skip to main content

Title: Diesel catalysts for Europe beyond 1996

Catalytic converters on European diesel cars must operate under conditions ranging from very low temperature during city driving to high temperature during Autobahn driving. This article describes development of new catalyst technology for European applications. This requires simultaneous achievement of properties that have long been considered incompatible. Increased concern about global warming due to CO{sub 2} emissions, and demands for improved fuel economy, make the high thermal efficiency of diesel engines of growing interest on the European car scene. Some major disadvantages such as low specific power output (kW/L displacement), noise, smell, smoke, and NOx emissions are traditionally associated with the diesel engine. Clearly justified in the past, some of these objections have largely lost their validity due to recent development of advanced combustion systems. Better control of fuel injection (precision, accuracy, and repeatability), robust design of combustion chamber geometry, and optimized intake-channel design for improved air motion (swirl) serve as examples of innovative engine-design improvements, with which injection timing, EGR, and turbocharger control strategies have been engineered to yield impressive improvements in terms of performance, fuel economy, and engine-out emissions.
Publication Date:
OSTI Identifier:
124477
Resource Type:
Journal Article
Resource Relation:
Journal Name: Automotive Engineering; Journal Volume: 103; Journal Issue: 10; Other Information: PBD: Oct 1995
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; CATALYTIC CONVERTERS; CATALYSTS; DIESEL ENGINES; NITROGEN OXIDES; CARBON MONOXIDE; HYDROCARBONS; AIR POLLUTION CONTROL