www.steyr-motors.comIM STADTGUT B1 | 4407 STEYR | AUSTRIA

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M12 UIVEHICLE ENGINES

The M12 UI is a 2-cylinder unit injection engine with a horizontal paral-

lel twin piston configuration. Featuring a remarkable power output in a

most compact design, the M12 UI is proven and tested to work perfectly

under challenging ambient conditions. Furthermore, the engine can be

customized to fit specific requirements and it can also be combined to a

diesel-electric generator with a permanent magnet alternator.

MAIN FEATURES Monoblock design with excellent water cooling

Turbocharged, intercooled

Mass balancing system for smooth operation

Operational temperature range: from -32 °C to +49 °C

Multifuel capable: F-34/F-35/F-54/F-63/F-65/JP-8/JET A1/EN 590

High ICE efficiency for higher range and/or lower fuel consumption

High robustness and durability

Outstanding performance

Tested according to several civilian and military standards

Rated power: 26.4 kW @ 3600 rpm

Torque: up to 77 Nm @ 1500 rpm

Dry weight: 104 kg

FACTS

CYLINDER

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THE M12 UI AS DIESEL-ELECTRIC POWER PACKThe 2-cylinder unit injection engine can be combined with common DC alternators to create a

diesel-electric power pack for use as auxiliary power unit (APU). By adding a permanent magnet

alternator, the M12 UI becomes a very efficient genset for various applications.

The brand-new STEYR E1-400 is a highly innovative electric machine that can be added to the

M12 UI to create a diesel-electric generator with vast application potential.

Permanent magnet technology

Controller: active inverter

Nominal voltage range: 300 VDC to 400 VDC

Max. voltage range: 260 VDC to 430 VDC

Multipole high-frequency design provides low electrical ripple

Low maintenance and high reliability, watercooled

Direct engine mount for compact design

OVERALL CHARACTERISTICS 4-stroke, turbocharged, intercooled

Perfectly suited for the use as auxiliary power unit (APU)

191.

2 m

m /

7.5

3 in

133.

3 m

m /

5.2

5 in

M12 UI

COMBUSTION SYSTEM Direct Injection Diesel

DISPLACEMENT (LT) 1.06

BORE (MM) 85

STROKE (MM) 94

CHARGING SYSTEM Turbocharged, intercooled

RATED POWER (KW/HP)* 26.4/36

RATED SPEED (RPM) 3600

MAX. TORQUE (NM @ RPM)* 77 @ 1500

MIN. FUEL CONSUMPTION (G/KWH)* 225

DRY WEIGHT (KG) 104

* based on Diesel EN 590

191.

2 m

m /

7.5

3 in

225.

9 m

m /

8.8

9 in

477.6 mm / 18.8 in185 mm / 7.28 in 373.8 mm / 14.72 in

522.2 mm / 20.56 in