ENGINE UNIT


  1. CONSTRUCTION


    1. A tumble maintaining shape is used for the piston top surface to achieve high-speed combustion. As a result, occurrences of knocking are suppressed, creating high compression and achieving high performance and low fuel consumption.

    2. The basic framework of the piston is revised and the casting conditions are optimized to reduce the thickness of each part of the piston, achieving thorough weight reduction.

    3. The skirt portion of the piston has a resin coating to ensure a smooth surface. By minimizing bore friction, protection against scuffing is enhanced.

    4. The inner diameter of the piston pin is tapered, achieving weight reduction.

    5. PVD processing* is used on the outer circumference of the compression ring and oil ring to ensure wear resistance by reducing friction and friction resistance.

      Tech Tips

      *: Physical Vapor Deposition (PVD) processing: A surface hardening process that applies a ceramic coating to the surface of a product to increase its wear resistance.

    6. An oil ring expander which utilizes punched grooves to prevent deposits from accumulating is used. Oil flow between the expander and side rails is enhanced, realizing a structure that prevents deposits from accumulating.

      B0056A9C01
      *1 Piston *2 No. 1 Compression Ring
      *3 No. 2 Compression Ring *4 Oil Ring
      *a PVD Processing *b Tumble Maintaining Shape
      *c Resin Coating *d Thickness Reduction
      *e Tapered Piston Inner Diameter - -