Assignment 7

1. Explore tutorial number 9 (FRM):-

• Fast Running Model (FRM), execute much more rapidly than the typical detailed GT-Power engine model, and are ideal for integrating with other vehicle system where an accurate and predictive engine plant model is desired and where computational speed is critical, FRM adpat to changing condition eg value timing, spark injection timing , turbo lag, external temperature attitude, cooling system condition,etc, without the need to apply non-physical correction factors. Whether studying changes to ambient condition or speed that are expected when performing drive cycle analysis and other transient focused simulation.
• Some example of application that are ideal for FRM are as follows:-

1. ECU Modelling (including HiL):- Where a fast running and transient capable engine model is essential for optimizing ECU strategy.
2. Engine + Drive train/Vehicle:-Where accurate torque pulsations are key for optimizing drivetrain design and strategy.
3. Vehicle Thermal Management Modelling:- Where the engine provide the heat to the cooling system and the cooling system behaviour feed back into the engine performance prediction great for simulating off ambient condition.

In addition to convering the complete conversion process of going from a detailed engine model into an FRM, this class will also cover special consideration that may come up depending on the intended use of the FRM.

1. Brief introduction to FRM and their application.
2. Converting a detailed GT Power model into a FRM

i. Reviewing the baseline detailed model.

ii. Simplifying each subsystem of the detailed model.

iii. Additional modification for achieveing even faster run times.

3. Discussion of application specific consideration when making an FRM.

i. Real time and Hardware in the loop modelling

ii. Engine cooling and heat rejection.

iii. Aftertreatment modelling

4. Discussion of transient simulation using GT- SUiTE

2. BUILDING FRM MODEL:-

ENGINE SPECIFICATION:-

• Bore 102 mm stroke 115 mm CR 17
• No of cylinder 6
• CI engine
• Twin Scroll Turbine
• GT Controlle

This is the diseal engine configuration where the major connection are made into a single assembly to make it into a FRM.

FRM DISEAL:-

TURBO FRM:-

CASE SETUP:-

The compressor maps are generated and the operating point are calibrated and also the controlled are converging as the target value are reaching.

FRM DETAILLED PARAMETER:-

1. ENGINE GEOMETRY:-

2. ENIGNE OPERATING CONDITION:-

3. ENGINE PERFORMANCE:-

CONCLUSION:-

Thus, the FRM model are in high fidely with the real model and hence it should be very concise about its time, as it has to send and receive the signals during the engine simulation and this FRM plays a major role in developing the HiL system to calibrate the engine model and also to develop the control strategies for engine.