Engine : Motor Plants and Auxiliary Boilers - 1308/947
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| During the valve overlap period, the exhaust pressure of a turbocharged, four-stroke cycle diesel engine must be less than the intake manifold pressure to ensure __________. |
| A) effective cylinder scavenging and cooling |
| B) constant pressure from the turbochargers |
| C) cooler operation of the exhaust system |
| D) effective constant pressure for turbocharger operation |
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