Global InformationHercules DFXE information
| Hercules DFXE | |
|---|---|
 The DFXE powered the Diamond T Models 980 and 981 tank transporter | |
| Overview | |
| Manufacturer | Hercules Engine Company |
| Layout | |
| Configuration | Straight-6 |
| Displacement | 855 cu in (14.011 L) |
| Cylinder bore | 5+5⁄8 in (143 mm) |
| Piston stroke | 6 in (152 mm) |
| Compression ratio | 14.8:1 |
| Combustion | |
| Fuel type | Diesel |
| Output | |
| Power output | 201 bhp (150 kW) at 1600 rpm |
| Torque output |
|
The Hercules DFXE was an American diesel truck engine produced by the Hercules Engine Company.
Part of the Hercules DFX series, the DFXE is a naturally aspirated, direct injection,overhead valve, inline six-cylinder engine.[1][2] The engine had a displacement of 855 cu in (14.011 L), with a bore of 5+5⁄8 in (143 mm), a stroke of 6 in (150 mm) and a compression ratio of 14.8:1.[3][4] It developed 201 bhp (150 kW) at 1,600 rpm and a maximum 685 ft⋅lbf (929 N⋅m) of torque at 1150 rpm; 660 ft⋅lbf (890 N⋅m) at 1600 rpm.[5][6]
The DFXE was designed to requirements of the British Purchasing Commission for use in the Diamond T Model 980 tank transporter. As the Diamond T Model 980 was later adopted by the US, the DFXE was one of the few diesel engines used by US tactical trucks during World War II.[7][8]
The engine was used in upright or horizontal configurations.[9]
It was used in the Diamond T Models 980 and 981 trucks in World War Two, the Le Tourneau Model B29 Tournapull earthmover (introduced in 1945),[10] and the Oliver OC-18 crawler tractor (introduced in 1952),[11] among others.
- ^ TM55-1031, p.5.
- ^ Ware, p 29.
- ^ TM55-1031, p.5.
- ^ Ware, p 29.
- ^ TM 9-1768A, p 4.
- ^ Ware, p 46.
- ^ Doyle (2003), pp. 230–231.
- ^ TM 9-768 (1944), pp. 136–140.
- ^ TM55-1031, p.5.
- ^ Orlemann, p 33.
- ^ Wendel, pp 601-602.