Apparatus for controlling the idling operation of an internal combustion engine

Patent · Tue Aug 30 00:00:00 EDT 1988

OSTI ID:6761291

Fujimori, K

This patent describes an apparatus for controlling the idling operation of an internal combustion engine having a closed-loop control system for controlling the amount of fuel to be supplied to a multi-cylinder internal combustion engine so as to maintain the average engine speed of the internal combustion engine at a desired target idling rotational speed, the output torque produced during the power stroke of a cylinder of the engine being influenced by the output torque of another cylinder. The apparatus consists of: a first detecting means for detecting the operation timing of the internal combustion engine; a second detecting means for producing a timing signal for determining a predetermined measurement period for each cylinder which includes that part of the combustion period during which torque is produced due to fuel combustion in a cylinder concerned during which no influence arises because of torque produced in cylinders other than the specific cylinder concerned, and only a portion of that part of the combustion period during which there is the influence because of torque produced in another cylinder such that the predetermined measurement period corresponds substantially to the minimum points of the instantaneous crankshaft speed associated with the specific cylinder concerned.

• Assignee: Diesel Kiki Co., Ltd., Tokyo
• Patent Number(s): US 4766863
• OSTI ID: 6761291
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
ACCELERATION
CLOSED-LOOP CONTROL
COMPUTERIZED CONTROL SYSTEMS
CONTROL
CONTROL SYSTEMS
DESIGN
ENGINES
FUEL SYSTEMS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
METERING
OPERATION
TIMING PROPERTIES
TORQUE