Title:
【発明の名称】燃料ポンプ動作を自動的に釣り合わせることができる燃料供給計測装置
Document Type and Number:
Japanese Patent JP2000514517
Kind Code:
A
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.
Inventors:
Kaub, Peter
Application Number:
JP54262397A
Publication Date:
October 31, 2000
Filing Date:
May 20, 1997
Export Citation:
Assignee:
Piaberg Instruments, Inc.
International Classes:
F02D33/00; F02M37/00; F02M59/44; F02M63/00; G01F9/00; (IPC1-7): F02M37/00; G01M15/00
Attorney, Agent or Firm:
Tetsuya Mori (3 others)