Title:
PRIME MOVER CONTROLLER OF CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2004/029434
Kind Code:
A1
Abstract:
A prime mover controller in a construction machine comprising a hydraulic pump (24) being driven by a prime mover (10), an actuator (5) being driven by pressure oil delivered from the hydraulic pump (24), and a control valve (25) for controlling pressure oil flow from the hydraulic pump (24) to the actuator (5) depending on the operation of a first operating member (22a). The prime mover controller further comprises a first setting means (41) for setting a first set revolution speed Nt of the prime mover (10) depending on the operation of the first operating member (22a), a second setting means (43) for setting a second set revolution speed Nx of the prime mover (10) depending on the operation of a second operating member (34), a member (35) for selecting a first mode or a second mode, and means (30, 13) for controlling the revolution speed of the prime mover to the larger one of the first set revolution speed Nt and the second set revolution speed Nx when the first mode is selected by the selecting member (35) and to the second set revolution speed Nx when the second mode is selected by the selecting member (35).
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Inventors:
Tatsuno, Yukihiro (7-203, Chiyodahouse 1828-3, Niihari, Chiyoda-mach, Niihari-gun Ibaraki, 315-0051, JP)
Satake, Hidetoshi (5-8-15, Fuchu Ishioka-shi, Ibaraki, 315-0013, JP)
Ichimura, Kazuhiro (2394-3, Shimoinayoshi Chiyoda-mach, Niihari-gun Ibaraki, 315-0052, JP)
Satake, Hidetoshi (5-8-15, Fuchu Ishioka-shi, Ibaraki, 315-0013, JP)
Ichimura, Kazuhiro (2394-3, Shimoinayoshi Chiyoda-mach, Niihari-gun Ibaraki, 315-0052, JP)
Application Number:
PCT/JP2002/009964
Publication Date:
April 08, 2004
Filing Date:
September 26, 2002
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (5-1 Koraku 2-chome, Bunkyo-ku, Tokyo, 112-0004, JP)
Tatsuno, Yukihiro (7-203, Chiyodahouse 1828-3, Niihari, Chiyoda-mach, Niihari-gun Ibaraki, 315-0051, JP)
Satake, Hidetoshi (5-8-15, Fuchu Ishioka-shi, Ibaraki, 315-0013, JP)
Ichimura, Kazuhiro (2394-3, Shimoinayoshi Chiyoda-mach, Niihari-gun Ibaraki, 315-0052, JP)
Tatsuno, Yukihiro (7-203, Chiyodahouse 1828-3, Niihari, Chiyoda-mach, Niihari-gun Ibaraki, 315-0051, JP)
Satake, Hidetoshi (5-8-15, Fuchu Ishioka-shi, Ibaraki, 315-0013, JP)
Ichimura, Kazuhiro (2394-3, Shimoinayoshi Chiyoda-mach, Niihari-gun Ibaraki, 315-0052, JP)
International Classes:
B60K25/04; E02F9/22; F02D29/00; F02D31/00; (IPC1-7): F02D29/00
Attorney, Agent or Firm:
Nagai, Fuyuki (Iino Building, 2-1-1 Uchisaiwaich, Chiyoda-ku Tokyo, 100-0011, JP)
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