Internal-combustion engines – Precombustion and main combustion chambers in series – Piston shape complements precombustion chamber discharge
Patent
1993-09-28
1995-09-05
Okonsky, David A.
Internal-combustion engines
Precombustion and main combustion chambers in series
Piston shape complements precombustion chamber discharge
F02F 324
Patent
active
054471303
ABSTRACT:
The present invention integrates the combustors and the air intake/exhaust passages in a thermally insulating engine into an assembly to simplify the structure and to space the parts thereof. The space between the subcombustion chamber and the main combustion chamber is reduced by the base installed above the piston head. In addition, a plurality of connection holes are arranged in an oblique radial pattern drilled in the piston head projection creating a vortex within the subcombustion chamber. In the combustion process, the flame expands within the main combustion chamber and mixes with air for combustion. The subcombustion chamber is installed in the center of the cylinder and surrounded by the air intake passage and the exhaust passage. The single-unit structure is made by using a ceramic material for an outer peripheral wall. Additionally, a plurality of the air intakes and exhaust outlets are provided on the piston projection so that respective channels have a wide opening. Further, two turbochargers which allow flexible serial/parallel connection of the turbocharger system, are installed so that a compact and highly efficient system can be obtained.
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Isuzu Ceramics Research Institute Co. Ltd.
Okonsky David A.
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