Head for high performance internal combustion engine
This patent describes a cast head for high performance internal combustion engine of the type using an atomized mixture of air and liquid fuel, the head including a flat mounting surface and having, for each of several in-line circular piston areas, (a) a wedge type combustion chamber extending from a head mounting surface and defined by a flat quenching surface coplanar with the mounting surface and extending generally along a chord of the circular piston area, and a concave, contoured wedge-shaped cavity forming surface, the wedge-shaped cavity tapering outwardly from the quenching surface between a shallow chordal area adjacent the quenching surface and a deeper valving area removed from the quenching surface; (b) a circular exhaust valve seat defining an exhaust outlet at the deeper valving surface and having a first axis; (c) a circular intake valve seat defining an intake inlet at the deeper valving surface and having a second axis; (d) an exhaust passage extending from the exhaust outlet with a first passage portion extending generally axially of the first axis and a second elongated outlet passage portion with a general axial centerline forming a first angle with the first axis; (e) an intake passage extending to the intake inlet with a first passage portion extending generally axially of the second axis and a second elongated inlet passage portion with a general axial centerline forming a second angle with the second axis for introduction of an atomized mixture of air and fuel into the combustion chamber through the intake inlet; and, (f) a spark plug receiving bore in the cavity forming surface generally between the first and second axes, an improvement for obtaining, at 5000 RPM, a brake specific fuel consumption of substantially below 0.50 Lbs/BHp-Hr and a brake horsepower of over 400 Hp.
- Assignee:
- TFS, Inc., Wooster, OH
- Patent Number(s):
- US 4686948
- OSTI ID:
- 6254365
- Resource Relation:
- Patent File Date: Filed date 29 Jul 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SPARK IGNITION ENGINES
COMBUSTION CHAMBERS
PISTONS
VALVES
AIR FLOW
ATOMIZATION
EXHAUST SYSTEMS
FUEL-AIR RATIO
INCIDENCE ANGLE
INTAKE STRUCTURES
LIQUID FUELS
PERFORMANCE
QUENCHING
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
FUELS
GAS FLOW
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MECHANICAL STRUCTURES
330101* - Internal Combustion Engines- Spark-Ignition