Spark-ignition, air-compressing, internal combustion engine

Patent · Tue Sep 20 00:00:00 EDT 1988

OSTI ID:6557329

Chmela, F; Herzog, W; Meier, R

This patent describes a spark-ignition, air-compressing, internal combustion engine that has direct ignition of a major portion of the fuel by means of a jet onto the wall of the combustion chamber that is provided, in the shape of a body of revolution, in the piston, whereby rotary motion is imparted by means known per se to the inflowing air in the direction of the injected fuel jet so as to cause the fuel to be removed gradually in the vapor state from the wall of the combustion chamber and to be mixed with the air, the injection nozzle being located in the cylinder head near the combustion chamber rim, with the spark plug, which is disposed opposite the injection nozzle, extending into the combustion chamber in the top dead center position of the piston, with the side wall of the combustion chamber, when viewed in cross section, being formed by two arcs that blend into each other and have respective radii of curvature R/sub 1/, R/sub 2/, the first arc having a radius R/sub 1/ that extends from a restricted combustion chamber opening down to the maximum combustion chamber diameter D/sub B/, and the second arc having a radius R/sub 2/ that extends down to the bottom of the combustion chamber and blends into the latter. The maximum combustion chamber diameter D/sub B/ being 0.5 to 0.7 times the diameter D/sub K/ of the piston and being at a defined depth t/sub D/ from the piston crown relative to the depth T/sub B/ of the combustion chamber, the ratio of the diameter d/sub H/ of the combustion chamber opening to the maximum combustion chamber diameter D/sub B/.

• Assignee: MAN Nufahrzeuge GmbH, Munich
• Patent Number(s): US 4771748
• OSTI ID: 6557329
• Resource Relation: Patent File Date: Filed date 25 Sep 1987
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
FUEL INJECTION SYSTEMS
GAS COMPRESSORS
SPARK IGNITION ENGINES
AIR FLOW
COMBUSTION CHAMBERS
COMBUSTION CONTROL
COMPRESSED AIR
DESIGN
IGNITION SYSTEMS
NOZZLES
VALVES
AIR
COMPRESSED GASES
COMPRESSORS
CONTROL
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FLUIDS
FUEL SYSTEMS
GAS FLOW
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
330101* - Internal Combustion Engines- Spark-Ignition