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Brake and tire wear

Brake and tire wear. DATA ”Mass balance ” (total transports, turn over, PM size ) Lab ( Garg et al) Road tunnel ( using tracers ) Road side ( tracers , COPREM, PMF). Brake wear emission factors. WEAREM Sjödin et al. Wåhlin et al 2006.

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Brake and tire wear

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  1. Brake and tirewear • DATA • ”Mass balance” (total transports, turn over, PM size) • Lab (Garg et al) • Road tunnel (usingtracers) • Road side (tracers, COPREM, PMF)

  2. Brakewear emission factors

  3. WEAREM Sjödin et al

  4. Wåhlin et al 2006 NOX = 1.3 g/vkm => .72/124.3*1.3 = 7.5 mg/vkm for fine fraction

  5. RAINS

  6. See Boulter

  7. EMEP/CORINAIR see Boulter

  8. Boulter • Tyre wear • Cars = 100 mg/vkm • HDV = 1000 mg/vkm • PM10 = 10 % (up to 30%) • Brakewear • Cars =10-20 mg/vkm • HGV = 50-100 mg/vkm • 50% becomesairborne • >80% = PM10

  9. Whatdeterminesbrakewear? • Vehicle • Speed • Vehicletype (HDV, LDV…) • Braketype • Trafficconditions • City center • Highway

  10. Tire wear emission factors

  11. Whatdeterminestirewear? • Vehicle • Speed • Vehicletype (HDV, LDV…) • Tire type • Trafficconditions • City center • Highway • Road conditions

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