4M4x family
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The 4M4x family are a series of overhead camshaft direct injection diesel engines by Mitsubishi with aluminum heads, chain driven camshafts and balance shafts.
4M40
The 4M40 is a 2.8 Litre Single Overhead Camshaft engine with turbo charger and available with two forms of diesel injection. The early version of the engine used an ordinary distributor injection pump and produced 92 kW of power at 4000 rpm and 294 Nm of torque at 2000 rpm, while the later version used an electronically controlled distributor injection pump and produces 103 kW of power at 4000 rpm and 314 Nm of torque at 2000 rpm.
Technical Specifications
| Type | Longitudinally mounted 4 cylinder inline engine with single overhead camshaft and 2 valves per cylinder |
| Displacement | 2835cc (2.8 litres) |
| Bore | 95mm |
| Stroke | 100mm |
| Compression Ratio | 21:1 |
| Fuel Injection Sequence | 1,3,4,2 |
| HEAD SPECIFICATIONS | |
| Type | Aluminum Alloy with swirl combustion chambers |
| Inlet Valve Diameter | 43.00mm |
| Exhaust Valve Diameter | 37.00mm |
| Valve Face Angle | 45 º |
| Valve Clearance | Maintained by shims |
| CAMSHAFT SPECIFICATIONS | |
| Inlet Opens | 19º BTDC |
| Inlet Closes | 53º ABDC |
| Inlet Duration | 252º |
| Exhaust Opens | 60º BBDC |
| Exhaust Closes | 16º ATDC |
| Exhaust Duration | 256º |
| Overlap | 35º |
