Mitsubishi 3B21 engine
Content
The 1.0-liter 3-cylinder Mitsubishi 3B21 engine was assembled in Japan from 2006 to 2014 and installed on the second generation of the W451 Smart Fortwo model, popular in Europe. Such a power unit according to the nomenclature of the Daimler-Chrysler concern is known as the Mercedes M132.
The 3B2 family also includes internal combustion engines: 3B20, 3B20T and 3B21T.
Technical characteristics of the Mitsubishi 3B21 1.0 liter engine
| Exact volume | 999 cm³ |
| Supply system | distribution injection |
| Internal combustion engine power | 61 - 71 HP |
| Torque | 89 - 92 Nm |
| Cylinder block | aluminum R3 |
| Block head | aluminum 12v |
| Bore | 72 mm |
| Piston stroke | 81.8 mm |
| Compression ratio | 11.4 |
| Features of the internal combustion engine | DOHC |
| Hydraulic compensators | no |
| Timing drive | chain |
| Phase regulator | MIVEC |
| Turbocharging | no |
| What kind of oil to pour | 3.3 liters 5W-30 |
| fuel type | AI-95 |
| Environmental class | EURO 4/5 |
| Approximate resource | 200 000 km |
The weight of the 3B21 engine is 67 kg (without attachment)
Engine number 3B21 is located on the cylinder block
Fuel consumption ICE Smart 3V21
Using the example of a 2008 Smart Fortwo with an automated transmission:
| City | 6.1 liters |
| Track | 4.0 liters |
| Mixed | 4.7 liters |
Which cars were equipped with the 3B21 1.0 l engine
| Fortwo 2 (W451) | 2006 – 2014 |
Disadvantages, breakdowns and problems of the internal combustion engine 3B21
The engine exists in two versions and a simple modification does not cause trouble
MHD hybrid warps and quickly wears out the starter-alternator belt
A broken belt causes the pump to stop and the head immediately leads due to overheating
By 100 km, the rubber rings on the candle wells are tanned and oil gets there
There are no hydraulic lifters and valve clearances need to be adjusted every 100 km
