Experimental investigation of power hop in passenger cars

Publikation: Beitrag in FachzeitschriftKonferenzaufsatz in FachzeitschriftForschungPeer-Review

Autoren

  • Simon Eicke
  • Steffen Zemke
  • Ahmed Trabelsi
  • Matthias Dagen
  • Tobias Ortmaier

Organisationseinheiten

Externe Organisationen

  • IAV GmbH
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
FachzeitschriftSAE Technical Papers
Jahrgang2015-June
PublikationsstatusVeröffentlicht - 15 Juni 2015
VeranstaltungSAE Noise and Vibration Conference and Exhibition, NVC 2015 - Grand Rapids, USA / Vereinigte Staaten
Dauer: 22 Juni 201525 Juni 2015

Abstract

In this paper the power hop phenomenon is analyzed and important influencing factors are investigated. The results of driving tests on various road surfaces with different types of cars with longitudinal and transversal mounted engines as well as with front and rear wheel drive are presented. In order to understand and quantify the power hop effect the rotational speed of the individual wheels and the engine are measured. Additionally, the drive shaft torque, the engine movement in its bearings and the vertical deflection of the wheel with respect to the chassis are determined to get detailed knowledge about physical dependencies. It is shown that the rotational speed of the driven wheels is not a sufficient indicator to assess the occurrence of power hop by measurements. Alternatively, the measured longitudinal acceleration at the seat rail provides a good quantification. Nevertheless a detailed analysis of the rotational speed of the driven wheels points out great variations of the amplitude and frequency in dependence of the car. In case of power hop, the sensor information of the engine displacement as well as the drive shaft torque and the rotational speed of the driven wheels show the same frequencies. It is illustrated that the absolute value of the engine torque during acceleration has smaller effect on the power hop frequency but greater impact on the intensity and duration of the oscillations. As a result, it is concluded that a suitable control of the engine torque during acceleration might reduce the phenomenon of power hop.

ASJC Scopus Sachgebiete

Zitieren

Experimental investigation of power hop in passenger cars. / Eicke, Simon; Zemke, Steffen; Trabelsi, Ahmed et al.
in: SAE Technical Papers, Jahrgang 2015-June, 15.06.2015.

Publikation: Beitrag in FachzeitschriftKonferenzaufsatz in FachzeitschriftForschungPeer-Review

Eicke, S, Zemke, S, Trabelsi, A, Dagen, M & Ortmaier, T 2015, 'Experimental investigation of power hop in passenger cars', SAE Technical Papers, Jg. 2015-June. https://doi.org/10.4271/2015-01-2185
Eicke, S., Zemke, S., Trabelsi, A., Dagen, M., & Ortmaier, T. (2015). Experimental investigation of power hop in passenger cars. SAE Technical Papers, 2015-June. https://doi.org/10.4271/2015-01-2185
Eicke S, Zemke S, Trabelsi A, Dagen M, Ortmaier T. Experimental investigation of power hop in passenger cars. SAE Technical Papers. 2015 Jun 15;2015-June. doi: 10.4271/2015-01-2185
Eicke, Simon ; Zemke, Steffen ; Trabelsi, Ahmed et al. / Experimental investigation of power hop in passenger cars. in: SAE Technical Papers. 2015 ; Jahrgang 2015-June.
Download
@article{cb12b7ed7bce479c889076e0a7f7a6bb,
title = "Experimental investigation of power hop in passenger cars",
abstract = "In this paper the power hop phenomenon is analyzed and important influencing factors are investigated. The results of driving tests on various road surfaces with different types of cars with longitudinal and transversal mounted engines as well as with front and rear wheel drive are presented. In order to understand and quantify the power hop effect the rotational speed of the individual wheels and the engine are measured. Additionally, the drive shaft torque, the engine movement in its bearings and the vertical deflection of the wheel with respect to the chassis are determined to get detailed knowledge about physical dependencies. It is shown that the rotational speed of the driven wheels is not a sufficient indicator to assess the occurrence of power hop by measurements. Alternatively, the measured longitudinal acceleration at the seat rail provides a good quantification. Nevertheless a detailed analysis of the rotational speed of the driven wheels points out great variations of the amplitude and frequency in dependence of the car. In case of power hop, the sensor information of the engine displacement as well as the drive shaft torque and the rotational speed of the driven wheels show the same frequencies. It is illustrated that the absolute value of the engine torque during acceleration has smaller effect on the power hop frequency but greater impact on the intensity and duration of the oscillations. As a result, it is concluded that a suitable control of the engine torque during acceleration might reduce the phenomenon of power hop.",
author = "Simon Eicke and Steffen Zemke and Ahmed Trabelsi and Matthias Dagen and Tobias Ortmaier",
year = "2015",
month = jun,
day = "15",
doi = "10.4271/2015-01-2185",
language = "English",
volume = "2015-June",
note = "SAE Noise and Vibration Conference and Exhibition, NVC 2015 ; Conference date: 22-06-2015 Through 25-06-2015",

