The Mitsubishi 6D22-TC is an 11.1 L (11,149 cc, 680.0 cu·in) straight-six, water-cooled turbocharged and intercooled diesel engine, manufactured and used by Mitsubishi Fuso Truck and Bus Corporation.
The MMC 6D22-TC has a cylinder block with wet type liners, an cylinder head with OHV (overhead valves), and two valves per cylinder. The 6D22-TC compression ratio is 15.5:1. Cylinder bore and piston stroke are 130.0 mm (5.12 in) and 140.0 mm (5.51 in), respectively.
The Mitsubishi 6D22TC engine produced from 243 PS (179 kW; 240 HP) at 1,500 rpm to 309 PS (227 kW; 304 HP) at 2,200 rpm of maximum output power.
General information
| Engine Specifications | |
| Engine code | 6D22-TC |
| Layout | Straight-6, vertical |
| Fuel type | Diesel |
| Production | – |
| Displacement | 11.1 L (11,149 cc, 680.0 cu·in) |
| Injection pump | Bosch in-line type |
| Power adder | Turbocharger with intercooler |
| Horsepower |
From 243 PS (179 kW; 240 HP) at 1,500 rpm to 309 PS (227 kW; 304 HP) at 2,200 rpm |
| Torque output | – |
| Injection order | 1-5-3-6-2-4 |
| Dimensions (L x H x W): | 1,401 x 882 x 1,210 mm (55.2 x 34.7 x 47.6 in) |
| Weight | 1,015 kg (2,235 lbs) |
Cylinder block
The engine has a drop-forged steel crankshaft with balance weights and seven main bearings. The piston, made of aluminum alloy casting, has a toroidal-type combustion chamber at its top. The 6D22-TC motor has two compression and a single oil control ring. The cylinder bore is 130.0 mm (5.12 in), piston stroke is 140.0 mm (5.51 in) and compression ratio rating is 15.5:1. The crankshaft main journal diameter is 100.0 mm (3.94 in) and the crankpin diameter is 84.0 mm (3.30 in).
| Cylinder block | ||
| Cylinder block alloy | Cast iron | |
| Compression ratio: | 15.5:1 | |
| Cylinder bore: | 130.0 mm (5.12 in) | |
| Piston stroke: | 140.0 mm (5.51 in) | |
| Number of piston rings (compression / oil): | 2/1 | |
| Number of main bearings: | 7 | |
| Block Height: | – | |
| Cylinder liner inner diameter: | 130.014-130.054 mm (5.1187-5.1202 in) | |
| Piston skirt diameter | – | |
| Piston ring side clearance: | Top | 0.060-0.0110 mm (0.0024-0.0004 in) |
| Second | 0.070-0.100 mm (0.0028-0.0039 in) | |
| Oil | 0.030-0.060 mm (0.0012-0.0024 in) | |
| Crankshaft main journal diameter: | 100.0 mm (3.937 in) | |
| Crankpin diameter: | 84.0 mm (3.3071 in) | |
Cylinder head
| Cylinder head | |
| Valve Arrangement: | OHV, gear driven |
| Valves: | 12 (2 valves per cylinder) |
| Intake valves diameter: | – |
| Exhaust valves diameter: | – |
| Intake valve timing: | – |
| Exhaust valve timing: | – |
| Inlet valves length: | – |
| Exhaust valves length: | – |
| Intake valve stem diameter: | 11.950-11.960 mm (0.4705-0.4709 in) |
| Exhaust valves stem diameter: | 11.910-11.930 mm (0.4689-0.4697 in) |
| Camshaft journal diameter: | 29.935-29.955 mm (1.1785-1.1793 in) |
| Valve spring free length (INTAKE/EXHAUST) |
Outer: 89.38 mm (3.5189 in) Inner: 65.04 mm (2.5606 in) |
Maintenance data
| Compression pressure | |
| Standard | 2.75 MPa (28 kgf/cm2) |
| Minimun | 1.96 MPa (20 kgf/cm2) |
| Compression differential limit between cylinders | 0.39 MPa (4 kgf/cm2) |
| Valve clearance | |
| Intake valve clearance (COLD): | 0.40 mm (0.0157 in) |
| Exhaust valve clearance (COLD): | 0.60 mm (0.0236 in) |
| Oil system | |
| Recommended engine oil | CC or better |
| Engine oil capacity |
Without filter: 27.0 L (for general power) or 25.0 L (for construction machinery) Filter: 4.0-4.5 L |
|
Oil pressure (Oil temperature at 70 to 90″C) |
At idle speed: 145 kPa (1.5 kgf/cm2 or more At maximum speed: 295 to 490 kPa (3 to 5 kgf/cm2) |
| Fuel system | |
| Injection pump | Bosch in-line type (model P) |
| Plunger diameter | 12.0 mm (0.4724 in) |
| Injection nozzle |
Hole type (1-spring nozzle) – model DLLA Hole type (2-spring nozzle) – model DLLA |
| Injection pressure |
Hole type (1-spring nozzle): 21.6 MPa (220 (kgf/cm2) Hole type (2-spring nozzle): 17.7 MPa (180 (kgf/cm2) |
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