Trunk type diesel engine pistons are effectively cooled when heat is()
- Aradiated through the engine block
- Btransferred to water cooled cylinder walls
- Cconducted through the piston crown
- Dtransferred to escaping exhaust gase
Trunk type diesel engine pistons are effectively cooled when heat is()
1、Trunk-type diesel engine pistons are m
Trunk-type diesel engine pistons are most effectively cooled by heat()Aconducted through the engine blockBconducted to water cooled cylinder wallsCconducted through the piston crownDloss to escaping exhaust gase
2、A diesel engine piston ring face is in
A diesel engine piston ring face is in direct contact with the ().Atop of the ring grooveBcylinder liner oil filmCbottom of the ring grooveDback of the ring groove
3、In a four-cycle diesel engine piston b
In a four-cycle diesel engine piston blow-by can result in increased()Acrankcase pressureBcompression pressureCscavenge pressureDexhaust manifold pressure
4、The marine diesel engine is a type of
The marine diesel engine is a type of diesel engine used on ships The () of its operation is not very difficult to understand.AprincipleBprincipalCcauseDcase
5、Diesel engines are started by supplyin
Diesel engines are started by supplying () into the cylinders in the appropriate sequence for the required direction.Afuel oilBdiesel oilCcompressed airDjacket water
6、Diesel engines are considered safer th
Diesel engines are considered safer than gasoline engines because().Athey are more heavily builtBthe fuel used is less volatileCthey can be easily reversedDthey operate at a lower speed