Meeting the Customer's Needs - Defining the Next Generation Electronically Controlled Unit Injector Concept for Heavy Duty Diesel Engines

Gibson, D. H.; Shinogle, Ronald D.; Moncelle, Michael E.

doi:10.4271/961285

Cited by 10 publications

(2 citation statements)

References 21 publications

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“…All new diesel engines of vehicles in China are required to comply with China's new emission laws. Although the use of electronic controlled fuel injection systems including electronic unit injector, [1][2][3] electronic unit pump (EUP), 4,5 common rail, [6][7][8][9][10] and others are possible alternatives for Chinese engine manufacturers. However, their applications are limited by many factors including their availability, cost, and maintenance.…”

Section: Introductionmentioning

confidence: 99%

A study on cycle fuel injection quantity variation for a diesel engine combination electronic unit pump system

Fan

Tian

Yao

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part A:

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A new fuel injection equipment, combination electronic unit pump was developed to make diesel engines compliant with China's new laws on emissions. Combination electronic unit pump system is a complex assembly constituting of mechanical, hydraulic, and electrical magnetic components. Combination electronic unit pump system includes several electronic unit pumps and mechanical injectors. Cycle fuel injection quantity variation influences product performance and defines its quality of qualification. A numerical model of the combination electronic unit pump system was developed in AMESim environment to create a design tool for engine application and system optimization. Simulated results obtained from this numerical model were validated through experimental tests conducted under the conditions same as numerical model. The results are quite encouraging and consistent with model predictions. Influences of parameters, including variations in supply fuel pressure, cam velocity, plunger-matching clearance, peak control current, anchor residual clearance, valve-matching clearance, valve lift, injector opening pressure, nozzle-flow coefficient, and injector needle lift, on cycle fuel injection quantity variation were analyzed in AMESim simulation environment and verified through experiments. The quantitative percentage indexes of the influence of injector characteristic, valve characteristic, plunger characteristic, and low-pressure supply fuel characteristic parameters on cycle fuel injection quantity variation range from 44% to 34%, 20% to 35%, 32% to 19%, and 4% to 12%, respectively, at a cam rotational speed of 500-1300 r/min.

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Section: Introductionmentioning

confidence: 99%

A study on cycle fuel injection quantity variation for a diesel engine combination electronic unit pump system

Fan

Tian

Yao

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part A:

View full text Add to dashboard Cite

show abstract

“…EUI [1][2][3] , EUP [4] and common rail [5][6][7] , etc., the implementation is often difficult due to availability, cost and maintenance factors in the Chinese market. A new electronically controlled fuel injection system is desired to provide low cost, less maintenance and good adaptation to existing engines.…”

Section: Introductionmentioning

confidence: 99%

An investigation of the performance of an electronic in-line pump system for diesel engines

Fan

Zhu

Long

et al. 2008

J. Marine. Sci. Appl.

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WIT Electronic Fuel System Co., Ltd. has developed a new fuel injector, the Electronic In-line Pump (EIP) system, designed to meet China's diesel engine emission and fuel economy regulations. It can be used on marine diesel engines and commercial vehicle engines through different EIP systems. A numerical model of the EIP system was built in the AMESim environment for the purpose of creating a design tool for engine application and system optimization. The model was used to predict key injection characteristics under different operating conditions, such as injection pressure, injection rate, and injection duration. To validate these predictions, experimental tests were conducted under the conditions that were modeled. The results were quite encouraging and in agreement with model predictions. Additional experiments were conducted to study the injection characteristics of the EIP system. These results show that injection pressure and injection quantity are insensitive to injection timing variations, this is due to the design of the constant velocity cam profile. Finally, injection quantity and pressure vs. pulse width at different cam speeds are presented, an important injection characteristic for EIP system calibration.

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A methodology for engine design using multi-dimensional modelling and genetic algorithms with validation through experiments

Senecal

Montgomery

Reitz

2000

International Journal of Engine Research

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A methodology for internal combustion engine design has been formulated which incorporates multidimensional modelling and experiments to optimize and simulate direct injection diesel engine combustion and emissions formation. The computer code KIVA-GA performs full-cycle engine simulations within the framework of a genetic algorithm (GA) global optimization code. The methodology is applied to optimize a heavy-duty diesel truck engine. The study simultaneously investigated the effects of six engine input parameters on emissions and performance for a high-speed medium-load operating point. The start of injection (SOI), injection pressure, amount of exhaust gas recirculation (EGR), boost pressure and split injection rate shape were optimized. The convergence of the GA optimization process is demonstrated and the results were compared to those of the experimental optimization study employing a response surface method (RSM), which uses statistically designed experiments to determine an optimum design. In addition, the parameters of the computationally predicted optimum were run experimentally and good agreement was obtained. The potential for ultra-low emissions levels was assessed through additional computational GA runs that included higher maximum EGR levels (up to 50 per cent). The predicted optimum results in significantly lower soot and NOx emissions together with improved fuel consumption compared to the baseline design. The present results indicate that an efficient design methodology has been developed for optimization of internal combustion engines, one that allows simultaneous optimization of a large number of parameters.

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Meeting the Customer's Needs - Defining the Next Generation Electronically Controlled Unit Injector Concept for Heavy Duty Diesel Engines

Cited by 10 publications

References 21 publications

A study on cycle fuel injection quantity variation for a diesel engine combination electronic unit pump system

A study on cycle fuel injection quantity variation for a diesel engine combination electronic unit pump system

An investigation of the performance of an electronic in-line pump system for diesel engines

A methodology for engine design using multi-dimensional modelling and genetic algorithms with validation through experiments

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