M54_technical_information.pdf

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Table of Contents
Subject
Page
M54 Engine
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Mechanical changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Performance Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Review Questions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Siemen’s MS 43.0 System
• Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
• I-P-O ................................................ 9
MS 43.0 New functions
• Electronic throttle Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
• Accelerator Pedal Sensor (PWG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
• Electronic Throttle Valve (EDK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
• Main Relay Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
• Engine Optimized Ignition Key OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
• Diagnosis Module Tank Leakage (DM-TL) . . . . . . . . . . . . . . . . . . . . . . .17
• DM-TL Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
• DM-TL Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Carry Over Functions
Inputs
• Oxygen Sensor . . . . . . . . . . . . . .
• Camshaft Sensors . . . . . . . . . . . .
• Crankshaft Sensor . . . . . . . . . . . .
• Misfire Detection . . . . . . . . . . . . .
• OBD Fault Codes . . . . . . . . . . . .
• Mass Air Meter . . . . . . . . . . . . . .
Outputs
• VANOS Control . . . . . . . . . . . . . .
• Electric Fan . . . . . . . . . . . . . . . . .
• Secondary Air Injection . . . . . . . .
• Engine Speed Limit . . . . . . . . . . .
• RZV Ignition . . . . . . . . . . . . . . . .
• Resonance - Turbulence Manifold
• Idle Speed control . . . . . . . . . . . .
• Cruise Control . . . . . . . . . . . . . . .
• Purge Control . . . . . . . . . . . . . . . .
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Initial Print Date: 02/2000
Revision Date: 6/2000
M54 ENGINE
Models: E53 X5,
SOP: 3 liter - 4/00
Objectives of the Module:
At the end of this section of the handout, you will be able to:
• Identify the changes to the M54 engines over the M52 TU engine.
• List the design objectives for the M54 engine.
Purpose of the System:
The M54 engine was developed to meet the needs for ULEV compliancy for emission con-
trol. The increase in displacement allows the engine to fit the X5 All Roads vehicle while still
meeting the demands for power and performance.
INTRODUCTION
The M54 - 6 cylinder engine is being introduced with the 2001 Model Year E53 - X5. The
displacement of the new engine for the X5 is 3 liters and the engine will replace the 2.8 liter
engine in the E46/Z3 series in 6/2000 and E39 series vehicles in 9/2000.
.
Design objectives for the M54 engine were to provide:
• Lower Emissions
• Maintain Fuel Economy
• Maintain Power and Performance levels
2
M54engMS43/ST036/6/2000
M54 ENGINE
ART-A0021216
HORSE POWER
TORQUE
M54B30
225@5900RPM
300Nm@3500RPM
BORE
STROKE
COMPRESSION
84mm
89.6mm
10.2:1
3
M54engMS43/ST036/6/20000
M54 ENGINE
Mechanical Changes
In addition to the increased displacement of the M54B30 engine, several mechanical
changes were incorporated into the engine for reduced emissions and increased fuel econ-
omy. These changes include:
• NEW PISTONS - The piston has a shorter skirt compared to the M52 TU and continues
with the graphite coating for friction and emission reducing measures. The piston rings have
been modified to reduce friction.
• CRANKSHAFT - The crankshaft for the 3 liter M54 is adopted from the S52B32 - M3
engine.
• CAMSHAFT - The camshaft for the 3 liter M54 is modified with more lift (9.7 mm) and
new valve springs to accommodate the increased lift.
• INTAKE MANIFOLD - The intake manifold is modified with shorter ram tubes (20mm
shorter on 3 liter. The diameter of the tubes is increased slightly.
• INJECTION VALVES - The diameter of the injection pintle has increased slightly for the
increased displacement of the 3 liter engine.
ART-INJECTOR
ART-0198U29
4
M54engMS43/ST036/6/2000
M54 ENGINE
MECHANICAL CHANGES
NON RETURN FUEL RAIL SYSTEM
The M54 engine with MS 43.0 control uses the non return fuel rail system introduced on
the M62 TU engine. The system meets running loss compliance without the use of the 3/2-
way solenoid valve currently used on the M52 TU engine.
ART-FUELRAIL
The regulated fuel supply is controlled by
the fuel pressure regulator integrated in
the fuel filter. The fuel return line is also
located on the filter.
The M54 engine uses an Electronic Controlled
Throttle Valve (EDK) for intake air control. The
idle control valve and turbulence function of the
intake manifold carries over from the M52 TU
engine.
5
M54engMS43/ST036/6/20000

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