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Top 10 analyses to run with Simcenter Amesim engine models and how to choose the most suitable one

Thanks to its long history and expertise in the engine modeling area, Simcenter Amesim allows to model an internal combustion engine in many different ways, depending on the goals …

We are used to talk about the scalability of Simcenter Amesim, but it goes way beyond this single word and we could say that the only purpose of this capability is to satisfy user’s needs.

Indeed, there are so many needs when it comes to engine modeling, and so many ways to model an engine in Simcenter Amesim, that without guidance, the user could choose an inappropriate submodel with the associated unwanted effects.

Here is a non-exhaustive list of the numerous ways a 4-cylinders engine model can be modeled, which user’s needs it satisfies and some hints about which one to choose based on several relative criterion.

Top 10 analyses to run with Simcenter Amesim engine models and how to choose the most suitable one

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#1 - Assessing the thermal behavior of an engine cooling and/or lubrication circuit

The engine is a heat source and can be modeled using the following libraries and components:

  • The Signal, Thermal and thermal hydraulic libraries components
picture_1.1.pngSimple Simcenter Amesim engine model for heat release

 

  • Or the Cooling system library component
picture_1.pngSimple Simcenter Amesim engine model for heat release and cooling system design

 

picture_2.pngrelease Simcenter Amesim map

 

  • Or the IFP-Drive library components
picture_3.pngIFP-Drive engine model for heat release

 

picture_4.pngIFP-Drive engine model configuration for heat release computation

 

  • Or the IFP-Engine library components (mean value engine model or high frequency engine model)
picture_5.pngDetailed engine model for heat release in Simcenter Amesim

Capabilities summary

tab1.png

 

#2 - Assessing the fluid flow behavior of an engine cooling and/or lubrication circuit

The engine is a fluid volume with restrictions and can be modeled using the following libraries and components:

  • The Signal, Thermal & Thermal Hydraulic libraries components
picture_6.pngEngine fluid flow Simcenter Amesim model

 

  • Or the Cooling System library components
picture_7.pngEngine fluid flow simple Simcenter Amesim model

 

  • Or the CAD import tool combined with Thermal and Thermal Hydraulic libraries components

Capabilities summary

tab2.png

 

#3 - Driving a pump, an alternator, a shaft or a power take-off

The engine is a torque/rotational speed source and can be modeled using the following libraries and components:

  • The Signal and Mechanical libraries components
picture_9.pngSimcenter Amesim torque or speed generation model

 

  • Or the IFP-Drive library components

pic10-11.png

  • Or the Powertrain library components
picture_12.pngSimcenter Amesim simple engine torque model

 

  • Or the IFP-Engine library components using a mean value engine model (MVEM)
picture_13.pngLMS Amesim mean value engine model

 

Capabilities summary

tab3.png

#4 - Assessing the fuel consumption of the vehicle over a driving cycle

The engine consumes fuel to drive the vehicle and can be modeled using the following libraries and components

  • The IFP-Drive library components

pic14-15.png

  • Or the IFP-Engine library components using a Mean Value Engine Model (MVEM)

picture_13.pngSimcenter Amesim Mean Value Engine model

 

  • Or the IFP-Engine library components using a high frequency engine model

picture_17.pngDetailed engine model for fuel consumption simulation in Simcenter Amesim

 

Capabilities summary

tab4.png

 

 

 

#5 - Validating the Engine Control System

The engine, its actuators and sensors are compatible with real-time control units and can be modeled using:

  • IFP-Engine library components with MVEM
picture_18.pngMVEM engine model for control system design and V&V

 

  • Or with high frequency engine model
picture_19.pngEngine model for control system design and V&V

Capabilities summary

tab5.png

 

#6 - Assessing the crankshaft torsional vibrations induced by the combustion

The engine is a harmonics generator and can be modeled using the following libraries and components:

  • The Powertrain library components
picture_20.pngSimcenter Amesim engine model for NVH analysis

 

  • Or the IFP-Engine library components
picture_21.pngSimcenter Amesim detailed engine model for NVH analysis

 

Capabilities summary

tab6.png

#7 - Assessing the ride comfort and vehicle drivability

The engine is a 3D dynamic mass with 6 degrees of freedom and can be modeled using:

  • The Powertrain library components
picture_22.pngSimcenter Amesim engine model for ride comfort and drivability analysis

 

#8 - Assessing the engine bearings lubrication

The engine is a reciprocating force source and can be modeled using the following libraries and components:

  • The Planar Mechanical library components
picture_24.pngEngine model for bearings lubrication design

 

  • Or the Powertrain library components
picture_25.pngSimcenter Amesim engine model for bearings design

 

Capabilities summary

tab8.png

#9 - Assessing the exhaust after-treatment system efficiency

The engine is an exhaust gases generator and can be modeled using the following libraries and components:

  • The Signal library components
picture_26.pngSimple engine exhaust gases Simcenter Amesim model

 

  • Or the IFP-Drive library components
picture_27.pngSimcenter Amesim engine model for exhaust gases analysis

 

  • Or the IFP-Engine library components using MVEM
picture_28.pngSimcenter Amesim MVEM engine model for exhaust gases generation

 

  • Or the high frequency engine model
picture_29.pngSimcenter Amesim IFP-Engine model for pollutants analysis

Capabilities summary

tab9.png

#10 - Assessing the engine air intake, exhaust and fuel systems performances

The engine converts air and fuel into exhaust gases, torque and heat and can be modeled using the following libraries and components:

  • The IFP-Engine library components with MVEM
picture_30.pngSimcenter Amesim MVEM engine model for air and fuel loops design
  • Or the CFD 1D and IFP-Engine libraries components

picture_31.pngSimcenter Amesim detailed engine model for air and fuel loops design

Capabilities summary

tab10.png

Bonus (coming in rev 16) – Assessing the vehicle underhood thermal behavior

The engine is a radiative and convective heat source and will be modeled using the HEAT library components:

picture_32.pngSimcenter Amesim engine model for underhood thermal analysis
picture_33.pngSimcenter Amesim HEAT underhood cooling stack analysis
This article is repubblished from the Simcenter Blog, https://community.sw.siemens.com/s/article/top-10-analyses-to-run-with-simcenter-amesim-engine-models-and-how-to-choose-the-most-suitable-one, by tim.mila 

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