Diesel engine emissions: A timing control approach

Conference · Thu Jan 01 00:00:00 EST 1987

OSTI ID:5033790

Henderson, P T; Wells, D; Haddox, M

Growing demands are being placed on the diesel engine industry to lower emission levels. A key ingredient in emissions reduction is precise injection pump to engine timing control. This paper outlines a unique approach to dynamically time an injection pump to an engine during its initial test cycle while developing the ability to repeat the timing function using the same methodology during the life of the engine. This innovative concept consists of the placement of a piezoelectric sensor in the high pressure tubing path at the injector inlet. Coupled with a device which employs microwave sensing of relative piston position, exact dynamic timing can be accomplished. The sensor output not only provides the initial timing reference, but also a consistent reference for the engine's diagnostic needs. The output can also be used as a tach drive or provide input to an electronically controlled injection system.

• OSTI ID: 5033790
• Report Number(s): CONF-8709177-
• Resource Relation: Conference: International off-highway and powerplant congress and exposition, Milwaukee, WI, USA, 14 Sep 1987; Other Information: Technical Paper 871630
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
CONTROL SYSTEMS
DESIGN
ELECTRONIC CIRCUITS
EMISSION
EXHAUST GASES
PERFORMANCE TESTING
HIGH PRESSURE
PIEZOMETRY
PUMPS
ENGINES
FLUIDS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
TESTING
WASTES
330102* - Internal Combustion Engines- Diesel
330700 - Advanced Propulsion Systems- Emission Control
330603 - Vehicle Design Factors- Engine System