NÜRAL EcoTough ® 87-434600-00 Piston

78.90

  • Height [mm]:51,1
  • Cylinder Bore [mm]:84
  • Bolt Ø [mm]:22
  • Supplementary Article / Supplementary Info Info 2:for keystone connecting rod
  • Component Number:08-434600-00
  • Production Number:0843EA408
  • Compression Height [mm]:32,4
  • Recess Diameter [mm]:52,5
  • Bolt length [mm]:51
  • Recess Depth 1 [mm]:3,72
  • Valve pocket depth 1 [mm]:3,09
  • Valve pocket depth 2 [mm]:3,16
  • Standard Size [STD]
  • Product line:NÜRAL EcoTough ®
  • Piston Clearance [mm]:0,03, 0,033
  • Item number:87-434600-00
  • Manufacturer:NÜRAL
  • EAN number:4044197679249
  • TecDoc Engine Number:This characteristic varies depending on the car model.
  • Condition:New
Trade numbers: NÜRAL 87-434600-00
Categories: , ,

Description

Function:

  • The piston is located inside the engine cylinder and is connected to the crankshaft through a connecting rod.
  • During the combustion stroke, the burning air-fuel mixture expands and pushes the piston down the cylinder. This downward movement of the piston is then transferred to the connecting rod, which in turn rotates the crankshaft.
  • The piston essentially acts as a moving wall within the cylinder, compressing the air-fuel mixture during the intake stroke and being pushed down by the expanding gases during the combustion stroke.

Features:

  • Material: Pistons are typically made from aluminum alloys due to their lightweight properties, which help to reduce engine weight and improve fuel efficiency. However, some high-performance BMW engines may utilize forged steel pistons for increased strength and durability.
  • Design: The piston has a cylindrical body with a slightly domed top (crown) and a ring groove near the top. It also has a skirt that slides within the cylinder bore.
  • Piston rings: These are thin, spring-loaded rings that fit into the grooves on the piston and seal the combustion chamber. They are crucial for:
    • Preventing leakage of combustion gases: This ensures efficient combustion and power generation.
    • Minimizing oil consumption: The rings scrape a thin layer of oil from the cylinder walls, providing lubrication for the piston and cylinder wall while preventing excessive oil from entering the combustion chamber.
  • Piston pin: This pin connects the piston to the connecting rod, allowing the piston to move up and down while maintaining its connection to the crankshaft.

Importance:

The BMW engine piston plays a vital role in the engine’s power generation process. Its efficient movement and proper sealing are crucial for optimal engine performance, fuel economy, and emissions control.

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