Method and device for forming mixture gas in direct injection type internal combustion engine
A mixture gas formation method is described for a direct fuel injection type internal combustion engine having a piston with a recess forming a combustion space, air intake means with swirling means for swirling intake air to be supplied to the combustion space, and an intermittent type swirl injection nozzle having at least one tangential passage for swirling fuel, for jetting fuel in substantially conical form through an injection hole thereof into the swirling intake air, to form a mixture gas. The method consists of the steps of: supplying swirling intake air into the combustion space, the swirling intake air having a swirl speed in conformance to the speed of the internal combustion engine, and spraying fuel from the swirl injection nozzle into the swirling intake air in the combustion space at a fuel spray angle, defined as the angle of the conical form, varied in response to the engine speed, thereby controlling the spray travel distance of the fuel and allowing the fuel to float in the combustion space substantially without adhering to a wall of the combustion space.
- Assignee:
- Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi
- Patent Number(s):
- US 4685432
- OSTI ID:
- 6092733
- Country of Publication:
- United States
- Language:
- English
Similar Records
Combustion chamber for internal combustion engines
Direct injection type internal combustion engine
Related Subjects
330100* -- Internal Combustion Engines
AIR FLOW
DISPERSIONS
ENGINES
FLUID FLOW
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GAS FLOW
HEAT ENGINES
INCIDENCE ANGLE
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
MIXTURES
NOZZLES
PISTONS
SPRAYS
VELOCITY
VORTEX FLOW