Design And Development Of A Controller For Fuel
Economy Improvement Based On Engine Rpm And
Temperature
Student Team/ Author :
S. Mathapati Rajshekhar
Guide By :
Z. Tracy Austina
Degree :
In current global situation on availability of Diesel is an issue, so saving of this fuel should be controlled by increasing the
FE of an Automotive engines. There were various types of controllers for fuel injection control available in the CRDe
system, but for the mechanical engines such controllers are not present.
To address the above concern, developing the controller which will work on RPM of engine and temperature of engine
oil. The controller will help in improvement of FE by 4-5%, By doing literature survey and studying the BSFC curve the
control logic were defined. After that the simulation model prepared in MATLAB Simulink for cross verification of the
control logic. Then the controller prototype made to perform the required function and validated the proto on bench as
well as on vehicle for logic. For driver indication the FE mode LED indicator (Power / ECO) provided.
Simulation results are shown that the logic based on RPM and Temp gives the correct PWM output. The controller is
based on Engine RPM and Temperature which advances the fuel injection time of the given engin
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