Air intake device of an internal combustion engine

Patent · Tue Sep 02 04:00:00 EDT 1986

OSTI ID:5231955

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

An air intake device is described for an internal combustion engine having an air cleaner and a cylinder. The device consists of: a main air intake passage interconnecting the air cleaner to the cylinder; an auxiliary air intake passage having a first end and a second end which are connected to the air cleaner and the main air intake passage, respectively, the auxiliary air intake passage having an equivalent pipe length which is substantially equal to that of the main air intake passage; valve means arranged in the second end of the auxiliary air intake passage and having a valve port and a disc-shaped valve body which faces the valve port, the valve body having a conically-shaped convex front face which is directed toward the main air intake passage and having a conically-shaped convex rear face which is formed opposite to the front face; means for actuating the valve body in response to an engine speed to open the valve port when the engine speed is within a predetermined first speed range and close the valve port by the valve body when the engine speed is within a predetermined second range, wherein the first speed range comprises a high speed range, and the second speed range comprises a range of the engine speed which is lower than the engine speed in the high speed range; a throttle valve arranged in the main air intake passage; and a single fuel injector arranged in the main air intake passage upstream of the throttle valve and downstream of the second end of the auxiliary air intake passage.

• Assignee: Toyota Jidosha Kabushiki Kaisha, Toyota
• Patent Number(s): US 4608948
• OSTI ID: 5231955
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FILTERS
AIR FLOW
CONTROL EQUIPMENT
CYLINDERS
ENGINES
EQUIPMENT
FILTERS
FLOW REGULATORS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
POLLUTION CONTROL EQUIPMENT
VALVES
VELOCITY