Integration and Use of Diesel Engine, Driveline and Vehicle Dynamics Models for Heavy Duty Truck Simulation

Assanis, Dennis N.; Bryzik, Walter; Chalhoub, Nabil G.; Filipi, Zoran; Henein, Naeim A.; Jung, Dohoy; Liu, Xiaoliu; Louca, Loucas S.; Moskwa, John J.; Munns, Scott A.; Overholt, James L.; Papalambros, Panos Y.; Riley, S M; Rubin, Zachary J.; Şendur, Polat; Stein, Jeffrey L.; Zhang, Gregory

doi:10.4271/1999-01-0970

Cited by 24 publications

(21 citation statements)

References 13 publications

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“…One of the primary criteria for evaluating truck response, and powertrain performance in general, is based on the ability to accelerate after a sudden increase of driver demand [28]. Figure 4 focuses on such a critical transient schedule, illustrating distance covered, vehicle speed and acceleration, selected gear, and resistance forces.…”

Section: Continuous Acceleration Schedulementioning

confidence: 99%

“…• From the vehicle speed, we were able to calculate the actual engine torque and speed based on a drive-train model (Figure 3) for the vehicle concerned [26,27]. The vehicle model employed in this work has been considerably upgraded from the previously mentioned publications, incorporating, among other things, the effect of the [28][29][30]: Inertia of the equivalent rotating masses (engine, driveshaft, wheels), Tires (inflation pressure, resistance, slip and friction coefficient), Road (gradient and friction coefficient), Transmission (gear number and ratio, speed-dependent mechanical efficiency etc. ), Differential (final drive ratio, inertia, etc.…”

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confidence: 99%

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Analysis of the Effect of Vehicle, Driving and Road Parameters on the Transient Performance and Emissions of a Turbocharged Truck

Giakoumis

Triantafillou

2018

Energies

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Abstract:In this paper, a fundamental analysis of the effects of various influential parameters on the performance and emissions of a turbocharged truck operating under transient conditions is presented. The results derive from a detailed vehicle model that comprises two parts. The first is an engine performance and emissions module that follows a mapping approach, with experimentally derived correction coefficients employed to account for transient discrepancies; this is then coupled to a comprehensive vehicle model that takes into account various vehicle operation attributes such as gearbox, tires, tire slip, etc. Soot, as well as nitrogen monoxide, are the examined engine-out pollutants, together with fuel consumption and carbon dioxide. The parameters examined are vehicular (mass and gearbox), driving (driver 'aggressiveness' and gear-shift profile) and road (type and grade). From the range of values investigated, the most critical parameters for the emission of NO and soot are vehicle mass, driving 'aggressiveness' and the exact gear-change profile. Vehicle mass, driving 'aggressiveness' and road-grade were identified as the most influential parameters for the emission of CO 2 . A notable statistical correlation was established between pollutant emissions (NO, soot) and vehicle mass or road-tire friction, as well as between fueling/CO 2 and vehicle mass, road-tire friction and road grade. It is believed that the results obtained shed light into the effect of critical operating parameters on the engine-out emissions of a truck/bus, underlining at the same time the peculiarities of transient operating conditions.

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Section: Continuous Acceleration Schedulementioning

confidence: 99%

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confidence: 99%

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Analysis of the Effect of Vehicle, Driving and Road Parameters on the Transient Performance and Emissions of a Turbocharged Truck

Giakoumis

Triantafillou

2018

Energies

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“…The research group of Professor Assanis at the University of Michigan has studied transient diesel engine operation [48,49] including starting [50], and focused on whole vehicle simulation and VGT effects [51][52][53]. The latter was accomplished in partnership with the Universities of Iowa, Wayne State and Wisconsin at Madison.…”

Section: Historical Overviewmentioning

confidence: 99%

Review of Thermodynamic Diesel Engine Simulations under Transient Operating Conditions

Rakopoulos¹,

Giakoumis²

2006

SAE Technical Paper Series

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Study and modeling of transient operation is an important scientific objective. This is due to the fact that the majority of daily vehicle driving conditions involve transient operation, with non-linear situations experienced during engine transients. Thus, proper interconnection is needed between engine, governor, fuel pump, turbocharger and load. This paper surveys the publications available in the open literature concerning diesel engine simulations under transient operating conditions. Only those models that include both full engine thermodynamic calculations and dynamic powertrain modeling are taken into account, excluding those that focus on control design and optimization. Most of the attention is concentrated to the simulations that follow the filling and emptying modeling approach. A historical overview is given covering, in more detail, research groups with continuous and consistent study of transient operation. One of the main purposes of this paper is to summarize basic equations and modeling aspects concerning in-cylinder calculations, friction, turbocharger, engine dynamics, governor, fuel pump operation, and exhaust emissions during transients. The various limitations of the models are discussed together with the main aspects of transient operation (e.g. turbocharger lag, combustion and friction deterioration), which diversify it from the steady-state. Some of the most important findings in the field during the last 30 years are presented and discussed. The survey extends to special cases of transient diesel engine simulation, such as second-law analysis, response when the turbocharger compressor experiences surge, and whole vehicle performance. Several methods of improving transient response are also mentioned, based on the various simulations. An easy-to-read tabulation of all research groups dealing with the subject, that includes details about each model developed and engines/parameters studied, is also provided at the end of the paper.

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“…Typically in full vehicle simulations, simple look up tables representing engine torque vs. speed are used to drive the vehicle. However this approach compromises the accuracy of the predictions of engine transient operations since the tables are generated through testing at discrete steady-state operation points (Assanis et al, 1999). Therefore such models fall short when it comes to analysing the transient effects due to both chassis dynamics and powertrain dynamics.…”

Section: Introductionmentioning

confidence: 99%

Energy analysis of powertrain and chassis integrated simulation using a military duty cycle

Jayakumar¹,

Zeman²,

Rizzo³

et al. 2017

IJVP

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Abstract:Military drive cycles typically consist of complex terrains, which include rough and deformable surfaces, steep grades, and sharp turns, which is a contrast to the commercial and passenger vehicle cycles. Typically, a one dimensional (1D) powertrain model is utilised to simulate and predict energy usage over a given drive cycle in GT-SUITE. This 1D model does not take into account lateral dynamics, short wavelength excitations, or tyre performance. These omissions are typically valid for straight line simple terrains where transient conditions are minimal. For complex terrains, such as the aforementioned military cycles, these assumptions are no longer valid and chassis dynamics need to be considered. This paper will demonstrate a transient powertrain dynamic model built in GT-SUITE and a comprehensive chassis dynamic model built in MSC.Adams/Car integrated through a co-simulation framework. It will include a detail analysis to describe the effects of the aforementioned phenomena on the vehicle performance. 90 D.M. Rizzo et al.Keywords: military; fuel economy; co-simulation.Reference to this paper should be made as follows: Rizzo, D.M., Kumaran, P., Zeman, J. and Jayakumar, P. (2017) 'Energy analysis of powertrain and chassis integrated simulation using a military duty cycle', Int.

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Integration and Use of Diesel Engine, Driveline and Vehicle Dynamics Models for Heavy Duty Truck Simulation

Cited by 24 publications

References 13 publications

Analysis of the Effect of Vehicle, Driving and Road Parameters on the Transient Performance and Emissions of a Turbocharged Truck

Analysis of the Effect of Vehicle, Driving and Road Parameters on the Transient Performance and Emissions of a Turbocharged Truck

Review of Thermodynamic Diesel Engine Simulations under Transient Operating Conditions

Energy analysis of powertrain and chassis integrated simulation using a military duty cycle

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