Catalyst air supplement equipment for SBC circulation and control system thereof

A technology of control system and catalytic converter, which is applied in the direction of mechanical equipment, electric control of exhaust treatment devices, exhaust treatment, etc., and can solve the problems of low repeatability of air supply and large difference in air-fuel ratio

Active Publication Date: 2016-03-30
BEIJING CATARC AUTOMOBILE DETECTION TECH CENT
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Problems solved by technology

[0005] The object of the present invention is to provide a catalytic converter air supply equipment and its control system for SBC circulation, to solve the problem that the existing open-loop control method easily leads to low repeatability of the air supply amount per cycle in the air supply control system, And there is a big difference between the actual air-fuel ratio and the air-fuel ratio required by the standard regulations

Method used

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Embodiment Construction

[0038] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention discloses catalyst air supplement equipment for SBC circulation and a control system thereof, belonging to the technical field of standard bench circulation of light cars, and aiming at solving the problems that under the open-loop control mode, the repeatability of air supplement amount per cycle is low, and the actual air-fuel ratio is very different from the standard air-fuel ratio. The catalyst air supplement equipment comprises a first electromagnetic valve, a first manual pressure regulating valve, a first air storage tank, a second manual pressure regulating valve, a second air storage tank, a pressure indicator, a flow indicator, a quality flow controller and a second electromagnetic valve, which are connected between a compressed air source and a catalyst successively through pipelines. An air flow control device comprises a pressure indicator, a temperature indicator, a flow indicator and a quality flow controller and can control the air output flow and correct the air output flow according to the pressure and temperature. The catalyst air supplement equipment is mainly applied to the standard bench circulation of a light car engine.

Description

technical field [0001] The invention relates to the technical field of standard bench cycle (SBC for short) of light-duty vehicles, in particular to a catalytic converter air supply device and a control system for the SBC cycle. Background technique [0002] At present, according to the requirements of the national standard GB18352.5-2013 "Light Vehicle Pollutant Emission Limits and Measurement Methods (China's Fifth Stage)", the SBC cycle (that is, the standard bench cycle) can be used to age the catalytic converter; the actual operation At this time, according to the standard requirements, a certain amount of air (oxygen) can be periodically provided to the catalytic converter to complete the operation. [0003] Specifically, the catalytic converter gas supplement control system used in the SBC cycle in the prior art usually controls the on-off time of the corresponding switch valve in each cycle to control the supplementary gas amount of air (oxygen). No longer change, c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/30F01N9/00
CPCF01N3/30F01N9/00F01N2610/06Y02A50/20Y02T10/40
Inventor 于津涛肖广宇李昂
Owner BEIJING CATARC AUTOMOBILE DETECTION TECH CENT
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