Analysis of the influence of a vehicle's driveline dynamic behaviour regarding the performance perception at low frequencies

Capitani, Renzo; Delogu, Massimo; Pilo, L.

doi:10.4271/2001-01-3333

Cited by 16 publications

(6 citation statements)

References 3 publications

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“…Output power from transmission goes to driveshaft and is interacting with vehicle body through tire model. This AMESim model is good enough to describe vehicle fore-apt motion under 10~30 Hz [5].…”

Section: Drivability Due To Torque Converter Omissionmentioning

confidence: 95%

Drivability Development Based on CoSimulation of AMESim Vehicle Model and Simulink HCU Model for Parallel Hybrid Electric Vehicle

Hong

Kim

Min

2009

SAE Technical Paper Series

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Parallel Hybrid Electric Vehicle consists of internal combustion engine, engine clutch, motor, automatic transmission, Integrated Starter Generator (ISG), and battery. Due to hybridizations such as using engine clutch to disengage the internal combustion engine and omitting torque converter from the automatic transmission to increase fuel economy, drivability will not be same as conventional vehicle. To ensure drivability comparable to conventional vehicle, dynamic simulation has been utilized to foresee the drivability issues for the proposed hybrid system and ideas for improvements are tested in simulation. CoSimulation of AMESim vehicle model and Simulink Hybrid Control Unit (HCU) model has been used to test and improve HCU logic.

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Section: Drivability Due To Torque Converter Omissionmentioning

confidence: 95%

Drivability Development Based on CoSimulation of AMESim Vehicle Model and Simulink HCU Model for Parallel Hybrid Electric Vehicle

Hong

Kim

Min

2009

SAE Technical Paper Series

View full text Add to dashboard Cite

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“…Fifth mode increases its frequency with stiffness increase, fourth and sixth modes are almost not sensible. The main effect of the DMFW and engine mount stiffness variation is in the frequency range of clusters B and C (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). Reducing the stiffnesses lowers the first powertrain frequency and improves the attenuation in the same range of frequencies.…”

Section: Sensitivity Analysismentioning

confidence: 99%

“…Capitani et al [7] evidenced that the main driveability information have to be searched at about 10 Hz. They emphasized the presence of two main resonances in the longitudinal acceleration spectrum, the first at around 4 -5 Hz (as function of the engaged gear) and the second at twice that value.…”

Section: Introductionmentioning

confidence: 99%

A study on the role of powertrain system dynamics on vehicle driveability

Castellazzi

Tonoli

Amati

et al. 2017

Vehicle System Dynamics

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Vehicle driveability describes the complex interactions between the driver and the vehicle, mainly related to longitudinal vibrations. Today, a relevant part of the driveability process optimization is realized by means of track tests, which require a considerable effort due to the number of parameters (such as stiffness and damping components) affecting this behavior. The drawback of this approach is that it is carried on at a stage when a design iteration becomes very expensive in terms of time and cost. The objective of this work is to propose a light and accurate tool to represent the relevant quantities involved in the driveability analysis, and to understand which are the main vehicle parameters that influence the torsional vibrations transmitted to the driver. Particular attention is devoted to the role of the tire, the engine mount, the dual mass flywheel and their possible interactions. The presented non linear dynamic model has been validated in time and frequency domain and, through linearization of its non linear components, allows to exploit modal and energy analysis. Objective indexes regarding the driving comfort are additionally considered in order to evaluate possible driveability improvements related to the sensitivity of powertrain parameters.

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“…In addition to that hydrogen fuelled FCVs stand second in producing maximum total energy efficiency around 39 %, they are also not preferred since production of fuel cells cost more and results in discharge of enormous heat [16]. When considering a eco friendly approach, both hybrid powertrains (series and parallel) plays a vital role and can produce a maximum total energy efficiency of 36% [17]. Table -3 shows engine to wheel efficiencies of different powertrain configurations under normal driving schedule.…”

Section: Future Powertrain Efficienciesmentioning

confidence: 99%

Improving fuel economy of a Hybrid Electric Powertrain by Downsizing

Ramyaa

2011

IJPSOEM

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This paper aims at the development of a hybrid electric powertrain which is focused on grater fuel economy by downsizing when compared with present and future developed powertrains. In this work, the proposed hybrid vehicle is powered by four systems, a rule based system (RBS) which mainly explores the engine efficiency; a Speed Control System (SCS) which is focused on the speed control of Traction Motor and individual Front Wheel Motors; a Powertrain Feedback System (PFS) which mainly monitors the powertrain efficiency so as to maintain vehicle dynamics appropriately and a Selective Perpetual Motion System (SPMS) through which power management is achieved. The system is preset to work under three driving cycles, an economy mode where the vehicle is operated typically at low speeds or in traffic; a power mode where the vehicle is in steady state driving; a super power mode where more torque and power required to drive the vehicle under heavy load conditions or in hill climbing. The vehicle is designed to work under different configurations of power, torque and voltage to achieve the mode of drive cycle. The current supplied to the motor(s) is kept constant and nominal in rating. In this manner, a brief study about the transient analysis of the proposed vehicle is done, suffering no performance disadvantages to the conventional vehicles.

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Analysis of the influence of a vehicle's driveline dynamic behaviour regarding the performance perception at low frequencies

Cited by 16 publications

References 3 publications

Drivability Development Based on CoSimulation of AMESim Vehicle Model and Simulink HCU Model for Parallel Hybrid Electric Vehicle

Drivability Development Based on CoSimulation of AMESim Vehicle Model and Simulink HCU Model for Parallel Hybrid Electric Vehicle

A study on the role of powertrain system dynamics on vehicle driveability

Improving fuel economy of a Hybrid Electric Powertrain by Downsizing

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