I According to the standard:
1. GB/T 9743-2024 Passenger Car Tires
2. GB/T 29040-2012 Automotive Tire Rolling Resistance Test Method - Correlation of Single-Point Testing and Measurement Results
3. Domestic GB/T 18861-2012 Automotive Tire Rolling Resistance Test Method
4. GB/T 29040-2012 Automotive Tire Rolling Resistance Test Method: Single Point Test and Correlation of Measurement Results
5. United States: SAE J1269-2006 Procedure for Measuring Rolling Resistance of Passenger Car, Light Truck, Highway Truck, and Bus Tires
6. International: ISO 18164-2005 Methods for Measuring Rolling Resistance of Passenger Car, Truck, Bus, and Motorcycle Tires
7. International: ISO 28580:2009(E) Methods for Measuring Rolling Resistance of Passenger Car, Truck, and Bus Tires
II. Product Introduction:
1. Definition of tire rolling resistance: The energy converted from mechanical energy to thermal energy when a tire rolls over a unit distance on a horizontal road, i.e., the energy consumed by the tire rolling over a unit distance on a horizontal road. The primary environmental impact of tires occurs during the usage phase, with tire rolling resistance accounting for a significant portion of this impact.
2. Tire rolling resistance directly affects the performance of tires, such as tread wear, carcass heat generation, high-speed durability, and power performance, while also impacting vehicle fuel consumption and environmental pollution. With growing environmental awareness and the influence of global energy crises, tire rolling resistance has garnered increasing attention in the tire and automotive industries due to its direct impact on vehicle fuel efficiency and exhaust emissions.
3. Product Indicators:
1. Host: Vertical rack with tire cooling device
2. Test workstation: 1 workstation
3. Loading method: Servo valve closed-loop loading method
4. Test speed: up to 140 km/h
5. Maximum test force: 30,000 N, indication accuracy ±1% starting from 20% FS
6. Test speed range: 20～120 km/h
7. Drum radial runout: less than 0.25mm
8. The unbalance of the drum is less than 5g
9. Drum surface roughness: less than 3.2μm
10. Drum diameter: Φ2000mm
11. Drum head width: 400mm
12. Test wheel diameter: 12-23"
13. Test wheel width: 4-12"
14. Tread outer diameter: Φ400 ~ Φ1200
15. Display cumulative test count and mileage: 10^7, automatic shutdown upon reaching the set count
16. Total motor power: 45 kW
17. Load sensor: 3T
18. Inflation pressure: Max. 1.0 MPa.
19. The total weight of the equipment is approximately: 7T
20. Loading method: Closed-loop loading control
21. Total machine power: 55 kW.
22. Overall equipment dimensions: approximately 5500*1700*2000mm