F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
341/38.12
F02D 19/08 (2006.01) F02D 19/10 (2006.01) F02D 41/00 (2006.01) F02D 41/38 (2006.01) F02D 41/40 (2006.01) F02B 3/06 (2006.01)
Patent
CA 1231415
ABSTRACT OF DISCLOSURE An electrically controllable dual fuel system for an internal combustion engine (such as, but not necessarily confined to, a diesel engine) having a liquid fuel injection system incorporating an injector pump for delivering prescribed quantities of a principal liquid fuel )e.g. diesel oil) under pressure to individual injectors for the engine cylinders comprising an electronic control unit, an electrically controllable variable flow regulator arranged to receive a combustible alternative fuel (e.g. a gas such as CNG or LPG) under pressure and deliver controlled quantities of the alternative fuel to the engine as determined by signals received by and transmitted from said electronic control unit,by-pass bleed means for bleeding fuel from the principal fuel injection system at the output side of the injector pump and before the injectors and by-passing the bled fuel to a by-pass control system which includes pressure or flow actuated means for measuring the quantity of fuel bled from the injection system and supplying a corresponding signal to the control unit; the control unit determining the energy value of the proportion of principal fuel normally intended to be supplied to the engine to meet the engines demands at that time but bled from the injection system and controlling the prescribed amount of electric power to the variable flow regulator to enable delivery to the engine of the prescribed quantities of alternative fuel proportional in energy value to that necessary to maintain the required power rating and/or speed of the engine for normal efficient operation.
460279
Jones George L.
Poletti Neil R.
Rainey Jonathon B.
Reid Harvey M.
Borden Ladner Gervais Llp
Reid Harvey M.
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