Fuel control device for diesel engine

Patent · Tue Nov 23 00:00:00 EST 1982

OSTI ID:6585912

Nakao, K

A fuel control device for a diesel engine injection system having a motor-driven pump for supplying fuel to the injectors of said engine by driving a fuel pump with a dc motor, means for outputting a first motor-driven pump speed instruction signal according to a throttle position and an engine speed, a function generator for outputting a motor-driven pump armature current setting signal according to an engine speed along a torque curve preset for said engine, a motor speed detecting circuit for detecting an armature current of said motor-driven pump, to output an armature current signal, an integrator for integrating a difference between said armature current setting signal and an actual armature current signal, to output a second motor-driven pump speed instruction signal, and a minimum signal priority circuit for outputting a smaller one of said first and second instruction signals in priority, to control the armature current, whereby the speed of said motor-driven pump is regulated according to an engine speed, for torque regulation of the engine. Other aspects of the invention include an exhaust gas temperature input, coolant temperature, supercharger speed, and acceleration and deceleration inputs. In one embodiment of the invention the electric motor driven pump is driven by the output of an alternator whose excitation coil is controlled by the output of the fuel control circuit.

• Assignee: EDB-83-050488
• Patent Number(s): US 4359984
• OSTI ID: 6585912
• Resource Relation: Patent Priority Date: Priority date 25 May 1979, Japan; Other Information: PAT-APPL-151648
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
DIESEL ENGINES
FUEL INJECTION SYSTEMS
CONTROL EQUIPMENT
FUNCTION GENERATORS
MOTORS
PULSE INTEGRATORS
PUMPS
SIGNALS
SUPERCHARGERS
COMPRESSORS
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
330102* - Internal Combustion Engines- Diesel