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Development of the Hydraulically Actuated Electronically Controlled Unit Injector for Diesel Engines
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English
Abstract
The key design factors of an Hydraulically actuated Electronically controlled Unit Injector (HEUI) which determine its injection rate, pressure, energy efficiency and accuracy of fuel delivery, and the correlations between these design factors and performance parameters, have been established. Two methods of fuel metering within an HEUI are compared in terms of injection accuracy, reliability and controllability. An HEUI design guidelines are outlined.
The test results of latest HEUI developed for diesel engines with displacement 1-2.2 litre/cyl. are shown. It provides high injection pressure, rate and accuracy, low energy consumption, unusually wide range of fuel deliveries and readily fits into existing engines.
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Citation
Yudanov, S., "Development of the Hydraulically Actuated Electronically Controlled Unit Injector for Diesel Engines," SAE Technical Paper 952057, 1995, https://doi.org/10.4271/952057.Also In
Diesel Engine Combustion and Emissions From Fuel to Exhaust Aftertreatment
Number: SP-1113; Published: 1995-09-01
Number: SP-1113; Published: 1995-09-01
References
- Yudanov S.V. “The Performance Improvement of the Automotive Turbocharged Diesel Engine by the Use of Electronically Controlled Unit Injector” Moscow, Russia 1992
- Meints E.G. Stockner A.R. “Actuator and Valve Assembly for a Hydraulically-Actuated Electronically Controlled Unit Injector” 1991
- James J.G. “Two-Stage Hydraulic Electrically-Controlled Unit Injector” 1992
- Khachiyan A.S. Desyatun S.V. Yudanov S.V. “Electronic Control of Fuel Injection in Diesel Engine” Proceedings of V National Scientific Conference with International Participation 595 604 Varna, Bulgaria 1989
- Bashkin A. V. Desyatun S.V. et al. “Fuel Injection System for IC Engine” Moscow 1988
- Khachiyan A.S. Desyatun S.V. Yudanov S.V. “Investigation of the Injection Process of the Electronically Controlled Hydraulically Actuated Unit Injectors” Proceedings of the Moscow Automotive and Road Construction Institute 72 76 Moscow 1988