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Author Question: For lowest hydrocarbon emissions, which of these engine design features is used? (Read 462 times)

robinn137

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on: Aug 13, 2021

Question 1

Cylinder heads with four valves flow more air than those with two valves because they ________.
◦ Have a greater open area
◦ Use a higher lift camshaft
◦ Increase the velocity of the air
◦ Both A and C

Question 2

For lowest hydrocarbon emissions, which of these engine design features is used?
◦ Low combustion chamber surface area-to-volume ratio
◦ High combustion chamber surface area-to-volume ratio
◦ Non-centrally mounted spark plug
◦ Increased (as much as possible) quench area
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Marked as best answer by robinn137 on Aug 13, 2021

dlook33

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Reply #1 on: Aug 13, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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figz88

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Reply #2 on: May 10, 2022
thank you


low_fat_Yogurt

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Reply #3 on: Nov 1, 2022
thank you


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