Sheer Driving Pleasure
BMW M
BMW M
Zertifizierung
23.06.2014
Page 1
Sheer driving pleasure
BMW M
BMW M3 Sedan and BMW M4 Coupé. Trainer presentation. Workshop II Fascination. Racing technique with the potential to win.
BMW M
Certification
23.06.2014
Page 2
BMW M3/M4. WS II – Content.
Module 1. Introduction.
Module 4. Technology.
Module 2. Design.
Module 5. Competitors.
Modul e3. Interior.
Module 6. Summary.
BMW M
Certification
23.06.2014
Page 3
Module 4 – Technology.
Design
Interior
Introduction
Technology
Summary
Competitors
BMW M
Certification
23.06.2014
Page 4
Module 4 – Technology. Introduction– Target M Automobile.
Design and development of self-contained M technologies with a characteristic of performance derived from Motorsports. Integration of M technology into coherent overall vehicle concepts, which allow for the highest level of precision in all areas. High-performance
automobiles with ultimate driving experience and uncompromised everyday usability.
BMW M
Certification
23.06.2014
Page 5
Module 4 – Technology. Engine.
High revving inline 6-cylinder M
TwinPower Turbo
– the best of both worlds:
- OUTSTANDING RESPONSE CHARACTERISTICS
- M TYPICAL HIGH-REV-CHARACTER OFFERS
EXTREME WIDE SPEED-BAND
- FULL RACE TRACK CAPABILITY
- CONSEQUENT LIGHTWEIGHT CONSTRUCTION
BMW M
Certification
23.06.2014
Page 6
Module 4 – Technology. Engine.
BMW M4
HISTORY
TECHNICAL DATA:
425 hp at 5500-7300rpm-1
406 lb-ft at 1850-5500rpm-1
CO2 194-204g/km
BMW M
Certification
23.06.2014
Page 7
Module 4 – Technology. Engine.
TECHNOLOGY
- SIX CYLINDER IN-LINE ENGINE, 3-LITRE DISPLACEMENT
- M TWINPOWER TURBO TECHNOLOGY
(BI-TURBO, EXTREMELY PRECISE DIRECT INJECTION,
VALVETRONIC)
- TRADEMARK M HIGH-REVVING CHARACTER
- RACE TRACK CAPABILITY
- FOCUS ON LIGHTWEIGHT DESIGN
BMW M4
TECHNOLOGY
TECHNICAL DATA:
DISPLACEMENT 2979 cm3
TOP RPM 7600 min-1
BMW M
Certification
23.06.2014
Page 8
Module 4 – Technology. Engine.
BMW M4
TECHNICAL DATA
425 hp at 5500-7300rpm-1 +3%
406 lb-ft at 1850-5500rpm-1 +38%
CO2 194-204g/km -26%
BMW M
Certification
23.06.2014
Page 9
Module 4 – Technology. Engine.
BMW M4
CRANKCASE
CLOSED-DECK
CYLINDER WALLS WITH LDS COATING, WITHOUT
BUSHING
-4.9 LBS VS. BMW 435i COUPE
One turbo charger for three cylinder
with 120° crankshaft angle offers
interference-free exhaust gas flow to
the turbine.
BMW M
Certification
23.06.2014
Page 10
Module 4 – Technology. Engine.
BMW M4
CRANKSHAFT
WEIGHT OPTIMISED TO DELIVER HALLMARK M
DYNAMICS
FAMILIAR M HIGH-REVVING CHARACTER
HIGH TORSIONAL RIGIDITY
-4.0 LBS VS. BMW 435i COUPE
BMW M
Certification
23.06.2014
Page 11
Module 4 – Technology. Engine.
-0,1 kg (6 Kolben) gegenüber BMW 435i Coupé
BMW M4
PISTONS
WEIGHT OPTIMISED
FAMILIAR M HIGH REVVING CHARACTER
-0.2 LBS (6 PISTONS) VS. BMW 435i COUPÈ
BMW M
Certification
23.06.2014
Page 12
Module 4 – Technology. Engine.
Double-flow oil pump
BMW M4
OIL SUMP
RACE TRACK CAPABILITY
DOUBLE-FLOW OIL RECIRCULATION PUMPS
TURBOCHARGER SUCTION SYSTEM
BMW M
Certification
23.06.2014
Page 13
Module 4 – Technology. Engine.
