Which of the combustion chambers shown in...

Question 1 of 2707066636eef28f7522a1c51f85d

Which of the combustion chambers shown in the illustration is referred to as an "energy cell" used in some small diesel engines? Illustration MO-0068

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Question 1 of 27070

Which of the combustion chambers shown in the illustration is referred to as an "energy cell" used in some small diesel engines? Illustration MO-0068

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🔍 Key Concepts

• Compare direct-injection (open) chambers vs precombustion / swirl chambers vs energy cell (Lanova-type) chambers in small diesel engines. • In an energy cell, fuel is injected into a small auxiliary chamber connected to the main cylinder by a restricted passage, which causes strong air motion and staged combustion. • Note the location and angle of the fuel injector and whether combustion starts in a small side chamber or directly over the piston crown.

💭 Think About

• Which figure shows a separate, small chamber in the cylinder head where the injector sprays, instead of spraying directly into a bowl in the piston? • In an open (direct-injection) chamber, the piston crown usually has a shaped recess (bowl) and there is no isolated pocket; do you see any figures that clearly match that, so you can rule them out? • Look for the design where the air/fuel mixture must rush through a narrow throat between a small cell and the main cylinder—this is characteristic of an energy cell; which option best matches that flow path?

✅ Before You Answer

• Identify which illustration has a distinct auxiliary cell in the head connected by a narrow passage to the main combustion space. • Verify the fuel injector aims into that auxiliary cell, not into the main chamber or piston bowl. • Eliminate the illustrations that clearly show simple open chambers or classic swirl/precombustion chambers rather than a specialized energy-cell layout.