Construction machine

• US 7,571,775 B2
• Filed: 02/22/2007
• Issued: 08/11/2009
• Est. Priority Date: 08/19/2003
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Hoshi, Kouji, Matsuda, Mitsunori
• Primary Examiner(s): Hartmann; Gary S
• Application Number:
  US11/709,139
• Publication Number:
  US 20070156319A1
• Time in Patent Office: 901 Days
• Field of Search: 172/2, 172/3, 172/6, 172/9, 373/48, 373/82, 701/50, 701/101
• US Class Current: 172/2
• CPC Class Codes: E02F 9/26 Indicating devices E02F5/145 takes precedence
• CPC Class Codes: Y02P 60/14 Measures for saving energy, e.g. in green houses

Abstract

To provide a construction machine capable of encouraging an operator to perform the driving and the operation for enhancing fuel efficiency. The construction machine includes information providing means 30 to notify the operator of the information such as the operation and/or an operational method or the like to enhance the fuel efficiency. The present construction machine provides the information by monitor display on a monitor screen 26 that is provided in an operator'"'"'s cabin 11. When operating machine levers 19 and 20 are positioned at a neutral position, if an engine 40 has the idle revolution number not less than a predetermined time, the information providing means 30 provides the information such as the operation or the like to enhance the fuel efficiency.

Claims

1. A construction machine, comprising;

detecting means for detecting whether operating machine levers are positioned at a neutral position;

a revolution sensor for detecting whether the number of revolutions of an engine is the number of idling revolution; and

information providing means for notifying an operator of operation information to enhance fuel efficiency upon idling when said operating machine levers are positioned at the neutral position and idling time exceeds a predetermined time.

2. The construction machine according to claim 1, wherein said construction machine provides the information by monitor display on a monitor screen that is disposed in an operator'"'"'s cabin.

3. The construction machine according to claim 1, further comprising a voice generator, said voice generator providing the information to the operator.

4. The construction machine according to claim 1, further comprising an information transmitter provided outside the construction machine at the side of an administrator of the machine;

and a receiver for receiving the data from the transmitter, the receiver being provided to the side of the driver'"'"'s cabin of the construction machine in order that information is transmitted from the transmitter to the receiver to notify the operator of the information.

5. The construction machine according to claim 1, wherein said information providing means can switch between an ON state to provide the information and an OFF state not to provide the information.