Airbox

from Wikipedia, the free encyclopedia

The airbox (German: Luftkiste) is a box for calming the intake air of an internal combustion engine , which is usually used together with individual throttle or flat slide systems.

It also serves as an intake silencer. The airbox also makes it possible to install only one air filter instead of several .

formula 1

In Formula 1 cars, their opening is on the front of the engine cover, above the driver's head. This is where cold air is most likely to be sucked in and there is a ram-air effect, which in the naturally aspirated era made it possible to increase the engine's output. In the era of turbo engines in the 1980s, the use of airboxes was largely dispensed with. Turbo engines are not dependent on generating an engine charge by sucking in air ; instead they are charged with the help of their own exhaust gases. An airbox is still used for the turbo engines used since 2014 . In this way, a smaller amount of exhaust gases is required to charge the engine, which in turn means that more exhaust gases are available for the ERS-H and thus an additional increase in performance is made possible. The air flow is also used to cool the engine components.

Illustrations

  • Airbox installed in a VW 2-l-16-V in connection with individual throttle valves . The air filter was mounted directly on the airbox.

  • Schematic cross-section through the airbox shown on the left. The inside of the airbox was provided with funnels that are freely located in the air flow of the airbox, and through which the performance can be optimized in a certain speed range. Depending on the volume and the amount of air in the airbox, there may be a brief charging effect when the throttle valves are opened.

  • McLaren M23 with a clearly visible airbox.

  • Conspicuous airbox of a Porsche 908/3 .

  • The 3.4-liter V8 engine of the Porsche RS Spyder . The airbox (top left, with “PORSCHE” logo), the GR6 transmission , the wishbones and the two drive shafts are clearly visible .

Individual evidence

  1. ↑ Despite turbo: Why does Formula 1 still have airboxes? , motorsport-total.com of March 23, 2019; Accessed August 26, 2019