Navistar DT engine
The Navistar DT 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. Prior to 1986, Navistar International, then known as International Harvester Company, used the DT engine in farm and construction equipment.
| Navistar DT engine | |
|---|---|
| Overview | |
| Manufacturer | Navistar International |
| Production | 1971–2016 1971–2019 (Mexico) |
| Layout | |
| Configuration | Inline-6 |
| Displacement | 360 / 408 / 466 / 530 / 570 cu in (5.9 / 6.7 / 7.6 / 8.7 / 9.3 L) |
| Cylinder bore | 4.59 inches |
| Valvetrain | OHV, 2 or 4 valves per cylinder |
| Combustion | |
| Turbocharger | variable and fixed geometry turbocharged |
| Fuel system | direct injection and HEUI (hydraulic electronic unit injection) |
| Fuel type | Diesel |
| Output | |
| Power output | 170-350hp (commercial), 375hp military |
From 1997 to 2004, the DT was also rebadged and sold by Detroit Diesel as the Series 40.
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