Lotus Engine Simulation Software S Code Developed By

The solver module is a built in combustion and heat transfer zero-dimensional equations and fuelgas composition solver according to user input data in data module.

Show citation Comparison of Engine Simulation Software for Development of Control System KinYip Chan, 1 Andrzej Ordys, 1 Konstantin Volkov, 1 and Olga Duran 1 1 School of Mechanical and Automotive Engineering, Faculty of Science, Engineering and Computing, Kingston University, Friars Avenue, Roehampton, London SW15 3DW, UK Show more Academic Editor: Luis Carlos Rabelo Received 14 Mar 2013 Accepted 29 May 2013 Published 20 Aug 2013 Abstract Most commonly used commercial engine simulation packages generate detailed estimation of the combustion and gas flow parameters.

These parameters are required for advanced research on fluid flow and heat transfer and development of geometries of engine components.

However, engine control involves different operating parameters.

Various sensors are installed into the engine, the combustion performance is recorded, and data is sent to engine control unit (ECU).

ECU computes the new set of parameters to make fine adjustments to actuators providing better engine performance.

Such techniques include variable valve timing, variable ignition timing, variable air to fuel ratio, and variable compression ratio.

In the present study, two of the commercial packages, Ricardo Wave and Lotus Engine Simulation, have been tested on the capabilities for engine control purposes.

These packages are compared with an in-house developed package and with reference results available from the literature.

Different numerical experiments have been carried out from which it can be concluded that all packages predict similar profiles of pressure and temperature in the engine cylinder.

Moreover, those are in reasonable agreement with the reference results while in-house developed package is possible to run simulations with changing speed for engine control purpose.

Introduction Lately, control engineers in the automotive industry have been challenged with the task of improving fuel consumption and engine performance while simultaneously reducing pollutant emissions.

Engines fitted with electronic control provide flexibility to adjust the engine parameters to achieve certain performance.

However, it has to be noted that those requirements can lead to contradictory constrains to be satisfied by the control algorithms.

The main component of the electronic control system is the engine control unit (ECU), an electronic device which is connected to the engine sensors and actuators to calculate the best parameters needed to perform efficient combustion, and hence provide cleaner exhaust gas and better engine performance 1.

Sensors connected to ECU in Figure 1 may be used in open loop strategies, such as air-flow sensor, air temperature sensor, and throttle position sensor.

In open loop configuration, the ECU adjusts the engine parameters according to the sensors outputs with the help of look-up tables.

Other types of sensors, such as lambda sensor, engine temperature sensor, or knock sensor are used on closed loop control configuration.

The engine parameters, such as the ignition timing, are then continuously updated according to the feedback of the particular sensor.

In order to develop suitable controls strategies, simulation has been a valuable tool to predict and optimise key parameters in the engine control system.

It allows flexible and low cost development of control algorithms without the need of engine bed.

Once the algorithm has been developed and tested, it may be installed into the ECU.

Various commercial packages have been developed and are available to solve engineering problems related to design and optimisation of internal combustion engines (ICEs).

There are four primary engine simulation commercial packages used in the automotive industry today: Ricardo Wave (RW), Lotus Engine Simulation (LESoft), AVL fire, and GT-Power.

They require detailed input parameters to simulate the engine operation in an integrated manner rather than using different subsystems.

Lotus Engine Simulation Software S Code Developed By

LESoft is an in-house code developed by Lotus Engineering.

The package processes engine simulation in two modules, the data module and the solver module 2.

Lotus Engine Simulation Software Cracks