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Exhaust treatment secondary air supply system

A technology of exhaust treatment and treatment system, which is applied in the direction of exhaust treatment, diagnosis device of exhaust treatment device, exhaust device, etc., and can solve the problem of not providing electronic engine controller, etc.

Inactive Publication Date: 2014-11-26
TENNECO AUTOMOTIVE OPERATING CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, many of these same vehicles have relatively simple engine and drivetrain arrangements in which no electronic engine controllers are provided

Method used

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  • Exhaust treatment secondary air supply system
  • Exhaust treatment secondary air supply system

Examples

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Embodiment Construction

[0014] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0015] refer to figure 1 , the exemplary vehicle 10 is equipped with an engine 12 and an exhaust system 16 . The exhaust system 16 includes an exhaust manifold 18 , a diesel particulate filter 20 , and a regeneration unit 22 . Exhaust conduit 24 internalizes exhaust manifold 18 and regeneration unit 22 . Tailpipe 26 includes one end that receives gases passing through diesel particulate filter 20 and an opposite open end that allows treated exhaust to exit the exhaust port.

[0016] The exhaust system 16 also includes an air pump 30 that provides a supply of secondary air to an inlet 32 ​​of the regeneration unit 22 . The air pump 30 is drivingly coupled to the engine 12 by a resilient drive member 34 such as a belt or chain. Alternatively, any other power transmission device such as a pinion train may be used to drive the air pump 30 by the engine 12 . A speed senso...

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PUM

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Abstract

A system for treating the exhaust output by an internal combustion engine includes a regeneration positioned upstream from a diesel particulate filter. The regeneration unit combusts a fuel to heat the exhaust entering the diesel particulate filter. An air pump supplies a secondary source of compressed air to the regeneration unit and is adapted to be driven by the internal combustion engine. A speed sensor is coupled to the air pump and operable to output a signal indicative of a rotational speed of an air pump component. A controller receives the speed sensor signal and determines an operating speed of the internal combustion engine based on the speed sensor signal. The controller controls the regeneration unit based on the engine operating speed.

Description

technical field [0001] The present disclosure generally relates to exhaust treatment systems. More specifically, the secondary air system includes an air pump and an associated speed sensor for managing the operation of a regeneration unit located upstream of the diesel particulate filter. Background technique [0002] This section provides background information related to the present disclosure which is not necessarily prior art. [0003] Many personal and commercial vehicles are constructed with an internal combustion engine for transmitting power to the driven wheels of the vehicle. Older vehicles may be equipped with exhaust systems that may not meet current government regulatory standards or standards to be enforced. These vehicles may comply with emission control regulations when new but in the future these vehicles may need to be changed in order to be legally operated. [0004] In one example, a commercial vehicle such as a bus may be equipped with a diesel fuele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/023F01N3/025F01N3/029
CPCF01N11/00F01N2550/14F02D41/0097F01N3/025F01N3/326
Inventor 加里·布茨克
Owner TENNECO AUTOMOTIVE OPERATING CO INC