Mitsubishi Heavy Industries Announces Production Schedule for New Tier 4 Diesel Engines
September 10th, 2012
Category: Diesel Engines (51 HP to 100 HP)
ADDISON, IL — Mitsubishi Heavy Industries, Ltd. (MHI) has announced its production schedule for three new small diesel engines in response to approaching EPA Tier 4 regulations. The new D03CJ, D04CJ and D04EG models provide regulation compliant solutions in the 19kW (25 hp) to 74 kW (99 hp) output range. The Tier 4 compliant D03CJ and D04CJ will begin production in 2013, whereas the Tier 4 interim D04EG is currently available, and the Tier 4 final version will be available in 2015.
Featuring a three-cylinder design, the D03CJ (1.655L) produces a maximum output of 41kW (55 hp) and a maximum torque of 165 Nm at 1,800 rpm. The four-cylinder equivalent of this engine, the D04CJ (2.207L), produces a maximum output of 55kW (74 hp) and a maximum torque of 230 Nm at 1,800 rpm. The power densities of the D03CJ and D04CJ are 0.24 and 0.27kW/L, respectively.
Both engines feature an optimized common rail system with a diesel particulate filter (DPF) and diesel oxidation catalyst (DOC) for Tier 4 compliance. Common MHI goals when developing new engines are to achieve a more compact design without sacrificing power, while also lowering fuel consumption. Appropriately, compared to the previous Tier 3 compliant models being replaced, the D03CJ and D04CJ offer a smaller displacement, while output has been increased. Fuel efficiency is also 16-percent better than the previous engines.
The new Tier 4 interim, four-cylinder D04EG (3.331L) delivers a maximum output of 74kW (99 hp) and a maximum torque of 375 Nm at 1,600 rpm, with a power density of 0.22 kW/L. The engine utilizes a common rail system including an exhaust gas recirculation (EGR) system and a DPF and DOC for Tier 4 interim compliance. Compared with the Tier 3 engine it replaces, the D04EG offers 12-percent improved fuel economy.
Again, the Tier 4 interim version of the D04EG is currently available, whereas the Tier 4 final model will be available starting in 2015. To achieve Tier 4 final compliance in the power range of 57kW to 74kW, MHI’s current plan is to incorporate a selective catalytic reduction (SCR) system.
All three new engine models are equipped with high-performance turbochargers. MHI turbochargers are manufactured at the same plant that the engines are produced. This closer proximity design and production results in the ideal turbocharger match for each engine, maximizing overall performance. Combined with the new optimized common rail system, the engines achieve an enhanced power density that increases output up to 50-percent when compared with the previous Tier 3 compliant engines.
About Mitsubishi Heavy Industries
Mitsubishi Heavy Industries, Ltd. (MHI), headquartered in Tokyo, Japan, is one of the world’s leading heavy machinery manufacturers, with consolidated sales of 2,820.9 billion yen in fiscal 2011. MHI’s diverse lineup of products and services includes shipbuilding, power plants, chemical plants, environmental equipment, steel structures, industrial and general machinery, aircraft, space rocketry and air-conditioning systems.
For more information, contact Mitsubishi Engine North America, Inc. (MENA), 1250 Greenbriar Drive, Ste. E, Addison, IL 60101, call 630-268-0750 or visit the website at www.mitsubishi-engine.com.
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