Invention Grant
- Patent Title: Fuel supply control apparatus for bi-fuel internal combustion engine, and method of switching fuel in bi-fuel internal combustion engine
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Application No.: US14360762Application Date: 2012-11-27
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Publication No.: US09695756B2Publication Date: 2017-07-04
- Inventor: Daisuke Tsutsui , Akito Onishi , Takao Komoda
- Applicant: AISAN KOGYO KABUSHIKI KAISHA
- Applicant Address: JP Aichi-ken JP Aichi-ken
- Assignee: Aisan Kogyo Kabushiki Kaisha,Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Aisan Kogyo Kabushiki Kaisha,Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Aichi-ken JP Aichi-ken
- Agency: Patterson Thuente Pedersen, P.A.
- Priority: JP2011-262411 20111130
- International Application: PCT/JP2012/080534 WO 20121127
- International Announcement: WO2013/080935 WO 20130606
- Main IPC: F02M51/00
- IPC: F02M51/00 ; F02D19/06 ; F02D41/00 ; F02M21/02 ; F02D41/06
Abstract:
When switching the fuel to be used for engine operation from gasoline to CNG, in a state where CNG is supplied experimentally to one cylinder serving as a judgment object and gasoline is supplied to other cylinders, whether or not CNG can be supplied to the cylinder serving as a judgment object is judged based on an amount of change ΔPc in fuel pressure inside a CNG delivery pipe (Step S13 to Step S16). When it is judged that a gas fuel can be supplied to all cylinders (Step S19: YES), the fuel to be used for engine operation is switched from the liquid fuel to the gas fuel (Step S20).
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