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The Navistar DT (Diesel Turbocharged or Diesel Turbo) engine family is a line of mid-range inline-6 diesel engines.With horsepower ratings ranging from 170 hp (130 kW) to 350 hp (260 kW), the Navistar DT engines are used primarily in medium-duty truck and bus applications such as school buses, although some versions have been developed for heavy-duty regional-haul and severe-service applications.
Diesel engines are typically well suited to turbocharging due to two factors: A "lean" air–fuel ratio, caused when the turbocharger supplies excess air into the engine, is not a problem for diesel engines, because the torque control is dependent on the mass of fuel that is injected into the combustion chamber (i.e. air-fuel ratio), rather than the quantity of the air-fuel mixture.
The Duramax I4 engine is a family of turbocharged diesel I4 engines sold by General Motors in 2.5 and 2.8 liter sizes as an option for the Chevrolet Colorado, GMC Canyon, Chevrolet Express, and GMC Savana in southeast Asia and Oceania (Australia / New Zealand) from 2012, and in North America from 2016 through 2022.
The International Harvester Company (IHC) has been building its own proprietary truck engines since the introduction of their first truck in 1907. International tended to use proprietary diesel engines. In the 1970s, IHC built the DVT 573 V-8 diesel of 240 and 260 hp (179 and 194 kW) but these were not highly regarded and relatively few were sold.
The 4DR6 is a direct injection turbo version with 17.5:1 compression ratio and Mitsubishi TD04-1 turbocharger that produced up to 94 PS (69 kW) and 21.0kgm of torque. Both of these engines were used in large forklift trucks, as well as Canter models and the Mitsubishi J20 and J50 series Jeep.
It is a family of 3-cylinder and 4-cylinder diesel engines featuring modular diesel engine system (MDB (Modularer Diesel Motor Baukasten)), [3] [4] [5] with dual-loop EGR system, with high pressure EGR and a cooled low-pressure EGR loops; variable valve train (VVT) with a camshaft adjuster, Bosch CRS 2-20 2000 bar common rail injection system ...
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This engine was also used by JASO, the Japanese Automotive Standards Organization, for their diesel oil Detergency Test procedure (M 336:1998) from 1998 until engine assemblies and parts became unavailable in 2009. [9] [10] 82 PS JIS (60 kW; 81 bhp) at 4300 rpm (JDM) 75 PS ECE (55 kW; 74 bhp) at 4300 rpm (Europe) [11]