Intake arrangement for internal combustion engine

Patent · Tue Oct 27 04:00:00 EST 1987

OSTI ID:5684192

Hatamura, K; Asanomi, K

An intake arrangement for an internal combustion engine is described comprising a first and second intake ports for supplying intake gases. The first and second intake ports open into a combustion chamber of the internal combustion engine. The combustion chamber includes a cylinder having an axial and a lateral direction, and intake valves disposed in the respective intake ports and a main intake passage in communication with the intake ports for supplying the intake gases to the combustion chamber. The main intake passage has a lower portion curved to a large extent in the axial direction in the vicinity of the ports. A shutter valve means is provided in the main intake passage. The shutter valve means are adapted to be held in a closed state when intake air amount is small and to be opened when the intake air amount is increased for control to increase or decrease passage area of the main intake passage according to the engine operating conditions. A throttle valve and means for causing a swirling flow of gases in a circumferential direction of the combustion chamber comprises a single auxiliary intake passage having an upstream end opening into the main intake passage at a location upstream of the shutter valve means and downstream of the throttle valve, and also has a downstream end opening only adjacent the first intake port.

• Assignee: Mazda Motor Corp., Hiroshima
• Patent Number(s): US 4702207
• OSTI ID: 5684192
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
AIR FLOW
CONTROL EQUIPMENT
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
FUEL-AIR RATIO
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
VALVES
VORTEX FLOW