Your Selections

Honda Technical Research Institute
Show Only

Collections

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Events

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Verification of Motorcycles Riding Test Procedure for Common Data of Dynamic Characteristics

Honda Technical Research Institute-Masayuki Baba
Bridgestone-Kazumi Tsukahara
  • Technical Paper
  • 2006-08-0294
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
Motorcycles have inherent instability because of their structure. It is difficult to take data of motorcycle characteristics when motorcycles are running because rider's motion affects motorcycle's motion. In Two-Wheeled Vehicle Dynamics Committee, our working group for common data of motorcycle characteristics was established in order to construct common riding test and take common data of the motorcycles characteristics. In this paper, motorcycles riding test which was planned by working group is introduced. Transient tests by impulsive steering torque, slalom tests and lane change tests were performed and the roll, yaw and pitch rates, the three-dimensional accelerations, the steering torque and the steering angle were measured. It is verified from experimental results that usefulness of motorcycles riding test proposed by the working group.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

An Accurate Idle Speed Control for the Gasoline Engine With a Variable Valve Actuation

Honda Technical Research Institute-Kosuke Higashitani, Yuji Yasui, Masahiro Sato
  • Technical Paper
  • 2006-08-0007
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
In this research, the new concept idle speed control is designed for the gasoline engine with a variable valve actuation. This control is based on two-degree-of-freedom sliding mode algorithm. It controls engine speed by altering both the valve lift and the ignition timing of the engine. Altering the valve lift performs to compensate for large error of engine speed caused by the change of engine load, and altering the ignition timing for small error.As a result, this control can reduce the engine speed and dramatically improves the stability of idle speed control
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Stabilization on a Control for Moment of Inertia of EPS

Honda Technical Research Institute-Yoshihiro Oniwa, Yasuo Shimizu
  • Technical Paper
  • 2006-08-0225
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
In this research, we investigated to consist both control design methods prevent moment of inertia from acting on steer-feeling and stabilize the EPS (Electric Power Steering system). Considering influence on steer-feeling by the moment of inertia, we will propose the evaluating method that is possible to apply from the region where the influence by the moment of inertia appears strong to the region where the system requires high stability. After explaining the control design method based on this evaluation, we explain techniques for improving the stability without decrease in steer-feeling. Finally, we confirmed the effectiveness of proposed method by gain-margin and vehicle properties.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Study of Interior Sound Preferences at Acceleration

Honda Technical Research Institute-Kousuke Noumura, Junji Yoshida
  • Technical Paper
  • 2006-08-0260
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
This paper describes car interior sound preferences in general public. Subjective evaluation experiments were performed in Japan, Germany and the United States to investigate the interior sound preferences. Two hundred subjects in each country (600 total) participated in the experiment. As a result, four kinds of preferences were found. A sound preference evaluation system was developed to calculate numeric preference values based on sound stimuli recorded using an artificial head microphone.Furthermore, subjects' characteristics in each kind of preference were clarified through questionnaires. The results showed that women, older people and people not interested in cars preferred quiet sound, while men, younger people, and people who like cars preferred powerful sound.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Identification of Modal Parameters From Order Tracking Data

Honda Technical Research Institute-Motoyasu Sakaguchi
  • Technical Paper
  • 2006-08-0156
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
The identification of modal parameters of an engine under operational condition based on the subspace method is studied. By using order-tracking data the accuracy of analysis is improved because the order components appear conspicuously in engine vibration. The verification of validity of the method by an excitation test and an application to real engine vibration are described in this paper.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Investigation About Mesh of EPS Worm Gear With New Tooth Profile

Honda Technical Research Institute-Katsuji Watanabe, Yasuo Shimizu, Yasuhiro Terada
  • Technical Paper
  • 2006-08-0227
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
Recently vehicles are getting larger, and EPS motor assist torque is increased. This leads to issue involving enlargement worm wheel diameter of IPS worm gear. To address this issue, the authors examined single-threaded worm and its fundamental factors that cause mesh of EPS worm gear worse from working of gear. After details, a new worm gear is proposed. This paper describes proposed new tooth profile, and its construction. Moreover, this worm gear was manufactured, and was installed into EPS, and was tested about mesh characteristics. As results, this proposed profile realizes mesh characteristics of an aim.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Exploratory Study of an Airbag Concept for a Large Touring Motorcycle

Honda Technical Research Institute-Yuki Kobayashi, Takeshi Kuroe, Hideo Namiki, Satoshi Iijima
  • Technical Paper
  • 2006-08-0302
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
Honda has been researching the feasibility of airbags mounted on a motorcycle. Reporting is made on the results of 12 cases of full-scale impact tests in seven crash configurations based on ISO13232 Revision 1, and on the results of the computer simulations of 200 crash configurations. Furthermore, full-scale impact tests of high-speed configurations were conducted to better understand the effectiveness of the airbag system.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Measurement Technology for Door-Closing Sound Analysis

Honda Technical Research Institute-Jun-ichi Kidachi
Brüel & Kjaer Japan-Takashi Tomita, Tsutomu Takasu
  • Technical Paper
  • 2006-08-0162
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
When clarifying door-closing sound, it is preferable to investigate the time history operational deflection shape (ODS) of the outer door panel when the door is being closed, as well as the mode of the vibration. However, in conventional frequency response (FRF) measurement, the phenomenon is an impact signal and it is difficult to determine the boundary conditions of the location from which the door-closing sound is emitted. To overcome this, operational modal analysis using acoustic excitation was used. Also, to better understand the acoustical radiation of low-order frequencies, improved time domain acoustical holography, in which the low-frequency limit does not depend upon the size of the microphone array, was used, and the effectiveness of these measurement tools was examined.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

A Study of Radiation Noise for Motorcycle Engine

Honda Technical Research Institute-Hidetaka Miki, Hiroyuki Kuwahara
  • Technical Paper
  • 2006-08-0160
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
In recent motorcycles, radiated noise from engine surface dominates high percentage since enough measures have been taken for other noise sources such as intake and exhaust. But it has been difficult to apply CAE-based techniques to motorcycle-radiated noise due to its relatively high-frequency characteristics. In this study, we modified modelling technique which is endurable for wide range frequency calculation. We determined excitation force to the bearing housings in consideration of combustion force and gear meshing force based on the experimental data. Thus, we achieved noise prediction accuracy up to 3 kHz.
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Evaluation of Road Load Prediction by Multibody Simulation Including Flex-Body~Load Prediction for Durability Using a Tire Model

Honda Technical Research Institute-Hitoshi Haga
  • Technical Paper
  • 2006-08-0092
Published 2006-05-01 by Society of Automotive Engineers of Japan in Japan
In the evaluation of durability, multibody simulation using a tire model is expected to enable prediction of the forces generated on the vehicle when driving over rough roads. As the durability of a vehicle depends on generated forces, the accuracy with which such forces can be predicted by the simulation is a crucial factor in assessing it. This research was aimed at establishing road load prediction. A torsion beam-type suspension and tire were modeled in a multibody simulation that included a flex body. The accuracy of the simulation was evaluated. The evaluation was implemented for static and dynamic phenomena. The drum cleat test setup developed originally was used for evaluation of dynamic phenomena, and the simulation results were compared with the measurements in the time domain. By evaluating the results in the time domain from this research, it was able to confirm that road load prediction by suspension model including a flex body and a tire model in a multibody simulation showed high accuracy.