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Medium diesel engine (MDE) is a medium-displacement four-cylinder diesel engine developed by Adam Opel AG and marketed as '1.6 CDTI Ecotec'. Production began in late 2013 at Szentgotthárd, Hungary. It is Opel's first all-aluminum diesel engine that offers power density of 85 hp per liter in most powerful version with 136 PS. Initially maximum power and torque have been increased versus the 1.7-liter engine, while fuel consumption has been reduced by up to 10 percent compared with similarly powerful 2.0-liter CDTI engine.〔(【引用サイトリンク】date=2013-04-17 )〕 This new 1.6 CDTI engine will replace the current 1.7-liter and lower-powered 2.0-liter diesel engines in a wide range of Opel models, with more- and less-powerful versions to come. The most powerful version of 1.6 CDTI engine delivering at 3,500–4,000 rpm and at 2,000 rpm was first introduced in 2013 Opel Zafira Tourer〔(【引用サイトリンク】date=2013-08-31 )〕 and later in 2014 Opel Astra J and restyled 2014 Opel Meriva B. In 2014, new versions emerged: 1.6 CDTI with 110 PS and 95 PS. Engine displacement is 1.6 L (1,598 cc) and has bore/stroke ratio of 79.7/80.1 mm with cylinder pressure of 180 bar and compression ratio of 16:1. It uses an aluminum engine block, die-cast aluminum bedplate, and aluminum cylinder head, chain-driven dual overhead camshaft valvetrain and dual continuous variable cam phasing, including weight-saving hollow sections and lobes, operate four valves per cylinder with low-friction, hydraulic roller finger followers. The pistons are made from aluminum for reduced reciprocating mass, feature a concave, shallow-bowl profile to facilitate efficient combustion and are cooled by under-skirt oil spraying. The crankshaft, with four counterweights to minimize mass, and the con-rods are in forged steel. Engine has some improvements to reduce NVH like glass-fiber reinforced plastic (GRP) cam cover, fully decoupled from the engine to reduce noise and vibration, while also saving weight compared to aluminum; composite intake manifold encapsulated in acoustic padding and an external plastic shield, significantly reducing noise emissions; mechanical crankshaft isolator reducing radiated noise and torsional vibrations in the accessory drive system; Scissor gear from the crankshaft for the timing drive system incorporating tooth profiles ground with a Low Noise Shifting (LNS) process for optimal noise reduction. More than 150 patented diesel control functions are deployed by the 1.6 CDTI’s engine control unit, developed in-house by General Motors. This advanced engine control unit (ECU), engineered in Italy (GM Powertrain Torino), Germany and the United States, will be used in all future four-cylinder diesel engines. 1.6 CDTI’s fuel consumption and Euro 6 standard emissions (effective from September 2015) are also made possible by the use of Opel’s “BlueInjection” selective catalytic reduction (SCR) system. In this environmentally friendly exhaust after-treatment process, a harmless diesel exhaust fluid named AdBlue®, consisting of urea and water, is injected into the exhaust gas. The solution decomposes into ammonia, which is then stored on a catalyst substrate. Nitrogen oxide (NOx) enters the catalyst in the exhaust gas, and is then selectively reduced to nitrogen and water. Starting in 2013, the engine replaced turbocharged 1.7 L CDTI, lower-powered 2.0 L CDTI Ecotec with 110 PS and 130 PS engines in Opel cars, and in near future it will replace 1.3 CDTI in Corsa, Meriva and Astra. The 136 PS, 320 Nm, version of the engine 1.6 CDTI (code B16DTH) is used in: * 2013 Opel Zafira Tourer * 2014 Opel Astra * 2014 Opel Meriva * 2015 Opel Mokka The 120 PS, 320 Nm, version is used in: * 2014 Opel Zafira Tourer The 110 PS, 300 Nm, version is used in: * 2014 Opel Astra * 2014 Opel Meriva The 95 PS, 280 Nm, version is used in: * 2014 Opel Meriva ==See also== *GM Medium Gasoline Engine *GM Small Gasoline Engine *List of GM engines 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「GM Medium Diesel engine」の詳細全文を読む スポンサード リンク
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