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Diesel engine performance and design characteristics are affected by applications. Understanding general performance characteristics and the relationship between engine system design and applications is important for diesel engine system design engineers. This paper is the Part 2 of a series of three companion papers (parts) addressing diesel engine applications (i.e., Part 1 - organization design and systems engineering; Part 2 - general performance characteristics; and Part 3 - operating and design characteristics of different applications). It illustrates important general characteristics with selected examples, and highlights key issues and commonalities of different applications that engine system design engineers need to know. Series design and multi-purpose design are summarized. Four core equations in an engine air system theory are proposed in order to reveal the parametric dependency of pumping-loss-related parameters.

The two most important issues for diesel engine system engineers to handle engine applications are how to coordinate technical relationships in an organization/team and how to acquire working knowledge of different applications for system integration. This paper is the first part of a series of three inter-related papers (parts) addressing diesel engine applications (i.e., Part 1 - the relationship among applications, engine system design, systems engineering, and organization structure; Part 2 - general performance characteristics of diesel engine applications; and Part 3 - specific or special emissions, operating, and design characteristics of different applications). Specialization, departmentalization, and integration are the three most critical aspects in organization design for engine product development.