Mitsubishi 6D22-T

The Mitsubishi 6D22-T is an 11.1 L (11,149 cc, 680.0 cu·in) straight-six, water-cooled turbocharged diesel engine, manufactured and used by Mitsubishi Fuso Truck and Bus Corporation.

The MMC 6D22-T has a cylinder block with wet type liners, an cylinder head with OHV (overhead valves), and two valves per cylinder. The 6D22-T compression ratio is 16.0:1. Cylinder bore and piston stroke are 130.0 mm (5.12 in) and 140.0 mm (5.51 in), respectively.

The Mitsubishi 6D22T engine produced from 219 PS (161 kW; 216 HP) at 1,500 rpm to 273 PS (201 kW; 270 HP) at 2,200 rpm of maximum output power.

General information

Engine Specifications
Engine code	6D22-T
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
Horsepower	From 219 PS (161 kW; 216 HP) at 1,500 rpm to 273 PS (201 kW; 270 HP) at 2,200 rpm
Torque output	–
Injection order	1-5-3-6-2-4
Dimensions (L x H x W):	1,390 x 872 x 1,162 mm (54.7 x 34.3 x 45.7 in)
Weight	1,010 kg (2,227 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-T turbo 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 16.0:1. 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:		16.0:1
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)