Heat exhanger for SOx or NOx regeneration of catalyst
AssigneeVolvo Personvagnar AB
InventorsStaffan Lundgren, Jacob Claesson, Maria Hansson, Lars Sandberg, Mikael Larsson
Life of this patent
Estimating the term…
Abstract
A device for use with a lean-burning internal combustion engine is disclosed. The device is comprised of a means for generating an air/fuel mixture for the cylinders of the engine in order to provide at least stratified and homogenous operation, an exhaust system connected to the engine, and an NOX-adsorbing catalytic converter arranged in the exhaust system. The device additionally has a heat exchanger that is fitted upstream of the catalytic converter, wherein the heat exchanger is used to adapt the temperature of the exhaust gas from the engine to an operating state of the catalytic converter.
Claims10
A device for use with an internal combustion engine of a lean-burn type, comprising:
- means for generating an air/fuel mixture for the cylinders of the engine in order to provide at least stratified and homogenous operation,
- an exhaust system connected to the engine,
- and an NOX-adsorbing catalytic converter arranged in the exhaust system, further comprising a heat exchanger that is fitted upstream of said catalytic converter, wherein said heat exchanger is used to adapt the temperature of the exhaust gas from said engine to an operating state of said catalytic converter.
A device for use with an internal combustion engine of a lean-burn type, comprising:
- a control system for generating an air/fuel mixture for the cylinders of the engine in order to provide at least stratified and homogenous operation,
- an exhaust system connected to the engine,
- and an NOX-adsorbing catalytic converter arranged in the exhaust system, further comprising a heat exchanger that is fitted upstream of said catalytic converter, wherein said heat exchanger is used to adapt the temperature of the exhaust gas from said engine to an operating state of said catalytic converter.
Dependencies are inferred from the claim text.