Accession Number:

ADA279176

Title:

Advanced Diesel Electronic Fuel Injection and Turbocharging

Descriptive Note:

Final rept. Jul 1990-Dec 1993

Corporate Author:

BKM INC SAN DIEGO CA

Report Date:

1993-12-01

Pagination or Media Count:

227.0

Abstract:

The program investigated advanced diesel air charging and fuel injection systems to improve specific power, fuel economy, noise, exhaust emissions, and cold startability. The techniques explored included variable fuel injection rate shaping, variable injection timing, full-authority electronic engine control, turbo-compound cooling, regenerative air circulation as a cold start aid, and variable geometry turbocharging. A Servojet electronic fuel injection system was designed and manufactured for the Cummins VTA-903 engine. A special Servojet twin turbocharger exhaust system was also installed. A series of high speed combustion flame photos was taken using the single cylinder optical engine at Michigan Technological University. Various fuel injection rate shapes and nozzle configurations were evaluated. Single-cylinder bench tests were performed to evaluate regenerative inlet air heating techniques as an aid to cold starting. An exhaust-driven axial cooling air fan was manufactured and tested on the VTA-903 engine. Electronic fuel injection, Turbocharging, Diesel combustion, Cold starting, Flame photography.

Subject Categories:

  • Reciprocating and Rotating Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE