Fuel Injector Spray Pattern Effects Fuel Economy| Fuel Injection

One of the most common causes for bad fuel economy

, poor acceleration and poor cruise driveability, may not be so much the way you drive the injector, but rather the type of injector you are running.

In this car, in this scenario, we've got 2 Bosch injectors, they look identical, but the spray patterns on the end of the injector can be the problem. You can have a 15 degree conical spray, or a 30 to 60 degree conical spray. What that means, is the atomisation of the fuel going into the cylinder.

At a light cruise, something like on a Skyline, at about 2,200 RPM and 100 kph, you need maximum atomisation. The airflow over the injectors, the airflow into the cylinders is not at a high speed, so atomisation of the fuel is one of the best things.

If you have a poor quality injector, it won't effect your power at the top end, you'll still make maximum power, but your driveability won't be there. So, one thing is to look at the type of injector you're fitting to your car, which is what we do here at Wolf Motorsport, we advise you on what type of injector to put into your car, and the right one of the job.

If you've got a drag car, and only top end stuff, then those injectors with the 15 degree spray pattern may be fine. But, if you want nice economy, nice driveability, nice acceleration off the line, you've got to go for a 30 or 60 degree spray pattern.

Fuel Injector Spray Pattern Effects Fuel Economy| Fuel Injection

By: Steven Taylor

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