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Innovation and Trends in Truck tires Impact of safety, legislative and customer requirements on truck & bus tire developments. 14 january 2010
14

Session 61 Fredrik Eriksson

Sep 11, 2014

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Page 1: Session 61 Fredrik Eriksson

Innovation and Trends in Truck tires

Impact of safety, legislative and customer requirements on truck & bus tire developments.

14 january 2010

Page 2: Session 61 Fredrik Eriksson

agenda

Costumer / Safety requirementsRegulatory requirementsDevelopment constraintsTruck / Bus tire componentsMaterial TrendsTread Pattern trends………

Page 3: Session 61 Fredrik Eriksson

• High mileage

• Low cost per kilometer

• All season capabilities, winter traction

• Robustness, durability and retreadability

• Fuel efficiency

• High efficiency (max. load / cargo volume))

• Flexible vehicle usage (long haulage, short haulage, distribution service)

Customer requirements:

• Stability and Handling

• High load capacity

• Light weight

• Fuel efficiency

• Low noise

• Low overall diameters

FLEETS OEM’s

Page 4: Session 61 Fredrik Eriksson

Low Rolling Resistance - (new) limits for tire RR (rolling resistance)- 2 stage implementation (2012 / 2016)

Low noise emissions - tighter tire noise level requirements (2012)

Safety, wet grip - applies only to Consumer and light truck tires (at this stage)

Regulatory requirements:

EC regulation 661/2009 (13july2009)

New, more stringent requirements for tires with regard to safety, rolling resistance and rolling noise – 2012 onwards.

Page 5: Session 61 Fredrik Eriksson

EC regulation 1222/2009 (25nov2009)

EC has decided on the introduction of a “tyre labelling” system, based on EC 661/2009 regulation, and with regard to tire rolling resistance, tire noise emission and “wet grip”.

“The aim of this regulation is to increase the safety, and the economic and evironmental efficiency of road transport by promoting fuel –efficient and safe tyres with low noise levels.”

Tyre manufactures will have to communicate the fuel efficiency class as well as the external rolling noise class and, where applicable, the wet grip class in their promotional literature as well as on their web sites.

Regulatory requirements (cont’d):

Note: for truck/bus tyres, a common “wet grip” class measurement method is under discussion.

Page 6: Session 61 Fredrik Eriksson

More restrictiveemission standards upcoming

High oil prices

•Vehicle manufacturer:Emissions reductionConsumption reductionIncreased engine efficiencyLower energy losses

•Tire manufacturer:Reduction of the tire rolling resistance

Euro 6 (2012Euro 6 (2012

Euro 4Euro 5Euro 6

In addition to the “tyre specific” legislative requirements, vehicle legislations do have an impact on truck/bus tyre developments e.g.:

Regulatory requirements (cont’d):

Truck – emission standards evolution

Page 7: Session 61 Fredrik Eriksson

Impact on Tyre Development

RR

Mileage Wet Grip

Robustness

• Truck tire development is faced with a multitude of “evolving” requirements(OEM’s , legislation, fleet needs, ecological, economical, ….)

• “Conflicting” performance characteristics need to be addressed.

• “Trade Offs” in other areas to be minimized.

Modern truck / Bus tyre development;

a walk between conflicting performance requirements

Page 8: Session 61 Fredrik Eriksson

Chafer

Carcass

Wedge

Shoulder wedge

SidewallTread

Flipper

Belts

Chipper

Innerliner

BeadsBeads

Sample :

Components 41Compounds 10Steel types 5Fabric 1

Truck tire components

Apexes 1-3

To cope with these evolving requirements, continuous developments are required on a variety of tyre components

Page 9: Session 61 Fredrik Eriksson

Material Trends

Innovative Tread Compound generations:

High level silica tread compounds,for improved braking on wet“and” low rolling resistance

New Reinforcement materials:

High strength carcass and belt wires,enhanced durability, light weight

conventional compound "high silica" compound

high tensile cords

“SUPER” tensile cords

Page 10: Session 61 Fredrik Eriksson

Trends in Pattern Design

Directional tyre designsimproved traction and brakingbetter “torque” resistance

Wider tread widthsimproved braking on wetimproved stability and handling

Innovative sizeshigher load capacitylow aspect ratiohigher cargo volume

non directional directional

355/50R22.5 steer (7.5 tons axle load) 455/40R22.5 trailer < 1m diam..

Page 11: Session 61 Fredrik Eriksson

Trends in Pattern Design (cont’d)

Flat Wave "Waffle" or "3D BIS"

Increase interlocking effect, improved braking on wet & winter grip

Increased “blading” densityenhanced braking on wetbetter all season performances

New “blading technologies”improved tractionenhanced brakingall season capabilities

Page 12: Session 61 Fredrik Eriksson

9

9

999

9

9

9

9 9

9

9

9

11

79

11

7

9

11

79

11

7

7

9

11

97

11

11

9

7

117

9

0

100

Frequency

dB

0

100

Frequency

dB

0

100

Frequency

dB

Same BlockLengths

DifferentBlockLengths - RegularDistribution

DifferentBlockLengths - IrregularDistribution

Low noise tread pattern geometries

diagonal tread “block shifting”

Blocks do not impact all at the same time

L1

L2

L3

L4

L1 < > L2 < > L3 < > L4

“Pitching”different blocks lenthgs

LowerNoiseemission

Page 13: Session 61 Fredrik Eriksson

Innovative Tyre features

Built in sealantimproved safetyenhanced mobility

Soft rubber material built into casing

Specific Winter Truck/Bus tyresimproved safetyenhanced traction insever winter conditions

Page 14: Session 61 Fredrik Eriksson

SUMMARY

Ecologylow noise emissionfuel efficient

Safetyenhanced braking and tractionstability and handling

Economyhigh mileage, low cost per kmdurable and retreadable

Modern Truck and Bus tires are developed to suit today’s and futuretransport requirements in terms of: