Measuring and testing – Internal combustion engine or related engine system or... – Compression
Patent
1996-05-24
1998-01-13
Dombroske, George M.
Measuring and testing
Internal combustion engine or related engine system or...
Compression
340439, G01M 1500, G01L 326, F02M 3700
Patent
active
057082014
ABSTRACT:
A vehicular fuel flow measuring system derives a value for the consumption of fuel by an internal combustion engine operated with fuel from a tank containing a source thereof. The engine has a fuel introduction system with a first fuel pump having a suction input and a discharge output. The discharge output is coupled in fuel supply relationship with the engine for carrying out fuel combustion and recirculation functions. The fuel introduction system includes a first return conduit carrying return fuel for the recirculation function. The first return conduit has a first pressure regulating relief valve disposed therein. A second fuel pump is connectible between the first fuel pump and the fuel rail of the engine. The second fuel pump has a suction inlet and a discharge outlet for discharging pressurized fuel to the fuel rail of the engine. At least one flow measuring meter is connectible between the first fuel pump and the fuel rail of the engine. A mechanism is provided for matching the discharge pressure of the first and second fuel pumps. A control mechanism is provided for driving the second fuel pump at a flow rate substantially equal to a fuel flow rate of the first fuel pump.
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Dombroske George M.
Pierburg Instruments, Inc.
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