PDF《Bosch》

s requirements and takes them into account in the LMS Imagine.Lab roadmap. Sebastian Kanne Simulation Group Manager Bosch Diesel Systems Bosch and Siemens PLM Software teams worked together on several topics, says Klein. We collaborated on the discrete par- titioning technique, enabling users to reduce central processing unit (CPU) time while retaining result accuracy when ana- lyzing complex hydraulic systems. Bosch was also involved in the development of the LMS Amesim functionality that allows users to develop their own components, gas transport feature and electromechani- cal library. Since 2012, we regularly participate in early visibility tests of each new release of LMS Imagine.Lab. This allows us to test new functionalities on our computers with our models and configurations that cannot be shared externally, before a release goes to market. Today, Bosch uses LMS Amesim in the design process of all diesel and gasoline injection systems, as well as braking sys- tems of both passenger and commercial vehicles. More than

300 Bosch engineers use LMS Amesim in different locations globally to create specific components, build up and validate simulation models, and perform multiple simulation studies. In 2009, Bosch Diesel Systems implemented LMS Imagine.LabTM Sysdm in its European R&

D centers to share, manage and re-use multiple models built not only with LMS Amesim but also with other simulation tools. LMS Sysdm enabled the company to efficiently split the simulation work between multiple R&

D centers while main- taining full traceability. LMS Sysdm was critical to enabling workflow control by defining role-based access rights for each user. Moreover, LMS Sysdm helped Bosch to improve the quality of its simulation studies by enabling knowledge capitaliza- tion and proper organization of validated component and subsystem representations. Bosch gasoline direct injection helps reduce fuel consumption by up to

15 percent while enhancing driving enjoyment. Bosch gasoline direct injection system: a high-pressure pump, high-pressure injectors, a fuel rail and a control unit. Designing outstanding diesel injection systems Diesel engines are widely used for com- mercial and passenger cars. The fuel injec- tion system is the heart of diesel engines;

it is critical for torque generation. The way the injection system delivers diesel fuel into the combustion chamber enables a clear advantage in terms of engine perfor- mance, noise characteristics and emissions. Modern diesel injection systems are highly sophisticated technology. They generate extremely high pressure, which is compa- rable to the force of a rhinoceros balancing on a fingertip. Additionally, the precision of modern Bosch diesel systems is unbeaten: during the blink of an eye, the system injects a small amount of fuel approximately

25 times. When developing diesel injection systems consisting of interacting hydraulic, mechanical, signal and electrical subsys- tems, it is essential to use the MBSE approach in the early design phases in order to effectively reduce costs and time-to-market. The Modelica development environment of LMS Amesim enables engineers to use Modelica-based and LMS Amesim models while benefitting from the full range of powerful platform features available within LMS Amesim. Bosch uses the mechanical, thermal, hydraulic and electromechanical libraries of LMS Amesim to model multi-domain components of the injector, rail and pump. LMS Amesim helps specialists to study the dynamic subsystem and system behavior depending on the injection rate, pressure and injected fuel quantity. Using LMS Amesim, they also validate the control strategies of components, such as a pres- sure regulator. Not only can engineers take full advantage of the user-friendly interface, detailed doc- umentation and validated components of LMS Amesim, advanced users can build up their own submodels and customize fluid properties. Moreover, to analyze the inter- actions between multi-domain compo- nents and optimize the design, open simulation tools are critical to avoiding what otherwise is likely to become a time- consuming and error-prone process. Another very important advantage of LMS Amesim is its strong focus on numeri- cal performance and robust- ness. At the end of our working day, we launch about 1,000 simulations, with LMS Amesim perform- ing the analysis at night. I have never seen such a pow- erful tool. Andreas Klein Senior Expert for Hydraulic System Simulation Corporate Sector Research and Advance Engineering Bosch By coupling LMS Amesim with the multi-body simula- tion tool via FMI, we gained in efficiency of our process, improved the quality of sim- ulation results, reduced the effort necessary for design analysis and accelerated the simulation process. Eric Quetel Diesel Systems Development Engineer Engineering Center of Competence Simulation Bosch Today, we interface LMS Amesim with 3D multi-body software as well as other tools for controls, design optimization, elec- tronic circuit simulation, finite element analysis and embedded control system design, says Klein. The goal is to build a unique process from CAD design to system integration, whereas there was a time that I could not even imagine we would be able to couple LMS Amesim with a CFD tool. Another very important advantage of LMS Amesim is its strong focus on numerical performance and robustness. At the end of our working day, we launch about 1,000 simulations, with LMS Amesim performing the analysis at night. I have never seen such a powerful tool. Coupling system and multi-body simulation approaches Among the examples of Siemens PLM Software helping Bosch improve its simula- tion process is the coupling of L........