Mitsubishi 4B4 engine
| Mitsubishi 4B4 engine | |
|---|---|
| Overview | |
| Manufacturer | Mitsubishi Motors |
| Production | 2017–present |
| Layout | |
| Configuration | 4-cylinder |
| Displacement | 1.5 L (1,499 cc) |
| Cylinder bore | 75 mm (2.95 in) |
| Piston stroke | 84.8 mm (3.34 in) |
| Cylinder block material | Aluminum die cast |
| Cylinder head material | Aluminum die cast |
| Valvetrain | Direct acting DOHC, 16 valves, continuously variable MIVEC intake valve timing |
| Compression ratio | 10.0:1 |
| Combustion | |
| Turbocharger | with intercooler |
| Fuel system | Direct injection |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | 120 kW (161 hp) |
| Specific power | 80.1 kW (107.4 hp) per litre |
| Torque output | 250 N⋅m (184 lb⋅ft) |
| Chronology | |
| Predecessor | Mitsubishi 4B1 engine |
The Mitsubishi 4B4 engine is a turbocharged, all-alloy inline four-cylinder engine from Mitsubishi Motors, derived from the 4A9 engine introduced in 2004. Although smaller than the 4B1 engine it succeeds, the 4B4 is intended to match its performance.
Engine family characteristics
The engine was developed to meet new performance, weight, and emissions standards, and is derived from the earlier 4A91 engine. It is used mainly in compact and mid-size crossover SUVs. Peak torque is delivered from 1,800 to 4,500 rpm.
4B40
Specifications
| Engine type | Inline turbo/intercooled 4-cylinder DOHC 16v MIVEC |
| Displacement | 1.5 L |
| Bore x Stroke | 75 mm × 84.8 mm (2.95 in × 3.34 in) |
| Compression ratio | 10.0:1 |
| Fuel system | Direct injection (high-pressure) combined with port injection (low-pressure); both fuel rails are returnless, with the high-pressure rail fitted with a pressure sensor. |
| Peak power | 120 kW (161 hp) at 5500 rpm |
| Peak torque | 250 N⋅m (184 lb⋅ft) at 1800 to 4500 rpm |
Applications
- 2017–present Mitsubishi Eclipse Cross[1]
- 2023–present Mitsubishi Outlander (with mild hybrid)[2][3]
- 2025–present Mitsubishi Destinator
See also
References
- ↑ "Mitsubishi Motors applies Outlander's platform to new compact SUV". Japan Today. 2017-03-07. Retrieved 2025-03-18.
- ↑ "Mitsubishi Motors Starts Sales of the All-New Outlander in China" (Press release). Tokyo, Japan: Mitsubishi Motors. 2022-11-21. Retrieved 2023-01-01.
- ↑ Gauthier, Michael (2025-07-17). "Mitsubishi's Best-Selling Vehicle Is Going Hybrid-Only For 2026". Carscoops. US: Carscoops. Retrieved 2025-07-17.