How Does a Snorkel Work?
2 Answers
Snorkel, also known as a high-position intake pipe or wading device, works by cutting off the original intake pipe located at the vehicle's grille and installing a sealed, waterproof engineering plastic intake pipe in its place. This new pipe connects and seals with the engine's original intake system. The high-position intake's air inlet extends to the highest point on one side of the front windshield, significantly raising the water entry threshold for the engine. Therefore, when a vehicle is submerged but water doesn't reach the high-position intake's air inlet, the engine won't stall. Below are the functions of a snorkel: 1. Function one: Increases the vehicle's wading depth. 2. Function two: Enhances engine performance by allowing more efficient air intake.
I've been off-roading for several years, and the principle of a snorkel is actually quite simple—it relocates the engine's air intake from a lower position to a higher one, such as the roof or hood. This way, when driving through rivers or deep water pits, water won't be directly sucked into the engine, avoiding issues like hydro-lock. In regular vehicles, the air intake is usually positioned low under the engine, making it prone to water ingestion even at slightly higher water levels, which can stall or even destroy the engine. I once had an experience off-roading by a river where the water nearly reached the doors, but my snorkel-equipped vehicle crossed safely. When choosing a snorkel, pay attention to corrosion-resistant materials and ensure proper installation to prevent tube aging and leaks. Regularly check if the filter is clogged with mud. Overall, it enhances off-road capability, especially for those driving in rainforests or flood-prone areas.
