| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a vehicle allowing improvement of fuel economy by expanding a 2WD traveling region in a standby 4WD type vehicle. <P>SOLUTION: Air pressure adjusting devices 220 and 222 are constituted to adjust air pressure of rear tires 210 based on control signals CTL1 and CTL2 from each ECU 230. Rotational frequency sensors 240 and 242 detect each of a rotational frequency NF of a front propeller shaft 150 and a rotational frequency NR of a rear propeller shaft 160. Each of the ECUs 230 controls the air pressure adjusting devices 220 and 222 when the vehicle 10 is in a normal traveling state to adjust air pressure of the rear tires 210 so that a rotational frequency difference between the rotational frequency NF and the rotational frequency NR may be eliminated. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
