Head for high performance internal combustion engine

Patent · Tue Aug 18 04:00:00 EDT 1987

OSTI ID:6254365

Smith, Jr, R W; Smith, M E

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
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
AIR FLOW
ATOMIZATION
COMBUSTION CHAMBERS
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
EXHAUST SYSTEMS
FLOW REGULATORS
FLUID FLOW
FUEL-AIR RATIO
FUELS
GAS FLOW
HEAT ENGINES
INCIDENCE ANGLE
INTAKE STRUCTURES
INTERNAL COMBUSTION ENGINES
LIQUID FUELS
MECHANICAL STRUCTURES
PERFORMANCE
PISTONS
QUENCHING
SPARK IGNITION ENGINES
VALVES