KOHLER KDI Diesel Engine Lineup

KDI line, which now includes eight engines, achieves Tier 4 Final emission compliance.

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Kohler Engines is expanding its direct injection (KDI) engine line with the introduction of the 3.4-liter KDI 3404 diesel engine. Kohler’s KDI line, which now includes eight engines, achieves Tier 4 Final emission compliance without a DPF due to a number of innovative design features, including a direct injection system, cooled exhaust gas recirculation (EGR) and diesel oxygenated catalyst (DOC). A high-pressure common rail system (CSR) is also integrated, which utilizes pressures at 2000 bar (29,000 psi) to deliver better atomization of fuel, improved fuel consumption and a reduction in emission particulates. All of these advancements are delivered in a compact engine design that will fit existing and new equipment designed by OEMs.

The KDI 3404 is available in four ratings, ranging from 74 to 134 hp. (55.4 to 100 kW) with peak torques from 276 to 369 lb. ft. (375 to 500 Nm). To enhance power and torque, the engine’s mapping program within the Electronic Control Unit (ECU) monitors and manages power output in varying conditions by injecting fuel multiple times into the combustion cycle.

The compact and lightweight design of the engine – along with the absence of a DPF – gives equipment manufacturers more flexibility in design and engine integration. End-users also benefit from reduced maintenance, better heat management and enhanced fuel efficiency.

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