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Direct gas injection in natural gas vehicles~An advanced solution
Technical Paper
1996-25-0184
Sector:
Event:
ISATA 1996
Language:
English
Abstract
Existing fuel supply technology for natural gas vehicles is
based on manifold gas injection system similar to gasoline
injection. This results in lower engine power, as compared to
gasoline fueling and in limited efficiency. Alternative solution,
direct gas injection, is not ready for implementation due to some
not yet resolved gas supply and combustion problems.
This paper is presenting a comprehensive research work aimed at
development of a complete gas supply system based on direct
injection of natural gas into the cylinder of a diesel engine at
the end of the compression process. It consists of a
thermocontrolled tank which is storing more gas than a conventional
one at the same maximum pressure, of fast opening and damped
closing solenoid operated gas injectors and of an ignition chamber
initiating the gas combustion after injection. The presented
concepts have been computer simulated and partly test validated.
Further development of this technology is under consideration.