DEVELOPMENT OF TURBOCHARGER CONTROL SYSTEM FOR WANKEL ENGINE
Keywords:Wankel Engine, Turbocharger, Waste Gate, Boost Pressure, PI Controller,Pulse Width Modulation.
The paper deals with the aspect of Development of Turbocharger Control Unit for Unmanned Aerial Vehicle
which is running with Wankel Engine. The main aim of the work is to compensate the intake Pressure drop at high altitude as
this engine is operated there. This is done by controlling the boost pressure of turbo charger, Waste gate is used to control
the amount of exhaust gases directed to the turbine wheel of the turbocharger. A closed loop turbocharger control system to
control waste gate in response to the pressure at inlet manifold is developed and tested in engine. The best suited Inlet
Manifold pressure is found using real time engine testing and from that the set point is found for every engine speed. Using
that as a set point intake pressure, pressure is controlled using MC9S12B128 microcontroller. This Controlling of waste gate
will allow the engine not to lose its efficiency even at high altitude.