DISPLAY APPARATUS FOR WORK MACHINE

• US 20170276530A1
• Filed: 03/05/2015
• Published: 09/28/2017
• Est. Priority Date: 09/24/2014
• Status: Abandoned Application

• Current Assignee: Hitachi Construction Machinery Company Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Construction Machinery Company Limited (Hitachi, Ltd.)
• Inventors: NISHIKAWA, Shinji, ISHIKAWA, Kouji, KANETA, Tomoaki
• Application Number:
  US15/509,208
• Publication Number:
  US 20170276530A1
• Time in Patent Office: Days
• CPC Class Codes: B60R 16/02 electric constitutive elements
• CPC Class Codes: E02F 3/32 working downwardly and towards the machine, e.g. with backhoes
• CPC Class Codes: E02F 9/2054 Fleet management
• CPC Class Codes: E02F 9/22 Hydraulic or pneumatic drives for dipper or bucket arm position control E02F3/43, for blade position control for graders E02F3/844; for turntables E02F9/121; for fork-lift trucks B66F9/22
• CPC Class Codes: E02F 9/26 Indicating devices E02F5/145 takes precedence
• CPC Class Codes: E02F 9/267 Diagnosing or detecting failure of vehicles
• CPC Class Codes: G01F 9/001 with electric, electro-mechanic or electronic means G01F9/008 and G01F9/02 take precedence
• CPC Class Codes: G09G 2320/0613 The adjustment depending on the type of the information to be displayed
• CPC Class Codes: G09G 2320/0666 for control of colour parameters, e.g. colour temperature
• CPC Class Codes: G09G 2380/10 Automotive applications
• CPC Class Codes: G09G 5/02 characterised by the way in which colour is displayed details of colour display specific for CRTs G09G1/28; specific for flat matrix panels other than liquid crystal displays G09G3/2003; specific for liquid crystal displays G09G3/3607

Abstract

A work machine evaluates the fuel consumption for the whole engine running period including the time of operation and the time of non-operation of a work implement and informs an operator of the evaluation in real time to prompt fuel-consumption-savings. The work machine has an engine, a hydraulic pump driven by the engine, an actuator driven by a hydraulic fluid delivered by the hydraulic pump, and an operation device that operates the actuator. A display apparatus for the work machine includes a fuel consumption index calculating section that calculates a first fuel consumption index by dividing the operation time of the operation device by the fuel consumption amount of the engine or dividing the fuel consumption amount of the engine by the operation time of the operation device. The first fuel consumption index calculated by the fuel consumption index calculating section is displayed on a display section in real time.

Claims

1. A display apparatus for a work machine having an engine, a hydraulic pump driven by the engine, an actuator driven by a hydraulic fluid delivered by the hydraulic pump, and an operation device that operates the actuator, the display apparatus comprising

a fuel consumption index calculating section that calculates a first fuel consumption index by dividing a time of an operated state of the operation device by a value obtained by adding a fuel consumption amount of the engine in the operated state and a fuel consumption amount of the engine in a non-operated state, or a first fuel consumption index by dividing the value obtained by adding the fuel consumption amount of the engine in the operated state and the fuel consumption amount of the engine in the non-operated state by the time of the operated state of the operation device,

wherein the first fuel consumption index calculated by the fuel consumption index calculating section is displayed on a display section in real time.

2. The display apparatus for a work machine according to claim 1, further comprising

an engine load value calculating section that calculates an operating state information of the engine,

wherein the fuel consumption index calculating section determines increase and decrease in a value of the first fuel consumption index based on the operating state information of the engine calculated by the engine load value calculating section, and

a change status of the first fuel consumption index determined by the fuel consumption index calculating section is displayed on the display section in real time.

3. The display apparatus for a work machine according to claim 2, wherein

the display section is provided with an operating state information display part that displays the operating state information of the engine calculated by the engine load calculating section, and

the change status of the first fuel consumption index determined by the fuel consumption index calculating section is displayed on the operating state information display part in real time.

4. The display apparatus for a work machine according to claim 3, wherein

the operating state information display part is configured by vertically disposing a plurality of display cells in which a lit state and an unlit state are switched in accordance with the operating state information, and

a display color in the lit state of the display cell is changed between a case in which the change status of the first fuel consumption index becomes worse and a case in which the change status of the first fuel consumption index becomes better.

5. The display apparatus for a work machine according to claim 1, wherein the fuel consumption index calculating section is configured to:

divide an operation time of the operation device by a running time of the engine to calculate an engine utilization rate;

divide the fuel consumption amount of the engine by the running time of the engine to calculate time fuel consumption at a present engine utilization rate;

calculate time fuel consumption at a reference utilization rate set in advance as a second fuel consumption index based on the time fuel consumption at the engine utilization rate; and

allow the second fuel consumption index to be displayed on the display section in real time.

6. The display apparatus for a work machine according to claim 1, further comprising

a pressure sensor that senses an operation amount of the operation device,

wherein the fuel consumption index calculating section takes in the operation amount of the operation device sensed by the pressure sensor and calculates an operation time of the operation device in accordance with the operation amount of the operation device.