Engineering:Isuzu 6H engine
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| Isuzu 6H Engine | |
|---|---|
| Overview | |
| Manufacturer | Isuzu and General Motors |
| Layout | |
| Configuration | Inline-6 |
| Displacement | 7.1–8.2 L; 434.9–502.0 cu in (7,127–8,226 cc) |
| Cylinder bore | 115 mm (4.53 in) |
| Piston stroke | 125 mm (4.92 in) |
| Block material | Gray iron |
| Head material | Cast iron |
| Valvetrain | SOHC 4 valves x cyl. |
| Compression ratio | 17.5:1, 17.0:1 for 300 hp (224 kW) |
| Combustion | |
| Turbocharger | With Intercooler |
| Fuel system | High-pressure common-rail direct injection |
| Fuel type | Diesel |
| Cooling system | Water-cooled |
| Output | |
| Power output | 165–300 PS (121–221 kW) |
| Torque output | 520–860 lb⋅ft (705–1,166 N⋅m) |
The Isuzu 6H is a family of inline-6 cylinder Diesel engine installed in Isuzu medium duty trucks, and also installed in GM medium-duty trucks as the Duramax LG4. It is mated to the Allison 2500, 3000 and 3500 Series transmissions.
Engine Specifications
6HK1/Duramax LG4
- Displacement: 7.8 to 7.8 L; 475.1 to 475.4 cu in (7,785 to 7,790 cc)
- Bore and stroke: 115 mm × 125 mm (4.53 in × 4.92 in)
- Block: gray iron
- Cylinder head: cast iron
- Fuel cutoff: 2400 rpm
- Aspiration: Turbocharged and Intercooled
- Valvetrain: SOHC, 24 Valve
- Compression: 17.5:1 (17.0:1 for 300 hp (224 kW) motor)
- Injection: high-pressure common-rail direct injection
- Power / Torque: 200 bhp (149 kW) to 300 bhp (224 kW), 520 lb⋅ft (705 N⋅m) to 860 lb⋅ft (1,166 N⋅m)[1]
6HH1
- Displacement: 8,226 cc (8.226 L; 502.0 cu in)
- Bore and Stroke: 115 mm × 132 mm (4.5 in × 5.2 in)
- Aspiration: Naturally Aspirated
- Valvetrain: OHC 24 valve
- Compression Ratio: 18.5:1
- Injection: Reformed Bosch, Inline Injection Pump with Automatic Timer and All-Speed Mechanical Governor
- Power / Torque: 173–200 hp (175–203 PS) and 47–51 kg⋅m (340–370 lb⋅ft)
6HE1
- Displacement: 7,127 cc (7.127 L; 434.9 cu in)
- Bore and Stroke:110 mm × 125 mm (4.3 in × 4.9 in)
- Aspiration: Naturally Aspirated and Turbocharged
- Valvetrain: Direct Injection 24 valve
- Compression Ratio: 16.9:1
- Injection: Direct Injection
- Power / Torque: 165–260 hp (167–264 PS) and 46–77 kg⋅m (450–760 N⋅m; 330–560 lb⋅ft)
Engine Variants
| Model | Displacement | Output | Notes |
|---|---|---|---|
| 6HE1-N | 7.1 L; 434.9 cu in (7,127 cc) | 175 PS (129 kW) | |
| 6HE1-S | 195 PS (143 kW) | ||
| 6HE1-TCN | 220 PS (162 kW) | ||
| 6HE1-TCS | 250 PS (184 kW) | ||
| 6HH1-N | 8.2 L; 502.0 cu in (8,226 cc) | 175 PS (129 kW) | |
| 6HH1-C | 185 PS (136 kW) | ||
| 6HH1-S | 210 PS (154 kW) | ||
| 6HL1-N | 7.2 L; 437.3 cu in (7,166 cc) | 180 PS (132 kW) | |
| 6HL1-S | 205 PS (151 kW) | ||
| 6HK1-TCR | 7.8 L; 475.4 cu in (7,790 cc) | 205 PS (151 kW) | |
| 6HK1-TCN | 240 PS (177 kW) | ||
| 6HK1-TCC | 260 PS (191 kW) | ||
| 6HK1-TCS | 280 PS (206 kW) | ||
| 6HK1-TCH | 300 PS (221 kW) | ||
| Duramax LG4 7800 | 275 PS (202 kW) | used in GMC medium-duty trucks |
Vehicles
- Isuzu F-Series
- Chevrolet T-Series
- Isuzu H-Series
References
- ↑ "6H Diesel Specifications: 2007 EPA Compliant". http://www.isuzucv.com/engines/6h_specs.html. Retrieved August 10, 2010.
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