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Within-A-Cycle Control of Rate Shaping with Piezoelectric Fuel Injectors

Summary

Researchers at Purdue University have developed a model-based, closed-loop controller of injection flow rate for a piezoelectric fuel injectors. This within-a-cycle control strategy utilizes a model-based, generalizable scheme and shows an injection flow rate tracking capability. The performance of this controller has been verified with simulation and experimental results at different rail pressures and desired injection rates, which indicate a maximum error of total fuel per one injection event of 2.5 percent.

Technology Benefits

Reduction in fuel consumption and emissions Dynamic surface control scheme minimizes computational effort

Technology Application

Automobile industry

Detailed Technology Description

Greg ShaverPurdue Mechanical Engineering

Countries

United States

Application No.

None

Country/Region

USA

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