Exhaust gas after treatment system with temperature control

A technology of exhaust aftertreatment and emission control system, which is applied in exhaust treatment, exhaust device, air quality improvement, etc., and can solve problems such as SCR failure
CN102449280AInactive Publication Date: 2012-05-09VOLVO TRUCK CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
VOLVO TRUCK CORP
Publication Date
2012-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

Disclosed herein is a vehicle emission control system (300) configured to operatively receive exhaust gas from a combustion engine (110) and comprising an EATS (120) configured to operatively clean the received exhaust gas, a burner unit (130) configured to operatively heat the received exhaust gas to a predetermined temperature before the exhaust gas is provided to the exhaust gas after treatment system (120), and a pump unit (140) configured to operatively provide the burner unit (130) with air to be used by the burner unit (130) in a heating process. The pump unit (140) is configured to be operatively propelled by exhaust gas, and the burner unit (130) is arranged upstream the pump unit (140) such that exhaust gas from the burner unit (130) is operatively provided to the pump unit (140) for propelling the pump unit (140).
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Description

technical field

[0001] The present invention relates to an arrangement and method for controlling the temperature of exhaust gas from a combustion engine prior to providing the exhaust gas to an exhaust aftertreatment system for cleaning. Background technique

[0002] Current emission control regulations for automobiles will typically require the use of exhaust aftertreatment systems (EATS) that include various emission cleaning units. Therefore, most modern automobiles, at least heavy duty vehicles, utilize EATS to clean the exhaust of the vehicle engine. Emission cleaning units of EATS may be, for example, various catalysts capable of converting carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOx) produced during vehicle engine operation. Other emission cleaning units may be various filters, such as particulate filters designed to remove certain substances or soot, etc., from exhaust gas or the like.

[0003] Vehicles equipped with diesel engines offer the b...

Claims

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