yzr-m1 technical presentation

YZR-M1 TECHNICAL PRESENTATION
- The evolution of the YZR-M1 during the 990cc period -
Contents
Development objectives YZR-M1
Evolution of the YZR-M1 during ’02 / ‘06
YZR-M1 development in 2006
Conclusion
Development objectives YZR-M1
Chassis
Maximize agility
Engine
Best balance
Power and Drivability
EMS
Direct Natural
Feeling
2006
YZR-M1 Concept
2004
- Fly-by-wire (FBW)
throttle system
- Start Control System
2005
Uneven firing order
4-valve engine
Frame without cross member
2003
2002
Engine Brake Control
( ICS System )
Evolution of YZR-M1
Development objectives of YZR-M1
Chassis
Low drag
fairing
Engine
Well balanced
frame
Mass
centralization
High REV & High power
Better fuel economy
* Compared to 2005
Compact & Light weight
Engine Management System
Ridable Torque Control
Natural feeling engine brake
Long
swing arm
Short wheelbase
High reliability
Chassis
Evolution of frame
No cross member
Air intake passage
’02 - ’04
’05 - ’06
Evolution of aerodynamics
Front: Decrease CD*A means more speed and acceleration.
These 2 subjects are incompatible .
Side: Decrease yaw characteristics means better agility .
Mass centralization
Engine constitution
Change of fuel tank
Well balanced
4 axis location
2003
2005
The relocation of elec. parts
( ECU, Data logger )
Shorten AXLE distance
Below meter panel
On the tank rail
Result of mass centralization
Mass centralization reduces
bike inertia
YAW
PITCH
ROLL
Engine
Engine configuration
In-line engine is best configuration to achieve M1 development objective
Shorter Wheelbase
Longer rear arm
Shorten AXLE Dist.
Evolution of engine specification
Better
ridability
More
power
5Valve
Short stroke
4Valve
Even-firing
Uneven-firing
Gear Train
Evolution of engine performance
‘06
‘05
25Kw
increase
‘03
‘04
‘02
38Kw
Difference
500cc
3000rpm increase
Engine Management System (EMS)
Evolution of EMS
2006
2005
2004
2003
2002
Engine Brake Control
Air by-pass
Clutch control
Throttle
Engine Brake Control
Torque Control
Traction Control
Engine Brake Control Wheely Control
Torque Control
Launch Control
Traction Control
Fly-by-wire system
ICS System
2006 YZR-M1 Development
Target of 2006 YZR-M1 Development
< EMS: Easier to handle >
- New strategy of engine brake
- FBW Throttle control
< Engine: More power >
- Change bore x stroke
- FBW throttle
< Chassis: More agility/stability >
- New design frame
- Modified rear shock mount
Modification from 2005
< Chassis >
< Engine >
Bore x stroke
< EMS >
F-B-W throttle
More rev & power achieved
‘06
‘05
EG Torque Control
EG Brake Control
Wheely Control
Stiffer Rear Shock Mount
Chassis
2006 Development flow of YZR-M1
Qatar
Test/Feb
Engine
IRTA
JEREZ
R5
LeMans GP
R4
R3
ISTGP ChinaGP
R13
SepangGP
R12
BrnoGP
Conclusion
1) YZR-M1 is designed and developed to achieve the best handling.
This concept feeds back to production bikes YZF-R1, YZF-R6.
2) The adaptation of “uneven-firing” technology to the in-line 4 cylinder
engine has made a big improvement in ridability. This technology is
spreading in MotoGP.
3) Through 2002 – 2006 the engine management system has seen a lot of
progress. Each year sees an increase in the number of items on the bike
that are controlled by the EMS system.