×

Combustion chamber structure for internal combustion engine

  • US 6,874,489 B2
  • Filed: 08/28/2003
  • Issued: 04/05/2005
  • Est. Priority Date: 08/28/2002
  • Status: Expired due to Fees
First Claim
Patent Images

1. A combustion chamber structure for an internal combustion engine comprising:

  • a piston (13), and a cylinder head (14), the combustion chamber being defined by a lower surface (14a) of an inner wall of the cylinder head (14) which confronts a cylinder bore (12a) and an upper surface of the piston (13) which slidably fits in the cylinder bore (12a), wherein a predetermined gap (α

    , β

    ) is formed between the lower surface (14) of the inner wall of the cylinder head (14) and the upper surface of the piston (13), a squish area (A2) is provided between a pair of valve recesses (13d, 13e) formed adjacent to each other on the upper surface of the piston (13) in a direction of an axis (L2) of a piston pin, and the gap (α

    , β

    ) is formed such that the height thereof is higher at a circumferential center of the piston (13) than on circumferential sides thereof in the squish area (A2).

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×