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检索条件"任意字段=4th IFAC Workshop on Engine and Powertrain Control, Simulation and Modeling, E-COSM 2015"

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modeling and simulation of a Hybrid Dual-Clutch Transmission powertrain 5

Modeling and Simulation of a Hybrid Dual-Clutch Transmission...

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5th International-Federation-of-Automatic-control (ifac) Conference on engine and powertrain control, simulation and modeling (e-cosm)

作者： Mrochen, Michael A. Sawodny, Oliver Univ Stuttgart Inst Syst Dynam D-70569 Stuttgart Germany

More and more modern passenger cars use hybrid electric propulsion sources that combine the advantages of internal combustion engines (ICe) and electric machines (eM). there exists a wide variety of different hybrid electric vehicle topologies and realizations. To compete in this market, Magna Transmission Systems (2015) has presented the 7HDT300, a hybridized dual-clutch transmission (DCT). In this transmission, an eM is connected side-by-side to one of the two sub-transmissions via a gear reduction set. this allows a considerably smaller highspeed eM, which is lighter and more cost-effective, without affecting the powertrain length. Furthermore, the eM and the ICe can use different gears, so that both can work within their optimal efficiency range. this contribution introduces a complete model of a hybrid DCT using a flexible multibody approach for the drivetrain, including the clutch actuation and all torques occurring in the powertrain, based on physical models. With this, the most common driving use cases can be simulated, e.g. acceleration from stillstand, driving with either the ICe or the eM, shifting gears, and starting the ICe with the eM using the clutch. especially the latter scenario obliges an accurate model of the ICe, including the starting behavior and extending beyond the often used engine maps, which are only valid for a running engine. With a suitable set of parameters, the proposed model shows a physically reasonable behavior, making it possible to perform simulations of real vehicles. Moreover, the model is the basis for simplifications towards a model based control design. (C) 2018, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved.

关键词： Automotive Hybrid powertrain Dual-Clutch Transmission modeling simulation

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Model and discretization impact on oscillatory optimal control for a diesel-electric powertrain 4

Model and discretization impact on oscillatory optimal contr...

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Sivertsson, Martin eriksson, Lars Vehicular Systems Dept. of Electrical Engineering Linköping University LinköpingSE-581 83 Sweden

A mean value engine model is used to study optimal control of a diesel-electric powertrain. the resulting optimal controls are shown to be highly oscillating for certain operating points, raising the question whether this is an artifact of discretization, modeling choices or a phenomenon available in real engines. Several model extensions are investigated and their corresponding optimal control trajectories are studied. It is shown that the oscillating controls cannot be explained by the implemented extensions to the previously published model, nor by the discretization, showing that for certain operating points the optimal solution is periodic. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved..

关键词： engines

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An objective analysis of drivability for two wheeler powertrain with control oriented dynamic model 4

An objective analysis of drivability for two wheeler powertr...

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Das, Himadri B. evangelou, Simos A. Dhinagar, Samraj J. Imperial College United Kingdom TVS Motor Company India

the objective of this work is to estimate drivability characteristics parameters of two wheeler powertrain with control oriented powertrain model. the evaluation is essential for defining drivability characteristics for a future electric variable transmission (eVT) powertrain. the mathematical model for the complete powertrain is developed using suitable modeling approaches for the different sub-modules of the complete system. the Spark Ignition (SI) engine model used for this work is developed from mean value model approach and experimentally validated with test data from TVS Motor Company, India. the model is integrated with two types of transmission models, Continuous Variable Transmission (CVT) and Manual Transmission (MT). It simulates dynamic power-flow from the engine to wheel for analyzing longitudinal drivability of the vehicle for both powertrain configurations. It is proposed that the drivability can be measured with certain parameters which show good correlation with subjective assessments for vehicle launch as well as tip in condition. the objective assessment of both types of powertrains is performed using the above mentioned powertrain models. the results of the simulation for drivability tests are discussed in this paper. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved..

