Air intake device of an internal combustion engine

Patent · Tue Mar 11 00:00:00 EST 1986

OSTI ID:5745391

Inoue, T; Oishi, K; Okamoto, T; Takeda, K

This patent describes an air intake device of an internal combustion engine having an air cleaner, a cylinder head, a combustion chamber and an intake valve. This device consists of a main air intake passage interconnecting the air cleaner to the combustion chamber and containing a throttle valve therein; an auxiliary air intake passage; an air pulsation control valve arranged in the second end of the auxiliary air intake passage for controlling communication between the second end of the auxiliary air intake passage and the main intake passage, the communication occurring at a location upstream of the throttle valve; first actuating means for actuating the air pulsation control valve in response to engine load and speed to selectively open the air pulsation control valve when the engine load exceeds a predetermined first load and the engine speed is within a predetermined first speed range and to selectively close the air pulsation control valve when the engine speed is within a predetermined second range; an intake port formed in the cylinder head and forming a part of the main air intake passage, the intake port having a helical portion which is formed around the intake valve and has a helix terminating portion, a bypass passage branched off from the inlet passage portion and connected to the helical portion at the helix terminating portion; a flow path control valve arranged in the bypass passage; and second actuating means for actuating the flow path control valve in response to the engine load to open the flow path control valve when the engine load exceeds a predetermined second load not larger than the predetermined first load and to close the flow path control valve when the engine load is lower than the predetermined second load.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Toyota
• Patent Number(s): US 4574748
• OSTI ID: 5745391
• Resource Relation: Patent File Date: Filed date 13 Sep 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
INTERNAL COMBUSTION ENGINES
AIR FILTERS
COMPUTERIZED CONTROL SYSTEMS
VALVES
ACTUATORS
AIR FLOW
COMBUSTION CHAMBERS
CYLINDERS
PIPES
PULSATIONS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ENGINES
EQUIPMENT
FILTERS
FLOW REGULATORS
FLUID FLOW
GAS FLOW
HEAT ENGINES
POLLUTION CONTROL EQUIPMENT
330100* - Internal Combustion Engines