-1 kg gegenüber BMW 435i Coupé
BMW M4
OIL SUMP
MAGNESIUM
WEIGHT OPTIMISED
RACE TRACK CAPABILITY
-2.2 LBS VS. BMW 435i COUPÈ
BMW M
Certification
23.06.2014
Page 14
Module 4 – Technology. Engine.
Cooling power 45 kW
2 water cooler for the
charge air circuit
BMW M4
INTERCOOLER
LARGE INDIRECT INTERCOOLER
MAXIMUM DETHROTTLING
BMW M
Certification
23.06.2014
Page 15
Module 4 – Technology. Engine.
+0.1kg compared with BMW 435i Coupé (1 turbo)
Firing order:
1 5 3 6 2 4
A single turbocharger for each group of
three cylinders with a 120° crankshaft angle
results in interference-free exhaust flow to
the turbines.
BMW M4
TURBOCHARGER
OPTIMISED RESPONSIVENESS THROUGH IMPULSE
CHARGING
FLOW-ENHANCED MANIFOLDS
CHARGE PRESSURE CONTROL DESIGNED TO
OPTIMISE DYNAMICS
ELECTRIC WASTEGATE ACTUATOR
+0.2 LBS VS. BMW 435i COUPE (TURBO)
BMW M
Certification
23.06.2014
Page 16
Module 4 – Technology. Engine.
+0,1 kg gegenüber BMW 435i Coupé (1 Turbo)
2 combined turbine-manifold-units
Small, fast accelerating turbines
electric wastegate-actuator
Separate cooling circuit
Cooling circuit
BMW M4
TURBOCHARGER
OPTIMISED RESPONSIVENESS THROUGH IMPULSE
CHARGING
FLOW-ENHANCED MANIFOLDS
CHARGE PRESSURE CONTROL DESIGNED TO
OPTIMISE DYNAMICS
ELECTRIC WASTEGATE ACTUATOR FOR HIGH
PRECISION
+0.2 LBS VS. BMW 435i COUPE (TURBO)
BMW M
Certification
23.06.2014
Page 17
Module 4 – Technology. Engine.
BMW M4
EXHAUST SYSTEM
MAXIMUM DETHROTTLING
INNOVATIVE FLAP CONCEPT WITH ELECTRICALLY
ADJUSTABLE EXHAUST FLAPS
LIGHTWEIGHT CONSTRUCTION WITH SELECTIVE
WALL THICKNESS REDUCTION
DOMINANT, RECOGNISABLE SOUND
BMW M
Certification
23.06.2014
Page 18
Module 4 – Technology. Engine.
Exhaust flap
Result:
always all four
exhaust tubes
are used for the
exhaust gas flow.
Exhaust flap
BMW M4
ESHAUST SYSTEM
MAXIMUM DETHROTTLING
INNOVATIVE FLAP CONCEPT WITH ELECTRICALLY
ADJUSTABLE EXHAUST FLAPS
LIGHTWEIGHT CONSTRUCTION
DOMINANT, RECOGNISABLE SOUND
BMW M
Certification
23.06.2014
Page 19
Module 4 – Technology. Overall concept harmony.
A balanced overall concept: Perfectly coordinated measures for maximum performance, precision and agility:
SOPHISTICATED AERODYNAMICS RACE-GRADE COOLING CONCEPT HIGH-PERFORMANCE DRIVETRAIN PRECISE CHASSIS AND SUSPENSION
BMW M
Certification
23.06.2014
Page 20
Module 4 – Technology. Aerodynamics.
BMW M4
AERODYNAMICS
AIR CURTAIN
M GILL WITH INTEGRATED AIR BREATHER
AERODYNAMICALLY OPTIMISED FRONT AND REAR
POWERFULLY FORMED FRONT APRON
SMOOTH UNDERBODY
REAR SPOILER ON THE BMW M3 SALOON
INTEGRATED REAR SPOILER ON THE BMW M4 COUPÉ
BMW M
Certification
23.06.2014
Page 21
Module 4 – Technology. Cooling concept.
