This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Further Development of Solenoid Operated Gas Injectors with Fast Opening and Closing
Annotation ability available
Sector:
Language:
English
Abstract
The existing state of the art in solenoid operated injectors technology promotes their use mainly for gasoline manifold injection in spark ignition engines. The attempts to use such injectors for direct fuel injection are hampered by slower and less repeatable dynamic response, as compared with hydraulically or mechanically operated diesel injectors. Also, the impact of the solenoid overheating and the resulting loss of power, is considered detrimental for such injectors when installed in the cylinder head of an engine. The next (third) generation of solenoid operated injectors is dealing with all these disadvantages. First, it is using a special inductive driving circuit for the solenoid to boost the opening of the injector needle by amplifying the supply voltage, but only for a very short instant of time. Second, it is utilizing the differential angle in the conical needle seat to reduce the unbalanced pressure force acting on the injector needle when closed; this allows the injector to open at higher gas pressure or to use a stronger return spring to accelerate its closing. The paper explains the principles of these improvements and simulates the injector's behaviour on a computer.
Recommended Content
Authors
Citation
Kekedjian, H. and Krepec, T., "Further Development of Solenoid Operated Gas Injectors with Fast Opening and Closing," SAE Technical Paper 940450, 1994, https://doi.org/10.4271/940450.Also In
References
- Krepec T. Tebelis T. Kwok C. K. “Fuel Control Systems for Hydrogen-Fuelled Automotive Combustion Engines--a Prognosis” Int. J. Hydrogen Energy 9 1 2 109 114 1984
- Krepec T. Giannacopoulos T. Miele D. “New Electronically Controlled Hydrogen-Gas Injector, Development and Testing.” Hydrogen Energy 12 12 855 861 1987
- Krepec T. Carrese G. Miele D. “Further Investigation on Electronically Controlled Hydrogen Storage and Direct Injection System for Automotive Applications” Int. J. Hydrogen Energy 17 12 955 960 1992
- Hong H. Krepec T. Cheng R.M. “Optimization of Electronically Controlled Injectors for Direct Injection of Natural Gas in Diesel Engines.” SAE Paper No. 930928 1993
- Takiguchi M. Furuhama S. “Combustion Improvement of Liquid Hydrogen Fueled Engine for Medium Duty Trucks.” SAE Paper No. 87085 1987
- Wakenell J.F. O'Neal G.G Baker Q.A. Urban C.M. “An Investigation of High Pressure/Late Cycle Injection of CNG as a Fuel for Rail Applications.” Report Southwest Research Institute 1988
- Green C.J. Wallace J.S. “Electronically Actuated Injector for Gaseous Fuels” SAE Paper No. 892174 1989
- Glasson N. Green R. “High Pressure Hydrogen Injection” Proceedings of the 9 th World Hydrogen Energy Conference Paris 22-25 June 1992
- Hames R.J. Straub R.D. Amann R.W. “DDEC Detroit Diesel Electronic Control” SAE Paper No 850542 1985
- Smith D.H. Spinweber D.A. “A General Model for Solenoid Fuel Injector Dynamics” SAE Paper No. 800508 1980