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Optimized high pressure internal combustion engines

  • US 5,058,537 A
  • Filed: 04/21/1989
  • Issued: 10/22/1991
  • Est. Priority Date: 04/21/1989
  • Status: Expired due to Fees
First Claim
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1. An internal combustion engine comprising an engine housing including a cylinder with a circular cross section with opposed pistons reciprocal in the cylinder, and at least one fuel injector for injecting fuel into the cylinder, the cylinder having:

  • a central regional combustion chamber comprising a constricted portion of the cylinder with a central bore open to the opposed pistons for concentrating and mixing air compressed by the pistons and fuel injected by the injector,wherein the constricted portion of the cylinder is formed with a constriction collar having side faces, wherein the pistons each have a piston head with a top face portion that positions opposite and proximate one of the side faces when the pistons are at top dead center, wherein a squish of compressed air is forced from between the side face of the collar and the top face of the piston to improve turbulent mixing of fuel injected into the central regional combustion chamber, and wherein the collar forms a central bore having a cross sectional area that is non-circular such that the squish of compressed air forced from between the side face of the collar and the top face of the piston is not uniformly radially directed.

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