How To Choose A Suitable Speed Ratio For The Rear Axle Of A Logistics Fleet's Tractor Procurement

Many overseas logistics fleets only focus on engine horsepower and cab configuration when purchasing tractors, often ignoring the importance of the rear axle speed ratio. Little do they know that the rear axle speed ratio directly determines the vehicle's climbing ability, starting torque, driving speed, and fuel consumption. Choosing the wrong speed ratio can lead to problems such as slow high-speed running, heavy load crawling, long-term high fuel consumption, and decreased vehicle attendance, which directly affect the overall operating income of the fleet. Overseas long-distance logistics, cross-border trunk transportation, mountainous areas, bumpy road conditions, huge differences in working conditions. To choose the right rear axle speed ratio, it is necessary to scientifically distinguish it based on actual operating scenarios. Firstly, plain high-speed standard load transportation is suitable for using small speed ratios. The common rear axle speed ratios of around 3.0 and 3.4 are advantageous because the engine cruising speed is lower, the driving speed is faster, and the whole vehicle is more fuel-efficient. This is very suitable for countries such as Choosing a small speed ratio for a fleet with quantitative and fast turnover can effectively reduce long-term fuel costs and improve single trip transportation efficiency. Secondly, in mountainous areas with multiple slopes and heavy loads, medium to large speed ratios such as 3.7 and 4.1 or above must be selected for the rear axle. A large speed ratio can amplify the transmission torque, making the vehicle start more vigorously and climb more powerful. In the face of continuous long downhill slopes and mountain roads with heavy loads, the vehicle's power reserve is sufficient and effective in avoiding the problem of weak climbing ability and frequent high-speed work, which leads to high temperature wear and greatly improves complex road conditions. Many overseas customers have a common misconception that the larger the speed ratio, the better, or the smaller the speed ratio, the more fuel-efficient. In fact, different speed ratios correspond to different working conditions, and there is no universal universal model. A large speed ratio vehicle has a large torque but a low top speed, which is not suitable for long-term Weak slope ability is not suitable for work in mountainous areas In addition, the gear of the gearbox also needs to be matched with the rear axle speed ratio. A multi gear gearbox with a small speed ratio can achieve high-speed and economical cruising, while a large speed ratio can achieve heavy load and strong power output. Improper matching of working conditions may result in power waste or insufficient power. When updating vehicles, the fleet also needs to consider the daily weight of the loaded goods, the slope of the route, and the transportation distance to comprehensively judge stability and standard load. Long distance trunk lines prioritize small speed ratios, complex mountainous areas prioritize large speed ratios, and accurately match the rear axle speed ratios to maximize the power of the tractor. Fuel consumption is more reasonable, and the failure rate is lower. This helps overseas logistics fleets achieve cost reduction, efficiency improvement, and stable.