Product News2004-0063
SubjectRef.Updated
Tyre Pressure Monitoring System (TPM)PMR 10-2832 / P24432004-08-27
ConcernsFH / FM
MarketsEurope, Australia, South Africa
Sales variantTIREPMTyre Pressure Monitoring System (TPM)
All 22.5” rims for tubeless tyres and all rims material, single and dual mounted. Note! Trailer not included!
UTIREPMWithout Tyre Pressure Monitoring System (TPM)
Introduction, saleWeek0425European production
Introduction, prod.Week0437European production
0451Australian production
0453Brazil (UTIREPM, only administrative)
ContentTyre cost is one of the highest separate costs that a truck owner has.
By controlling the tyre pressure, tyre life increases and the risk of tyre explosion decreases. Therefore, a new high tech solution, Tyre Pressure Monitoring System (TPM), will be introduced in order to make it possible for the driver to monitor the tyre pressure in the driver information display. The TPM improves the safety, increases the tyre life and gives better tyre and fuel economy.
Each tyre will have a pressure sensor connected to the airfilling nipple.
A battery with a lifetime of five years will power the sensor module.
Every sensor will send radio messages to the TPM Electronic Control Unit (ECU) every 15 minutes. Each message contains a unique sensor ID number and the current tyre pressure. A total amount of twelve wheels will be supported for the truck and sixteen for the trailer.
TPM will manage the following maximal configurations:
- Truck4 axles12 wheels1 ECU
- Dolly2 axles 8 wheels1 ECU
- Trailer4 axles16 wheels1 ECU
ContentThe system is not available for:
- FL trucks
- Spoke wheels
- Dual hole on aluminium rims
- ADR-vehiclesWill be deleted block 0451 (sales start 0439)
Safety
85% of flat tyres start as an undetected slow leak. The TPM system increases the safety by preventing tyre blowouts.
Economy
Increased uptime, about 25%, of unplanned stops are due to tyre problems. Having the correct tyre pressure gives better fuel economy and increased tyre lifetime, 50% of all tyres run with too low pressure. The consequences are higher tyre wear and also higher fuel consumption.
Driver interface
The interface to the driver is through the driver information display where it will be possible to see an outline of the truck and available trailers together with pressure data for all wheels when the vehicle is standing still.
6x2 truckTrailer
Faults
Faults indicated via icons in the display:
- Low pressure
- High pressure
- Leakage
Indicated by general fault text and fault codes:
- Loss of sensor
- Missing data
- Bad configuration
Fault details:
By looking in the diagnostic menu in the display it is possible to see a descriptive text indicating the nature of the fault and the location of the faulty tyre, for instance for a truck: “Wheel Module, Axle 2 Outer Left, Value too low”.
For trailers it is shown on which axle the faulty tyre is mounted, for instance: “…Trailer 1 Axle 2…”
Content
Low pressure detection High pressure detection
Pressure deviation
High/low pressure warnings are shown if the tyre pressure of a wheel becomes higher/lower than the threshold levels that are defined in relation to the reference pressure that is set for each axle of the vehicle.
- A yellow warning means that the current tyre pressure is not optimal from an economic point of view. The tyre pressure can also be a potential safety risk and should be adjusted.
- A red alarm means that it may be a direct safety risk to continue the trip without checking the tyres and taking appropriate action.
Detection of leakage
Leakage is detected by comparing the tyre pressures on the same axle. For twin mounted tyres the outer and the inner pairs are compared separately.
- Diff changes more than 1 bar within 2 ½ hoursyellow lamp
- Diff changes more than 1 bar within 40 hourswhite info lamp
Leakage is detected by comparing the pressure difference between left and right tyres on same the axle. A warning is shown in the display if the difference has increased by 1 bar within a certain period of time. If both left and right tyres have a leakage of approximately the same dignity a warning will come up when one of the tyres reach the limit for low pressure detection.
ContentTPM ECUECU FunctionalityThe TPM ECU receives pressure and ID from the wheel sensors. The ECU is configured so that it is known which wheel position is connected to which ID. The ECU monitors the tyre pressure over time and sends a warning message to the driver information display if the tyre pressure deviates too much from the pre-set reference pressure or if a leakage is detected.The vehicle configuration must initially be programmed to the ECU (can only be done at the Volvo workshop). The ID numbers of the wheel sensors can then be programmed either via the Information Display in the truck or via the diagnostic PC-tool in the workshop. The same applies for the reference pressure which is set for each axle.SensorWheel sensor front axleWheel sensor rear axleEach sensor has its own ID, which is sent together with the pressure value to the control unit. This eliminates the risk that wrong vehicle accepts the signal. The sensor sends pressure value via radio every 15minutes in normal use. Note! Immediate transmission on big pressure changes.
- Measure pressure
- Send on RF transmission
- Life time of sensor 5 years / 1 Mkm (battery lifetime)
Loss of sensorA warning in the driver information display indicates the loss of a sensor.
ContentTrailerNote! Trailer is not included in sales variant TIRE-PM.
The TPM system will manage up to four axles on a trailer. It will also manage the combination of dolly and trailer, but not two trailers. Diagnostics for the trailer will be possible only per axle. Trailers show only active faults codes. Communication between truck ECU and trailer/dolly is done via Radio Frequency (RF) transmission. In order to identify the trailer sensors connect the trailer and press the brake pedal once to make the trailer ECU send the information needed for TPM-configuration.TPM-equipment for trailers and retrofit kit for trucks will be available from Volvo Parts. Only working TPM-systems are Volvo TPM or Wabco IVTM.TPM truck and trailer combinations (examples):
ContentTyre pressure influence on fuel consumption and mileage
Better fuel economy with the right tyre pressure
Increased tyre lifetime with correct pressure
Fact SheetSee also Fact Sheet:Tyre Pressure Monitoring System, TIREPM (will be issued)
Sales
argumentation- Increased safety
- Better fuel economy
- Increased tyre lifetime
Pan European
list priceTyre Pressure Monitoring System, TIREPM945 €
Variant
classificationOption sales variants
RemarksIt is not recommended to use steel wheel covers for rear axle(s) since the RF transmission will be blocked.
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Volvo Truck Corporation