Question

13 multiple choice 1 point due to the high volume of air flow during scavenging in a two - stroke engine, the cooling affect of this air is reported to be responsible for ________ of engine cooling. 20% 30% 40% 10% 14 multiple choice 1 point which component is the largest structure of an engine? cylinder block cylinder head front cover flywheel housing 15 multiple choice 1 point the clearance volume is measured with the piston at the tdc position. which factor listed below would be directly affected by changing the physical clearance volume dimension? compression ratio valve duration intake stroke

Explanation:

1. In two - stroke engines, the cooling effect of scavenging air is reported to account for about 40% of engine cooling.
2. The cylinder block is typically the largest structure in an engine, housing cylinders and other key components.
3. The compression ratio is directly related to the clearance volume. Compression ratio is calculated based on the total volume (swept volume + clearance volume) and clearance volume when the piston is at Top - Dead - Center (TDC). Changing the clearance volume dimension will directly change the compression ratio.

Answer:

1. 40%
2. Cylinder block
3. Compression ratio