Figure 41. Turbulence Chamber.

Principles of Gasoline And Disesel Fuel Systems
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initial combustion cause a superheated fuel charge to enter the main

combustion chamber at a tremendous velocity.

(3) The entering mixture hits the hollowed out piston top, creating

turbulence in the chamber to ensure complete mixing of the fuel charge with

the air. This mixing ensures even and complete combustion. This chamber

design will provide satisfactory performance with low fuel injector

pressures and coarse spray patterns because a large amount of vaporization

takes place in the combustion chamber. This chamber is also not very

susceptible to ignition lag, making it more suitable for high speed

applications.

c. Turbulence Chamber (figure 41). The turbulence chamber is similar

in appearance to the precombustion chamber, but its function is different.

There is very little clearance between the top of the piston and the head,

so that a high

FIGURE 41. TURBULENCE CHAMBER.