Study On The Influence Of Ambient Condition On Turbocharger Of Marine Diesel Engine

Marine diesel manufacturers and users always concern the matter of the influence of ambient temperature on turbocharger, and what measures they should take to ensure the diesel work safely and reliably, to satisfy the requirement of operation.This paper analyzes the compressor's parameters, which vary with the change of ambient temperature.At first, it introduces the performance and arithmetic analysis of the turbocharger of marine diesel engine, then builds mathematic model for the air cooler.Secondly, the paper studies the relation between the change of compressor's working point and the change of surrounding temperature by charts, points out the change trend of its parameters. Then, takes 6210Z_LC-3 marine diesel engine (matched with VTR201-2N turbocharger) manufactured by ZIBO DIESEL ENGINE FACTORY for example to calculate the influence of ambient condition variation on the performance of marine diesel engine and its turbocharger with GT-POWER.At last, the effect of decreasing the maximum pressure by the ways of adopting scavenge air bypass system and increasing scavenge air temperature is simulated. It turns out adopting scavenge air bypass system is more preferable by comparison between these two methods. And what's more, puts forward the modification imagination of scavenge air bypass application.The obtained conclusions are useful for engineers to understand correctly the performance of the turbocharged diesel engine running at different temperatures, therefore take proper measures .