}

Download

TY - JOUR

T1 - Experimental investigation of power hop in passenger cars

AU - Eicke, Simon

AU - Zemke, Steffen

AU - Trabelsi, Ahmed

AU - Dagen, Matthias

AU - Ortmaier, Tobias

PY - 2015/6/15

Y1 - 2015/6/15

N2 - In this paper the power hop phenomenon is analyzed and important influencing factors are investigated. The results of driving tests on various road surfaces with different types of cars with longitudinal and transversal mounted engines as well as with front and rear wheel drive are presented. In order to understand and quantify the power hop effect the rotational speed of the individual wheels and the engine are measured. Additionally, the drive shaft torque, the engine movement in its bearings and the vertical deflection of the wheel with respect to the chassis are determined to get detailed knowledge about physical dependencies. It is shown that the rotational speed of the driven wheels is not a sufficient indicator to assess the occurrence of power hop by measurements. Alternatively, the measured longitudinal acceleration at the seat rail provides a good quantification. Nevertheless a detailed analysis of the rotational speed of the driven wheels points out great variations of the amplitude and frequency in dependence of the car. In case of power hop, the sensor information of the engine displacement as well as the drive shaft torque and the rotational speed of the driven wheels show the same frequencies. It is illustrated that the absolute value of the engine torque during acceleration has smaller effect on the power hop frequency but greater impact on the intensity and duration of the oscillations. As a result, it is concluded that a suitable control of the engine torque during acceleration might reduce the phenomenon of power hop.

AB - In this paper the power hop phenomenon is analyzed and important influencing factors are investigated. The results of driving tests on various road surfaces with different types of cars with longitudinal and transversal mounted engines as well as with front and rear wheel drive are presented. In order to understand and quantify the power hop effect the rotational speed of the individual wheels and the engine are measured. Additionally, the drive shaft torque, the engine movement in its bearings and the vertical deflection of the wheel with respect to the chassis are determined to get detailed knowledge about physical dependencies. It is shown that the rotational speed of the driven wheels is not a sufficient indicator to assess the occurrence of power hop by measurements. Alternatively, the measured longitudinal acceleration at the seat rail provides a good quantification. Nevertheless a detailed analysis of the rotational speed of the driven wheels points out great variations of the amplitude and frequency in dependence of the car. In case of power hop, the sensor information of the engine displacement as well as the drive shaft torque and the rotational speed of the driven wheels show the same frequencies. It is illustrated that the absolute value of the engine torque during acceleration has smaller effect on the power hop frequency but greater impact on the intensity and duration of the oscillations. As a result, it is concluded that a suitable control of the engine torque during acceleration might reduce the phenomenon of power hop.

UR - http://www.scopus.com/inward/record.url?scp=84939865600&partnerID=8YFLogxK

U2 - 10.4271/2015-01-2185

DO - 10.4271/2015-01-2185

M3 - Conference article

AN - SCOPUS:84939865600

VL - 2015-June

JO - SAE Technical Papers

JF - SAE Technical Papers

SN - 0148-7191

T2 - SAE Noise and Vibration Conference and Exhibition, NVC 2015

Y2 - 22 June 2015 through 25 June 2015

ER -