Cerri, T, Onorati, A, & Mattarelli, E. '1D Engine Simulation of a Small HSDI Diesel Engine Applying a Predictive Combustion Model.' Proceedings of the ASME 2006 Internal Combustion Engine Division Spring Technical Conference. The simplified 1D model is recommended in regard to convenience in modeling and efficiency in calculation. Keywords: Internal combustion engine, exhaust system, sound level, computational fluid dynamics, engine modeling. Simulation of flow in exhaust manifold can be done to provide solutions of engineering problems. This solution speed, the openness of 1D CAE software to different types of software codes and the real-time capabilities allow you to streamline the system development process. 1D CAE offers you an open development approach, starting from functional requirements to physical modeling and simulation, enabling concurrent engineering of mechatronic. Mostly based on 1D adiabatic m ean value engine models for the in. A mathematical model of the engine with a more appropriate intake was made in the engine simulation code in order to. Typical 1-D engine simulation tools available nowadays offer a rather advanced description of the physical phenomena within engines’ cylinders. However such models are limited when modeling the gas chemical composition, and/or the chemical processes within the engine.
With the help of engine simulation software it is possible to analyse and compare new or revised concepts virtually before first components are manufactured. Due to long-term experience in many automotive applications, HERON can answer questions and provide solutions for gasoline, diesel, gas, and DF engines quickly, reliably, and competently. This technology is applied during the initial concept phases but is a very helpful tool to assist the hardware development phase in its entirety. The understanding of the complex processes, from gas dynamics in the manifolds up to detailed combustion analyses, assists in the decision making process by proving them in advance. All this helps save development time and thereby reduces test bed costs dramatically. The key application areas are:·Definition of the entire manifold arrangement and packaging ·Optimisation of all intake and exhaust pipe lengths and diameters ·Combustion analysis, with emission and knocking prediction ·Gas exchange analysis and optimisation ·Checking and optimisation of valve timing and valve lift data ·Power, torque, and BSFC prediction ·Turbo- and supercharging matching ·EGR system layout ·Cooling requirements ·Efficiency optimisation for combined heat-power applications ·Pre-optimisation of controller and sensor units For·Steady-state applications, and ·Transient applications at WOT or part-load operating conditions ·Boundary condition calculations for 3D-CFD simulations Applied 1D software tools:·AVL BOOST™ ·GT-Power™ ·HERON-HCS (in-house development) |
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1d Engine Simulation Software
The paper analyses, by means of a parallel experimental and computational investigation, the performances of a small HSDI turbocharged Diesel engine. As far as the numerical approach is concerned, an in-house ID research code for the simulation of the whole engine system has been enhanced by the introduction of a multi-zone quasi-dimensional combustion model, tailored for multi-jet direct injection Diesel engines. This model takes into account the most relevant issues of the combustion process: the spray development, the in-cylinder air-fuel mixing process, the ignition and formation of the main pollutant species, such as nitrogen oxides and particulate. The prediction of the spray basic patterns requires the previous knowledge of the fuel injection rate. Since the direct measure of this quantity at each operating condition is not a very practical proceeding, an empirical model has been developed in order to provide reasonably accurate injection laws from a few experimental characteristic curves. The results of the simulation at full load are compared to experiments, showing a good agreement on brake performance and emissions. Furthermore, the combustion model tuned at full load has been applied without any change to the analysis of some operating conditions at partial load. Still, the numerical simulation provided results which qualitatively agree with experiments.