The methanol-water injection can lead to significant additional engine power during vehicle tuning. Depending on the car model, these 20 amount to 40 percent. At the same time, the vehicle consumes less, and the exhaust emissions also fall. The engine basically takes no damage.
Methanol-water injection: functioning
With the built-in methanol-water injection, the engine sucks in a methanol-water mixture via the piston pressure pump at a defined boost pressure. There is the process only with water. The liquid then atomises a nozzle, the mist passes through a valve in the intake tract into the combustion chamber. The methanol-water-liquid mixture is removed from a reservoir in the engine compartment. In some cases, the liquid may be stored in the windscreen wiper system. In simple methanol-water injection systems, the injection quantity is fixed, but there are also more complex systems in which the amount of liquid increases in proportion to the boost pressure. This will optimize the effect. This is that the methanol-water injection as well as a charge air cooler cools the fuel mixture in the combustion chamber. As a result, the density of the mixture increases, the oxygen content increases. The result is a stronger combustion, which increases the performance of the engine.
Further advantages of methanol-water injection
The fuel mixture receives by this injection better knock resistance, the boost pressure increases, the ignition takes place earlier. For improved knock resistance, a methanol-water mixture must be injected which acts as an additional fuel. Some injection systems for methanol-water mixtures are so effective that a turbo engine no longer requires a charge air cooler.
The advantages of methanol-water injection at a glance:
- The methanol-water injection protects the tuned motor from damage, because it significantly reduces the thermal load.
- The measure complements well other tuning measures such as chip or Lachgastuning.
- This injection causes no pressure loss unlike a charge air cooler.
- The system causes a previous ignition.
- Fuel consumption and pollutant emissions fall.
- The methanol-water injection prevents the formation of carbon, so that no deposits form in the combustion chamber.
Incidentally, the methanol-water injection system has been known for a long time. The German Air Force used the mixture MW-50 (50: 50 ratio of methanol and water) in the Second World War to increase the performance of turbocharged aircraft engines. The MW-50 units were installed in fighter aircraft (Bf 109, Fw 190). In critical situations, the pilots were thus able to operate the engines for a short time with a so-called special emergency power.
Of course that had not happened yet!
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