Gasoline direct injection (GDI) flow meter

Measuring fuel consumption for optimal engine performance
high pressure fuel measurement

The technology that wrings fuel efficiency out of diesel fuel measurement is coming to gasoline engines, too. It's called Gasoline Direct Injection (GDI), and it refers to how the fuel is delivered to the engine's cylinders.

Up until now, gasoline has been injected into the cylinders by mixing it with air in the intake manifold. This indirect approach results in various inefficiencies in burning the fuel, and it can result in a lot of usable energy getting wasted. In a direct injection engine, however, the fuel is pumped straight into the combustion chamber. This allows the fuel to burn more evenly and thoroughly. With an assist from modern engine management computers, the fuel gets burned right where it's needed, when it's needed. For the driver, that translates into more mileage per gallon and greater power to the wheels.

Moving the injection point directly to the cylinder required that the fuel injector be able to overcome the pressure of the highly compressed air within the cylinder. Automotive component suppliers have come up with the solution: Rugged, high-pressure fuel injectors and the sophisticated electronics to make them perform optimally in GDI engines.

A whole new generation of high pressure fuel injectors precisely ration the fuel and manipulate the air-fuel ratios to optimize performance, emissions and fuel efficiency; with claims of cutting fuel consumption by 15 percent and providing more low—end torque than a comparable indirect injection system.

With consumer concern about the environment and gasoline prices approaching critical mass, automakers are ramping up production of their GDI offerings and preparing to launch new ones.

Max equipment specified:

Max Machinery’s high resolution, Model P213 meter has a long history of providing precise, gasoline fuel measurement. The 500 bar (7250 psi) variant of this meter is quickly becoming the standard for the development and testing of GDI injection systems. Low flow rates require the 1000 pulse/ml resolution that the Model P213 and P002 can provide. To reach the highest levels of injector performance, choose a flow meter that can reliably verify the flow rates. If you would like a quote for a similar project, please let us know.

“A tremendous piece of equipment for the price. A very, very good value.”

–Paul Y. manufacturer of precision injector sets.

Who's using Max flow meters?


Products Specified for this Application

High resolution, low flow meter Model P001
0.005 to 200 cc/min (0 to 0.053 gpm)...Combined with our highest, 500 bar (7250 psi) pressure rating
Precision low flow meter Model P002
0.5 to 2000 cc/min (0 to 0.53 gpm)...All the range of the Model P213 with a 500 bar (7250 psi) pressure rating
Diesel fuel testing equipment
Fuel recirculation tanks for measurement system development