Read e-book online An innovative 3D-CFD-Approach towards Virtual Development of PDF

By Marco Chiodi

ISBN-10: 3834815403

ISBN-13: 9783834815408

Within the engine improvement approach, simulation and predictive courses have constantly received in reliance. a result of complexity of destiny inner combustion engines the functions of simulations courses in the direction of a competent "virtual engine improvement" is a necessity that represents one of many maximum demanding situations. Marco Chiodi provides an leading edge 3D-CFD-tool, completely committed and optimized for the simulation of inner combustion engines. due to enhanced or newly built 3D-CFD-models for the outline of engine methods, this instrument guarantees a good and trustworthy calculation additionally by utilizing direction 3D-CFD-meshes. in accordance with this strategy the CPU-time should be decreased as much as an element a hundred compared to conventional 3D-CFD simulations. furthermore an built-in and automated "evaluation software" establishes a accomplished research of the suitable engine parameters. as a result power of a competent "virtual improvement" of full-engines, this quick reaction 3D-CFD-tool makes a massive contribution to the engine improvement technique.

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Thanks to this coarse discretization, a MBS simulation allows in a first step to calculate the kinematic and dynamic of the object of interest with moderate computing times. In a second step, starting from an estimation of the structural properties of the components involved (quite difficult for complex geometries) it is possible to calculate the strains and deformations in each part of the spring-mass system. 1 Simulation towards Virtual Engine Development 13 range of engine speed and load, so that a preliminary design of the crank shaft can be performed within a short development time.

In the seventies, after two world oil crisis that caused a dramatic increase of the oil price, the reduction of the fuel consumption gained drastically in importance. , up to rudimental start-stop strategies at the beginning of the eighties. In particular it was the appearance of electronics that permitted to develop the first ECUs so that, first of all, the dosage of the fuel mixture became very accurate before more and more complex engine map applications allowed a more efficient engine operation.

3 Hybridization Basically, a hybrid electric vehicle combines an internal combustion engine and an electric motor powered by batteries, merging the best features of both propulsion devices. This expensive combination allows the electric motor to help the conventional engine operating more efficiently 6 1 Introduction by providing additional power to the car transmission. In addition a hybrid car allows recovering a part of the kinetic energy of the vehicle during braking instead of dissipating it.

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An innovative 3D-CFD-Approach towards Virtual Development of Internal Combustion Engines by Marco Chiodi

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