Charge air cooler
Transmission oil cooler
(M DCG) Additional water cooler
for high temperature
cirquit
Charge air cooler
Engine oil cooler
Main water cooler
BMW M4
COOLING
INDIRECT HIGH-PERFORMANCE INTERCOOLER
RACE TRACK CAPABLE
ENGINE AND TRANSMISSION COOLING
BMW M
Certification
23.06.2014
Page 22
Module 4 – Technology. Powertrain.
6-speed manual transmission.
Option: 7-speed M double-clutch
transmission with Drivelogic.
Both transmissions with intermediate
throttle control to reduce drag
torque.
Active M Differential
BMW M4
POWERTRAIN
LIGHTWEIGHT, HIGH REVVING CRANK
WEIGHT OPTIMISED FLYWHEEL
PRECISE, FAST-SHIFTING GEARBOX
LIGHTWEIGHT CFRP DRIVE SHAFT
HIGH-EFFICIENCY, HIGH-PERFORMANCE REAR AXLE
DIFFERENTIAL WITH ACTIVE M DIFFERENTIAL
STIFF, LIGHTWEIGHT OUTPUT SHAFT
BMW M
Certification
23.06.2014
Page 23
Module 4 – Technology. Powertrain.
6-speed manual transmission. Option:
7-speed M double-clutch transmission
with Drivelogic.
Both transmissions with intermediate
throttle control to reduce drag torque.
Active M Differential
Lightweight
wheel flange
BMW M4
POWERTRAIN
LIGHTWEIGHT, HIGH REVVING CRANK
WEIGHT OPTIMISED FLYWHEEL
PRECISE, FAST-SHIFTING GEARBOX
LIGHTWEIGHT CFRP DRIVE SHAFT
HIGH-EFFICIENCY, HIGH-PERFORMANCE REAR AXLE
DIFFERENTIAL WITH ACTIVE M DIFFERENTIAL
STIFF, LIGHTWEIGHT OUTPUT SHAFT
BMW M
Certification
23.06.2014
Page 24
Module 4 – Technology. Powertrain.
M Servotronic
with electric
steering force
support CFK spring
dome –
frontend
stiffener
spring dome –
front wall
stiffener
Forged light alloy wheels frontend stiffener
Lightweight axle
carrier front and
rear
Non-Runflat tires
BMW M4
CHASSIS
PRECISE, LIGHTWEIGHT FRONT AXLE
PRECISE, LIGHTWEIGHT REAR AXLE
ELECTRIC POWER STEERING WITH OPTIMISED
FEEDBACK
SPECIALLY DEVELOPED PERFORMANCE TIRES (MIXED
SIZES) ON LIGHTWEIGHT FORGED WHEELS
CFRP FRONT END STRUT BRACE
BMW M
Certification
23.06.2014
Page 25
Module 4 – Technology. Chassis.
Forged aluminum damper:
-6.6 lbs vs. BMW 435i Coupé
Option adaptive M suspension:
4 wheel acceleration sensors
-12.1 lbs vs. BMW 435i Coupé
M Compound brake
Option M Carbon ceramic brake
BMW M4
CHASSIS
BODY STRUCTURE WITH OPTIMISED RIGIDITY
REAR AXLE SUBFRAME BOLTED DIRECTLY TO THE
BODY
LIGHTWEIGHT SHOCK ABSORBERS;
OPTIONAL ADAPTIVE M SUSPENSION
M COMPOUND BRAKES;
OPTIONAL M CARBON CERAMIC BRAKES
BMW M
Certification
23.06.2014
Page 26
Module 4 – Technology. Chassis.
M Compound brake:
- 4 piston fixed caliper front
- 2 piston fixed caliper rear
- Brake disc front 380 x 30 mm
- Brake disc rear 370 x 24 mm
- Blue-painted calipers
Option M Carbon ceramic brake:
- 6 piston fixed caliper front
- 4 piston fixed caliper rear
- Brake disc front 400 x 38 mm
- Brake disc rear 380 x 28 mm
- Weight reduction 15.5 lbs
- Increased fading-stability
- Reduced brake disc wear
- Corrosion free
- Gold-painted calipers
- Only with 19“ light alloy wheels
BMW M4
CHASSIS
BODY STRUCTURE WITH OPTIMISED RIGIDITY
REAR AXLE SUBFRAME BOLTED DIRECTLY TO THE
BODY
LIGHTWEIGHT SHOCK ABSORBERS;
OPTIONAL ADAPTIVE M SUSPENSION
M COMPOUND BRAKES;
OPTIONAL M CARBON CERAMIC BRAKES
BMW M
Certification
23.06.2014
Page 27
Module 4 – Technology. Chassis.
