Why Are Off-Road Vehicles Not Afraid of Water?
2 Answers
Off-road vehicles have higher air intake and exhaust ports, giving them a certain wading capability. When leaving the factory, off-road vehicles come with a specified wading depth, typically around 500 millimeters. Related details are as follows: Due to their body-on-frame construction, hardcore off-road vehicles generally have a greater wading depth compared to urban SUVs and sedans. However, it is crucial to avoid water levels exceeding the bumper. If water enters the engine's air intake, it can cause severe internal impacts, leading to immediate engine failure. Additionally, when driving through water, do not reduce throttle or stall the engine. If water enters the exhaust pipe, it can be sucked back into the engine due to the engine's suction force, posing a risk of engine damage. Modifications can be made to enhance wading capability. Most modifications start with waterproof sealing of electrical components and connectors, followed by relocating the intake piping and air filter outside the engine bay to raise their position. It should be noted that after installing a raised air intake, the vehicle's power may be somewhat affected, and fuel consumption will increase significantly.
I've been driving an off-road vehicle for several years, and what impresses me most is its ability to easily handle waterlogged road conditions. The chassis is designed high, with a ground clearance usually over 200mm, making it difficult for water to submerge critical components. The engine's air intake is positioned high and features a sealed design, preventing water from entering and keeping the engine running. The electrical system is also reliable, with waterproofed wiring and connectors to avoid short circuits. I remember one heavy rainstorm when urban flooding reached thigh height, and regular cars didn't dare to proceed. I drove my off-road vehicle steadily through, only splashing a bit of water. Of course, this doesn't mean you can recklessly charge into deep water—wading depth is typically between 500mm and 800mm, beyond which problems may arise. The tire tread grooves also help significantly, providing strong grip to prevent slipping. However, post-drive inspection is crucial, as water and debris can cause rust, so I frequently clean the chassis and brakes. Overall, off-road vehicles are very considerate in this aspect, making daily driving much more reassuring.
