Patent · US Active

Exhaust post-treatment device and method for a vehicle, with a reductant vaporising surface being warmed by a Peltier element

US9062582B2 · kind B2 · utility

8Cited by

4References

12Claims

0Family size

Assignee

Scania CV AB · SE

Inventors

Peter Loman · Sollentuna, SE
Ola Hall · Stockholm, SE
Daniel Ryrfeldt · Åtvidaberg, SE

Key dates

Filing date	Oct 18, 2011
Grant date	Jun 23, 2015
Priority date	—
Expiry date	Jan 4, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/12
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

An exhaust post-treatment device (2) for a vehicle (4) for reducing nitrogen oxides present in the exhaust gases (20) of the vehicle (4) by supply of liquid reducing agent (18) to the exhaust gases (20) in an exhaust pipe (32). The device (2) locally warms a surface (31) within the exhaust pipe (32) by a Peltier element (6) by using thermal energy from the exhaust gases (20) to vaporize liquid reducing agent (18) which reaches the surface (31), thereby avoiding the formation of deposits of reducing agent within the exhaust pipe (32). Also a method for post-treatment of exhaust gases from vehicles with an exhaust post-treatment device (2) including a Peltier element (6).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.