NANJING JINLONG NEW ENERGY AUTOMOBILE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] This phenomenon will obviously increase the working frequency of the vacuum pump, increase the probability of damage to the vacuum pump, increase the power consumption of the vehicle for no reason, and cover up the leakage of the vacuum system

Method used

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  • New-energy automobile vacuum assistance system vacuum leakage alarm strategy
  • New-energy automobile vacuum assistance system vacuum leakage alarm strategy

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] Please refer to figure 2 As shown, the vacuum leakage alarm strategy of the new energy vehicle vacuum booster system of the present invention includes the following steps:

[0034] (1) The brake pedal inputs the brake action to the system;

[0035] (2) After receiving the brake action input, the vacuum booster uses the vacuum stored in the vacuum tank to provide assistance to the brake action;

[0036] (3) The vacuum tank stores the vacuum and releases the vacuum to the vacuum booster;

[0037] (4) The vacuum pump starts vacuuming after receiving the start-up command from the negative pressure sensor, and delivers vacuum to the vacuum tank;

[0038] (5) The negative pressure sensor provides start and stop signals to the vacuum pump by monitoring the vacuum degree of the vacuum tank according to the set upper and lower working limits;

[0039] (6), increase ...

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Abstract

The invention discloses a new-energy automobile vacuum assistance system vacuum leakage alarm strategy. A vacuum assistance system is modified slightly, a common vehicle can be provided with a brake pedal switch, only a control strategy needs to be added to a VCU, the vacuum system leakage fault is monitored in time, a driver is reminded, and loss is reduced.

Description

Technical field: [0001] The invention relates to a vacuum leakage alarm strategy for a vacuum booster system of a new energy vehicle, which belongs to the technical field of new energy vehicles. Background technique: [0002] Such as figure 1 As shown, it is the vacuum failure monitoring system of the existing vacuum booster system, and the working principle of the vacuum booster system is as follows: [0003] (1) The brake pedal inputs the brake action to the system; [0004] (2) After receiving the brake action input, the vacuum booster uses the vacuum stored in the vacuum tank to provide assistance to the brake action; [0005] (3) The vacuum tank stores the vacuum and releases the vacuum to the vacuum booster; [0006] (4) The vacuum pump starts vacuuming after receiving the start-up command from the negative pressure sensor, and delivers vacuum to the vacuum tank; [0007] (5) The negative pressure sensor provides start and stop signals to the vacuum pump by monitor...

Claims

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Application Information

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IPC IPC(8): B60T17/22
CPCB60T17/22
Inventor 黄超
Owner NANJING JINLONG NEW ENERGY AUTOMOBILE RES INST