Mixing meter (AFR GAUGE)

Mixing meter (AFR GAUGE)

Mixing meter for fixed mounting in the car or for temporary mounting, eg for running in or testing cars. We have several different mixer / wideband lambda probes, from eg AEM, PLX, Innovate, and Vems. When installing a mixer, the lambda probe must often be calibrated, this you must remember to do when the probe is not mounted in the exhaust, or it must have stood for 3-4 days without starting.

If you have a request for another watch, feel free to contact us.

Measurement of the mixture

Adjusting an engine's petrol/air mixture is something that can be done easily with one of the products below. It is a must for a correct adjustment that you have an opportunity to be able to read the combustion. The mixing ratio of a petrol engine must be 14.7 kg of air to 1 kg of petrol (14.7: 1). However, this is not the most effective mixture. If you go for power from the engine, approx. 10% more gasoline. If the best economy is sought, approx. 10% less petrol, a lean mixture, however, gives more heat development and less power.

The optimal setting to look for when looking at the entire rev range is a slightly fatter mixture at idle, slightly leaner at half throttle, and a slightly fatter at full throttle.

Another way to express the mixing ratio is via, the air excess number. The excess air number is an expression of the mixing ratio and a number of 1.0 (lambda = 1.0) corresponds to a ratio of 14.7: 1. For a petrol engine, the number must be between 0.6 - 1.2, these are the absolute outer limits.