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DI Diesel Engines M57/M67 - Common Rail Sec. 1 P.1

Course contents/Background material

Introduction

BMW is successively developing a new family of diesel engines

with direct injection (DI) that will include 4-cylinder,

6-cylinder and 8-cylinder engines.

Following the successful introduction of the M47D20

4-cylinder engine, a new 6-cylinder engine will soon be phased

into series production.

This engine features all the design characteristics of the second

generation of direct injection diesel engines and represents the

currently most advanced diesel technology available in passen

ger

vehicles.

Thanks to its outstanding performance and high comfort properties

in conjunction with excellent exhaust quality and integral

fuel

economy, this engine enjoys a leading position in the

competitive environment.

spec. output

6-cyl

4-cyl

Displacement

KT-3692

Fig. 1: Competitive situation M47/M57

Initially, the new M57 engine will be installed in the form of a top-

of-the-range diesel engine in the 5 and 7 Series. The M67 will

enhance the top end of the diesel engine range in the 7 Series.

Parallel to this, the well-proven indirect injection engines (IDI)

will

still remain in the product range.

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BMW M57 Specifications

General

Fuel System	Common Rail Direct Injection
Valvetrain	DOHC, 4 valves per cylinder
Engine Block Material	Cast Iron
Cooling System	Liquid Cooled
Configuration	Inline
Bore	84.0 mm (M57D25, M57D30), 80.0 mm (M57TUD25), 84.0 mm (M57TUD30)
Torque Output	580 N⋅m (272–428 lb⋅ft)
Compression Ratio	18.0:1
Cylinder Head Material	Aluminium
Emissions Control	EGR, DPF (Diesel Particulate Filter)
Displacement	2.5 - 3.0 L
Stroke	90 mm
Bore x Stroke	84.0 mm x 90.0 mm (M57TUD30)