Idling speed control device of an internal combustion engine

Patent · Tue Aug 25 04:00:00 EDT 1987

OSTI ID:6051161

Takeda, Y; Anzai, K; Harada, O; Suematsu, T

An idling speed control device of an internal combustion engine is described which consists of: a first detecting means for detecting a revolutional speed of the engine; a second detecting means for detecting a temperature of the engine; means for regulating an amount of intake air during idling of the engine; means for providing at least two reference rotational values including a first predetermined rotational value when the temperature of the engine is higher than a predetermined temperature value in a considerably higher range, and a second predetermined rotational value when the temperature of the engine is lower than the predetermined temperature value, the first predetermined rotational value being greater than the second predetermined rotational value; and means responsive to outputs of the first and second detecting means for controlling the regulating means to cause the amount of intake air to be increased to a predetermined maximum value when the engine is started, and subsequently, to be decreased from the predetermined maximum value to a controlled value when the revolutional speed of the engine reaches the reference rotational value after the engine has started.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Toyota
• Patent Number(s): US 4688534
• OSTI ID: 6051161
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
FLUID FLOW
GAS FLOW
HEAT ENGINES
IGNITION
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
MOTION
ROTATION
SPEED REGULATORS
START-UP
TEMPERATURE MEASUREMENT
VELOCITY