BMW M4
CHASSIS
BODY STRUCTURE WITH OPTIMISED RIGIDITY
REAR AXLE SUBFRAME BOLTED DIRECTLY TO THE
BODY
LIGHTWEIGHT SHOCK ABSORBERS;
OPTIONAL ADAPTIVE M SUSPENSION
M COMPOUND BRAKES;
OPTIONAL M CARBON CERAMIC BRAKES
BMW M
Certification
23.06.2014
Page 28
Module 4 – Technology. Lightweight construction.
All-round weight reduction measures combined with high body rigidity – weight reduced by ~170 LBS (US CURB WEIGHT):
C-SMC TRUNKLID (BMW M4 COUPE)
CFK ROOF, ALSO A FIRST FOR THE BMW M3 SEDAN
CFK ROOF BOW(BMW M4 COUPE)
CFK FRONT STRUT BRACE
CFK ONE-PIECE DRIVESHAFT
BMW M
Certification
23.06.2014
Page 29
Module 4 – Technology.
Lightweight construction in detail.
Element M history (use for the 1st time) Sprung mass Unsprung mass Rotating mass Si
mp
lify
Integrated headrests E46 M3 CSL x Mechanical seat adjustment E46 M3 CSL x Deletion of rubber bearings (axle) E92 M3 GTS x Deletion of noise insulation E46 M3 x Deletion of fog lights E36 M Roadster x Tire fit instead of spare wheel E36 M Roadster x x Deletion of safety belt feeder F8x M3/M4 x Engine cover in reduced size F8x M3/M4 x
Op
tim
ize
Lightweight wheel flange F8x M3/M4 x x Wheel carrier on rear axle Aluminum, forged F8x M3/M4 x x Lightweight dual mass flywheel E9x M3 x Patented spring leg fixture on front axle E9x M3 x x Differential output shaft adapter hollow F8x M3/M4 x Piston rod at damper hollow E9x M3 x x Carbon roof E46 M3 CSL x
T
ech
no
logy
/mat
eria
l
Carbon roof arch F8x M3/M4 x Carbon spring dome – frontend stiffener F8x M3/M4 x Aluminum bonnet E46 M3 x Aluminum front side panel E60 M5 x C-SMC trunk lid E46 M3 CSL x Electronic power steering F8x M3/M4 x Lightweight rear-seat backrest / through-loading E46 M3 CSL x Aluminum front axle carrier E60 M5 x Aluminum steering and wheel guides E30 M3 Evo x Compound brake discs E36 M3 (US: E46 M3) x Carbon drive shaft, one-piece F8x M3/M4 x x Aluminum damper, forged E39 M5 x x Tube stabilizers, hollow E46 M3 CSL x Differential output shaft hollow E36 M3 3.2 x Lightweight rear axle carrier F10 M5 (there: Alum.) x x Carbon ceramic brake discs F10 M5 x Forged aluminum wheels as standard F8x M3/M4 x x Seat with lightweight-foam F8x M3/M4 x x Crank case LDS coated; excluding cast iron bush F8x M3/M4 x Magnesium oil pan F8x M3/M4 x Magnesium frame steering wheel F10 M5 x
BMW M
Certification
23.06.2014
Page 30
Module 4 – Technology. Lightweight construction.
-5 kg gegenüber BMW 435i Coupé
C-SMC internal leaf
SMC external leaf
With integrated rear
spoiler
SMC external leaf
Fixing elements steel
(2x)
BMW M4
C-SMC BOOT LID
CARBON FIBER – SHIELD MOLDING COMPOUND
WEIGHT REDUCTION OF 11 LBS, E.G. THROUGH USE OF
CFRP REINFORCED STRUCTURE
INTEGRATED GURNEY FOR OUTSTANDING AERODYNAMICS
DISTINCTIVE APPEARENCE INSPIRED BY THE BMW M3 CSL
-11 LBS COMPARED TO BMW 435i COUPE
BMW M
Certification
23.06.2014
Page 31
Module 4 – Technology.
Lightweight construction.
