Flowmeters custom-designed to test fuel injectors

Aylesbury-based Litre Meter has supplied seven customer-built flowmeters to the Delphi automotive division in Spain, to test their range of petrol and diesel fuel injectors

Litre Meter created three bespoke versions of its Pelton wheel flowmeter to accurately measure flow rates of gasoline when testing three different sizes of fuel injector.

The company also fitted special connections to the instruments so they would integrate with Delphi test equipment.

Precise and accurate control of fuel injector parameters, such as timing, delivery, instantaneous flow rate, pressure and spray configuration, are essential to achieving a clean burn and high thermodynamic efficiency - factors that are critical for meeting engine emissions, performance and fuel economy standards.

The flowmeters have been designed to measure flow rates between 0.01 - 0.25 litres per minute, 0.03 - 3.9 litres per minute and 0.06 - 6.3 litres per minute to an accuracy of +/-2 per cent of measured value.

They are rated at up to 40 bar pressure.

The Pelton wheel flowmeters also have a custom-built stainless steel cover fitted which is resistant to gasoline.

Ferrules and connectors are also supplied to enable the instruments to be connected to 8 mm plastic pipes.

"This application is a perfect example of our ability to custom-build flowmeters for specific applications," said Charles Wemyss, engineering director at Litre Meter: "By taking one of our standard flowmeter products we were able to re-engineer it for Delphi to meet specific end user requirements".

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