Tractive Performance of Wheeled Tractor Based on OECD Code Test Reports

Tractor is core of agricultural machinery industry, and tractive performance is one of important performance of tractor．Through research on tractive performance of OECD code test reports, it was shown that, under four-wheel drive and no counterweight conditions, 85.1% of tractors have a maximum traction ratio greater than 400 N/kW, 86.5% of tractors have a maximum traction power percentage greater than 75%, and average maximum traction ratio fuel consumption was 274.59 g/（kW·h）．Heavy tractors have better traction performance than large tractors and also better than medium-sized tractors．94.6% of tractors have a minimum usage specific mass greater than 44 kg/kW, and a minimum usage specific mass of 50 kg/kW to 55 kg/kW was optimal range for maximizing tractor traction performance．Different gear shifting methods affected traction performance of tractors．The maximum traction ratio of continuously variable transmission tractors was greater, and the maximum traction ratio fuel consumption of power shift transmission tractors was lower．Both traction performance was better than mechanical transmission tractors．