关键词： powertrains

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A diesel engine model including exhaust flap, intake throttle, LP-eGR and VGT. Part I: System modeling 4

A diesel engine model including exhaust flap, intake throttl...

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Reß, Johannes Stürzebecher, Christoph Bohn, Christian Märzke, Frank Prase, Robert Institute of Electrical Information Technology Clausthal University of Technology Clausthal-Zellerfeld Germany IAV GmbH Ingenieurgesellschaft Auto und Verkehr Gifhorn Germany

A mean-value model of a diesel engine with variable geometry turbocharger, intake throttle, exhaust flap and low pressure exhaust gas recirculation throttle is developed in this paper. To simplify the model, the number of states is reduced to a minimum. thus, the complete model has eleven states. the model consists of submodels which were optimized by polynomial functions. the optimization parameters are linear coefficients of the polynomial functions. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved..

关键词： Diesel engines

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powertrain sizing of electrically supercharged internal combustion engine vehicles 4

Powertrain sizing of electrically supercharged internal comb...

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Murgovski, Nikolce Marinkov, Sava Hilgersom, Daniël De Jager, Bram Steinbuch, Maarten Sjöberg, Jonas Department of Signals and Systems Chalmers University of Technology S-Gothenburg41296 Sweden Department of Mechanical Engineering Eindhoven University of Technology P.O. Box 513 MB Eindhoven5600 Netherlands

We assess the concept of electrically supercharged internal combustion engines, where the supercharger, consisting of a compressor and an electric motor, draws electric power from a buffer (a battery or a supercapacitor). In particular, we investigate the scenario of downsizing the engine, while delivering high power demands by supercharging. Simultaneously, we seek the optimum buffer size that provides sufficient electric power and energy to run the supercharger, such that the vehicle is able to deliver the performance required by a driving cycle representing the typical daily usage of the vehicle. We provide convex modeling steps that formulate the problem as a second order cone program that not only delivers the optimal engine and buffer size, but also provides the optimal control and state trajectories for a given gear selection strategy. Finally, we provide a case study of sizing the engine and the electric buffer for different compressor power ratings. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved..

关键词： Convex optimization

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Implementation of a novel hydraulic hybrid powertrain in a sports utility vehicle 4

Implementation of a novel hydraulic hybrid powertrain in a s...

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Sprengel, Michael Bleazard, Tyler Haria, Hiral Ivantysynova, Monika Purdue University West LafayetteIN United States

Hydraulic hybrid transmissions offer an efficient and high performance alternative to electric hybrid transmission in on-road vehicles. One of the principle benefits of hydraulic over electric hybrids is the higher power density offered by their energy storage media. this enables hydraulic hybrids to capture virtually all of the available kinetic energy from braking. In contrast electric hybrids are often forced to dissipate part of this energy through friction brakes due to the lower power density inherent in their energy storage media. To date various hydraulic hybrid architectures have been investigated and put into production. However as is typically true there always exists room for improvement. this paper details the integration of a novel blended hydraulic hybrid transmission with improved performance and efficiency into a demonstration vehicle. Also included is a discussion of various unique control strategies which were designed for this powertrain as well as a discussion of initial measurement. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved..

关键词： energy storage

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Power-split hybrid electric powertrain design with two planetary gearsets for light-duty truck applications 4

Power-split hybrid electric powertrain design with two plane...

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Dagci, Oguz H. Peng, Huei Grizzle, Jessy W. Department of Electrical Engineering and Computer Science University of Michigan Ann ArborMI48109 United States Department of Mechanical Engineering University of Michigan Ann ArborMI48109 United States

the goal of this paper is to study all feasible power-split hybrid electric powertrains with two simple planetary gearsets (PGs) that can meet light-duty truck requirements. the powertrains are explored and designed using a holistic approach, which includes automated system configuration search, automated static and dynamic equation derivation, practicality check, mode transitionability analysis, powertrain performance analyses including gradeability, launch torque, overtaking torque, 0-60mph time and fuel economy improvement potential. In the end, four two-mode power-split hybrid electric powertrains that meet all the requirements are identified. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved..

