Title:
VEHICLE
Document Type and Number:
WIPO Patent Application WO/2015/118590
Kind Code:
A1
Abstract:
A suspension characteristic is changed depending on a travel state by a simple structure. An ECU (100) uses a vehicle speed-spring constant setting part (102) to calculate a target spring constant (K) depending on a vehicle speed (V), and uses a spring constant-frequency setting part (103) to calculate a set frequency (f) corresponding to the target spring constant (K). An oscillation input calculation part (104) generates a signal representing an oscillation input (Fv) oscillating at the set frequency (f). A superimposition part (105) sets a value acquired by superimposing the oscillation input (Fv) on a target driving force (F*) to a new target driving force (F*) (F*=F*+Fv). As a result, the wheel exhibits a minute oscillation in a longitudinal direction, resulting in an input of the minute oscillation to a suspension bush. The suspension bush changes in a spring constant and a damping coefficient depending on the frequency of the input minute oscillation. As a result, the suspension characteristic can be changed.
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Inventors:
FUKUDOME HIDEKI (JP)
Application Number:
PCT/JP2014/005815
Publication Date:
August 13, 2015
Filing Date:
November 19, 2014
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
International Classes:
F16F1/38; B60G7/02; B60G17/02; F16F15/00
Foreign References:
JP2013095309A | 2013-05-20 | |||
US5974856A | 1999-11-02 | |||
US6224046B1 | 2001-05-01 | |||
US20030137087A1 | 2003-07-24 | |||
EP1354731A1 | 2003-10-22 | |||
US4610420A | 1986-09-09 | |||
US6047957A | 2000-04-11 |
Attorney, Agent or Firm:
PROSPEC PATENT FIRM (NAGOYA-KS Building 1-18, Taiko 3-chome, Nakamura-ku, Nagoya-sh, Aichi 01, JP)
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