Performance Development of a New Tier 4 Final Engine Family below 56 kW

This paper describes the design and performance development of the new Kohler / Lombardini KDI engine range which is a family of 3 and 4 cylinder, in line, water cooled engines covering the power range 37 - 56 kW. The paper covers the following aspects:

• Performance and economy
• Exhaust emissions over legislative cycles
• Deterioration factor test results
• Effect of fuel quality on emissions