关键词： Hybrid vehicles

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A second generation heat transfer simulator for single-cylinder engines to replicate multi-cylinder engine dynamics 4

A second generation heat transfer simulator for single-cylin...

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Malouf, First Travis C. Bauer, Second Michel Moskwa, third John J. University of Wisconsin Madison United States University of Stuttgart Germany

Researchers in the powertrain control Research Laboratory (PCRL) at the University of Wisconsin-Madison have developed single-cylinder engine transient test systems that control the instantaneous dynamic cylinder boundary conditions of these engines to replicate those in the target multi-cylinder engine performance and dynamics. the overall goal is to exploit the benefits of the singlecylinder engine, while eliminating the negative aspects of this device, and to have the single-cylinder "think" it is dynamically operating at any location within a multi-cylinder engine, with the same transient operation. this paper describes the latest developments in controlling the heat transfer geometry and dynamics of the single-cylinder engine to meet these goals. this is a second generation heat transfer simulator (HTS2) that addresses challenges and issues raised from the experimental operation of the original HTS, and that significantly simplifies the control strategies. there is a brief introductory section explaining the overall transient test system and HTS2's role in this system, a presentation of the operational analysis of the heat transfer system, the design and construction of the HTS2, and preliminary performance results. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved..

关键词： Heat transfer

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Priority-based multi-level monitoring of signal integrity in a distributed powertrain control system 4

Priority-based multi-level monitoring of signal integrity in...

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Kukkala, Vipin Kumar Bradley, thomas H. Pasricha, Sudeep Colorado State University Fort CollinsCO80523 United States

With the increasing numbers and importance of electronic control Units (eCUs) in modern automobiles, there is a need to monitor system and signal integrity to enable desired system behavior. Among the various signals in a vehicle, those associated with torque commands must be prioritized over others while preserving signal integrity as they have a large impact on meeting the powertrain performance and safety requirements. In the case of a Hybrid electric Vehicle (HeV), there are multiple torque actuators (Motor, ICe) that need to be controlled and failure to do so can damage the powertrain. Hence in all cases, the torque requested by the driver should be the same as the sum of the outputs of all the torque actuators and within the limits, which is referred to as ensuring Torque Security (TS). In this paper, we propose a priority-based multi-level signal integrity monitoring technique in which we divide controller signals into different groups and monitor them by making use of performance counters. the proposed technique was implemented and verified using Hardware-In-the-Loop (HIL) testing as a part of the Colorado State University (CSU) ecoCAR3 advanced vehicle technology competition. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved.

关键词： control systems

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Dual-loop control of free piston engine generator 4

Dual-loop control of free piston engine generator

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4th ifac workshop on engine and powertrain control, simulation and modeling, e-cosm 2015

作者： Gong, Xun Zaseck, Kevin Kolmanovsky, Ilya Chen, Hong State Key Laboratory of Automotive Simulation and Control Jilin University China Department of Control Science and Engineering Jilin University China Aerospace Engineering University of Michigan Ann Arbor United States

the precise control of piston motion is the key to guaranteeing reliable free piston engine generator (FPeG) operation. this paper presents a dual-loop controller to manage piston motion in a free piston engine. In this paper, the piston motion dynamics are represented by a discrete-time model system which derived by energy balance while the airflow dynamics are represented by a mean value model. the outer-loop adjusts the fuel quantity and load change rate by a model predictive control (MPC) that tracks clearance height set-points. the desired cylinder airflow is calculated using the desired fuel amount from MPC assuming stoichiometric air-to-fuel ratio. A nonlinear inner loop controller is designed to regulate the throttle to meet the airflow demand. the design of the inner loop controller is based on the Triple Step method. In simulation, the proposed controller successfully tracks the target piston clearance height and satisfies the constraints during an instantaneous electrical load change while maintaining a stoichiometric air-fuel ratio. © 2015, ifac (International Federation of Automatic control) Hosting by elsevier Ltd. All rights reserved..

关键词： Model predictive control

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