How Important the Cooling System to Off-road Vechicles?by Asiautos Auto Parts(vehicles Aftermarket Parts Expert)

In the current automobile market where off-road vehicles are popular, many car owners choose to purchase SUVs and pickup trucks with off-road fun attributes in order to "go wild" during the holidays. However, in the off-road, in addition to the hard-core configurations such as chassis, engine, and four-wheel drive that we usually pay attention to, the heat dissipation performance of the engine greatly improves the overall performance of the engine under high temperature extreme conditions. Today, let's briefly analyze and explain it for you.

High-performance cooling system is also called thermal management system. There are two common methods: air cooling and liquid cooling (water cooling). Taking off-road pickup trucks as an example, they basically use water cooling + cooling fan system.

 Compared with the common cooling fans on ordinary pickup trucks, off-road pickup trucks are usually equipped with high-performance cooling fans to bring more efficient cooling power in order to meet higher-level off-road needs. At present, the common air-cooled cooling systems on the market include high-performance cooling fans and silicone oil fans. Let's interpret them separately.

First of all, let's talk about high-performance cooling fans. For example, Great Wall's self-developed 850W cooling fan can increase the cooling efficiency of the fan by 42%, which provides more efficient cooling efficiency for the whole vehicle.

 At the same time, in order to ensure the heat dissipation stability during off-road. Off-road pickups will also be equipped with high-performance cooling modes. For example, the off-road cooling mode of the Dadao Gan Tanzhe is equipped for high-temperature environments. After it is turned on, the sensor monitors the temperature of the engine cylinder head and controls the cooling of the stepless fan in real time, thereby improving the overall cooling efficiency of the engine and avoiding high temperature.

In addition to such high-performance cooling fans and cooling modes, there is another hard-core fan in the off-road circle, which is the silicone oil fan. Silicone oil fans are commonly used in off-road vehicles that often travel under extreme conditions. Its main feature is to transmit power through the shear viscosity of silicone oil rather than direct mechanical connection, which brings higher reliability and comfort. At the same time, it relies on the gradual filling of silicone oil to control the speed, which can bring stronger adaptability to off-road vehicles in different working conditions.

Silicone oil fans are provided as optional equipment in the Shanhai Cannon performance version and the 2.4T off-road cannon. You can choose according to your personal needs when purchasing the car. But it is worth noting that compared with traditional electric drive fans, the speed of silicone oil fans is limited by the engine and cannot be increased independently. In addition, the gap between the radiator causes air volume loss and increased noise, but the reliability of silicone oil fans is unquestionable.

Having said so much, let me recommend several pickup trucks with efficient cooling systems and good cost-effectiveness for your reference.

Great Wall 2.4T Off-Road Cannon

The new off-road pickup truck launched at the end of August, as the first domestic pickup truck with exclusive off-road attributes, is equipped with an 850W high-performance cooling fan, matching the industry's first off-road thermal management mode, to meet the needs of vehicles in high temperature weather and continuous high-load off-road conditions. At the same time, the 2.4T Off-Road Cannon is equipped with six all-terrain driving modes: snow, mud, sand, 2H, 4H, and 4L, which can easily cope with the difficult journey of all weather, all road conditions, and all scenes.

In addition, the 2.4T off-road running has undergone an unprecedented upgrade in the power part, with a maximum net power of 135kW, a maximum torque of 480N·m at 1500 rpm, and a 20% improvement in comprehensive performance, which is the first in the domestic single-turbo diesel pickup torque. The vehicle engine can also support excellent low-torque performance, reaching the peak torque range at only 1500 rpm, which is no problem in facing extreme off-road scenes.

Jiangling Avenue Explorer

This car is Jiangling's signature off-road pickup truck. In order to challenge its extreme adaptability, we conducted an off-road test in Lop Nur in the hottest July. Jiangling Avenue Explorer is equipped with BorgWarner's part-time four-wheel drive system. Switching to 4H mode can achieve a 50:50 distribution of power. Even at a low speed, it is difficult to form a collision wind cooling situation, and there is no overheating throughout the whole process.

At the same time, the whole vehicle is equipped with K-MAN nitrogen shock absorbers. Due to the addition of inert gas nitrogen, the shock absorber system has a lower heat conduction and expansion coefficient, which ensures that there will be no problems due to high temperature. In addition, the shock absorber system has a 2.5-inch pipe diameter, which is thicker than the general shock absorber, and adopts a single-barrel structure, so that the working barrel is in direct contact with the outside world, effectively improving the heat exchange efficiency and heat dissipation capacity.

In addition to the body hardware, in order to avoid the engine torque limit or even boiling, the engine is also equipped with the above-mentioned off-road cooling mode, which can be controlled by the stepless fan to improve the overall heat dissipation efficiency of the engine.

The Dadao Gantengzhe also adopts a mechanical water pump + electronic thermostat strategy. The water pump cooling system can still be kept stable when crossing long distances in extremely hot environments, and the electronic thermostat can achieve fine control of the temperature to ensure that the engine temperature is always in a stable and controllable range.

Shanhai Pao Performance Edition

In the domestic pickup circle, the Shanhai Pao Performance Edition is definitely a "ceiling" existence. The Shanhai Pao Performance Edition takes into account luxury and fun, equipped with a 3.0T+9AT power combination, with a maximum net power of 260kW and a peak torque of 500N·m. In order to avoid overheating of the vehicle, the whole vehicle can also be equipped with an optional silicone oil fan, which has a more stable heat dissipation capacity and is more reassuring in the face of extremely harsh off-road conditions. With the Great Wall self-developed 9AT gearbox, the maximum transmission efficiency is as high as 96%, and fuel economy has also been improved.

Written in the end:

Pickup trucks are born with off-road fun attributes, and have certain advantages in the face of off-road conditions, but there are currently few pickup trucks on the domestic market that focus on thermal management systems. The launch of the above three models has set a corresponding benchmark in the domestic pickup truck market. It will attract more consumers in the future and promote the fermentation of the hook effect. Many pickup truck companies may bring off-road pickup trucks with thermal management systems with richer categories, more diverse shapes and more refined configurations.