-5 kg gegenüber BMW 435i Coupé
BMW M4
CFRP-ROOF
WITH CONTOURED ROOFLINE
VISIBLE CFRP STRUCTURE
CONTOURED ROOF LINE
WEIGHT REDUCTION
-11 KG COMPARED TO BMW 435i COUPE
BMW M
Certification
23.06.2014
Page 32
Module 4 – Technology.
Lightweight construction.
BMW M4
CFRP ROOF BOW
HYBRID CONSTRUCTION
-3,3 LBS COMPARED TO BMW 435i COUPE
BMW M
Certification
23.06.2014
Page 33
Module 4 – Technology.
Lightweight construction.
BMW M4
CFRP-FRONT END STRUT BRACE
INCREASED FRONT END STIFFNESS
WITH ONLY 3.3 LBS OF TOTAL WEIGHT
ENHANCED DRIVING DYNAMICS
INCREASED STEERING PRECISION AND ACCURACY
BMW M
Certification
23.06.2014
Page 34
Module 4 - Technology. Lightweight construction.
BMW M4
CFRP ONE-PIECE DRIVE SHAFT
HELPS TO REDUCE ROTATING MASS
INCREASED STIFFNESS
BETTER ACCELERATION AND THROTTLE RESPONSE
-11.7 LBS VS. BMW 435i COUPE
BMW M
Certification
23.06.2014
Page 35
Module 4 - Technology. Endurance testing.
Street endurance test, up to 120,000 miles, customer-oriented mixed road profile, maximum allowed speed and dynamics, 60% Autobahn / 40% overland.
Engine-drive train-full load test Miramas (F), 20.000 miles (per transmission variant), frequent gear changes.
Nürburgring full load test, focus engine-chassis-brakes, 5.000 miles (~400 laps; equals ~200.000 miles at normal load).
Maximum speed endurance test Nardo (I), focus car body exterior and aerodynamics, ~1.000 miles.
Bad road endurance test (in South European countries), 20.000 miles; focus chassis-car body.
Exhaust street endurance test USA: mixed road profile, ~120.000 miles, focus exhaust behavior over lifecycle.
Street endurance test China (specific streets and gas), 20.000 miles / max. 1 year.
Dynamic corrosion test (salt bath, vibration circuit, climate chamber).
BMW M
Certification
23.06.2014
Page 36
Module 4 - Technology. Development testing.
Driving dynamics test Miramas (F): Driving dynamics, slalom, lane change (high friction test).
Heat test on race tracks; et.al. in Button Willow (US), focus cooling system.
Heat test South Africa and USA, various test cycles.
Coldness test Arjeplog (S): engine / drive train cold-start and driving behavior; chassis: low friction test. Focus: chassis, differential lock and control systems adjustment, winter tires, overall adjustment.
Coldness test USA/CA/Alaska: mainly engine, coldness in combination with height; also snow dust packing.
Alps testing: mixed road conditions including low/high friction and height; focus driving dynamics, chassis, control systems.
Water crossing slow / fast.
Curbstone approach/descent test, below car clearance test, loading of car, drive over obstacle, …
Numerous rigidity tests; focus axles, brakes, car body (e.g. multiple components car body test).
Several crash tests.
BMW M
Certification
23.06.2014
Page 37
BMW M3 Saloon and BMW M4 Coupé. Facts overview.
New 3.0-litre inline six-cylinder petrol engine with M TwinPower Turbo technology and
425 hp – high-performance turbo engine with maximum engine speed of 7,600 rpm-1.
Maximum torque of 406 lb-ft available from just 1850 rpm-1 – turbocharging ensures noticeably
more torque at lower engine speeds than the V8 predecessor.
7-gear DCT transmission with integrated Launch Control.
Six-speed manual transmission with throttle blipping.
Curb weight of just 3,530 lbs (M4 Coupe 6MT) thanks to intelligent lightweight construction to the
smallest detail: standard features include CFRP roof, CFRP driveshaft, aluminum hood with
powerdome and front fenders.
Exhaust system with innovative flap concept for increased efficiency and a striking M sound.
Newly developed electro-mechanical M Servotronic steering with three settings for very high
precision and authentic feedback from the road.
Unique equipment: Active M differential, LED light, Head-Up Display (optional), M Carbon
Ceramic Brakes (optional).