JPH051786Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a device for measuring the fuel consumption rate of work vehicles such as construction machinery in order to perform work analysis and comparison of fuel consumption rates of the work vehicles. .

BACKGROUND ART Work analysis of construction machinery, such as analysis of heavy load work, medium load work, and low load work, is performed by a measurer measuring time using a stopwatch or the like while visually observing the work situation.

In addition, the fuel consumption rate is determined by measuring the fuel consumption during several cycles and tens of minutes of work, and dividing this fuel consumption by time to obtain the average value.

Problems that the invention aims to solve: Since work analysis is a visual work performed by the measurer,
This is troublesome, has poor reliability, and requires a dedicated person for measurement, which is disadvantageous in terms of cost.

Since the fuel consumption rate is measured as an average value during work, it is not possible to measure the fuel consumption rate for each work condition and it is only approximate, so comparisons of fuel consumption rates between construction machines are also approximate. It is not possible to make accurate comparisons because it is not possible to make comparisons for each working condition.

For example, the fuel consumption rate of this construction machine is determined to be good or bad based on how much fuel it consumes in a day.In reality, it may have operated all day within the engine's rated range, or it may have operated at half-throttle (partial throttle). Since it is not known whether the driver was working slowly or lightly in the load range, it is not possible to make accurate comparisons by measuring the average fuel consumption rate rather than the overall consumption amount.

Means and Effects for Solving the Problems A flow rate sensor 9 that is installed in the fuel system of the engine 5 of the work vehicle and measures the flow rate every predetermined time;
A clock 10, a first calculator 11 that calculates a fuel consumption rate for each predetermined time based on the detected value of the flow rate sensor 9 and the time of the clock 10, and a first setting device that sets the fuel consumption rate during idling. 13, and a second setting device 14 that sets the fuel consumption rate at low load.
, a third setting device 15 for setting the fuel consumption rate during medium load, a fourth setting device 16 for setting the fuel consumption rate for heavy load, and a first setting device 16 for counting the time of the clock 10. - Second, third, fourth, and fifth time counters 17, 18, 19, 20, and 21, and first, second, and second time counters that count the detected value of the flow rate sensor 9.
3rd, 4th, 5th flow count 22, 23, 2
4, 25, 26, the fuel consumption rate calculated by the first computing unit 11 and the fuel consumption rate set by the first to fourth setting units 13 to 16 are compared to determine the working conditions, or 4th hour count 1
a comparator 12 that outputs a count command to any one of the flow rate counters 7 to 20 and any one of the first to fourth flow counters 22 to 25; 1 to 4th flow rate counters 22 to 25
2nd, 3rd, 4th, and 5th calculators 27 for calculating the fuel consumption rates during idling, low load, medium load, and heavy load, respectively, based on the counted flow rate of
28, 29, 30, and a sixth calculator 31 that calculates the average fuel consumption rate over the entire operating time based on the count time of the five-hour counter 21 and the count flow rate of the fifth flow counter 26. Fuel consumption rate measuring device.

With this, the fuel consumption rate during idling, low load, medium load, and heavy load can be measured independently, and the average fuel consumption rate over the entire operating time can be measured.

Embodiment FIG. 2 is an overall view, in which the main body 2 of the measuring device is provided in a portable box 1, and the box 1 is provided with a start/stop button 3, a display 4, etc. A flow rate sensor 9 is provided in the fuel supply pipe 8 between the fuel supply pump 6 and the fuel injection pump 7 in the engine 5 of the machine, and the flow rate sensor 9 detects the flow rate every predetermined time, for example, every second. The detected flow rate is sent into the main body 2.

As shown in FIG. 1, the main body 2 includes a clock 10, a first arithmetic unit 11, a comparator 12, first to fourth setters 13, 14, 15, 16, first to fifth time counters 17, 18, 19, 20, 21, and first to fifth flow counters 22, 23, 24, 25, 26
and second to fifth computing units 27, 28, 29, and 30, and the first computing unit 11 calculates a predetermined value based on the flow rate sent from the flow rate sensor 9 every predetermined time and the time H from the clock 10. The fuel consumption rate q for each hour is calculated and sent to the comparator 12.

The first to fourth setting devices 13 to 16 indicate the fuel consumption rate under different working conditions, for example, the first setting device 13 shows the fuel consumption rate during idling (1 to 15/H), and the second setting device 14 shows the fuel consumption rate during idling. Fuel consumption rate at low load (16-30
/H), the fuel consumption rate at medium load (30 to 50/H) is set in the third setting device 15, and the fuel consumption rate at heavy load (50/H or more) is set in the fourth setting device 16, respectively. The comparator 12 compares the fuel consumption rate q sent from the first calculator 11, and selects the first to fourth time counters 1 from any one of the setters that match.
A count start signal is output to any one of flow counters 7 to 20 and any one of first to fourth flow counters 22 to 25.

As a result, the operating time and flow rate under each work condition are integrated, and the operating time can be displayed on the display 4 to analyze the work, and each value is sent to the second to fifth computing units 27 to 30. The fuel consumption rate q for each work condition is calculated, and by displaying the value on the display 4, the fuel consumption rate q for each work condition (load level) can be measured.

Further, since the total operating time is counted by the fifth time counter 21 and the total flow rate is counted by the fifth flow rate counter 26, the value is calculated by the sixth arithmetic unit 3.
1, the average fuel consumption rate over the entire operating time q=
can be measured.

For example, if the flow rate detected every second by the flow rate sensor 9 is as shown in the table of Fig. 3, A is at idling, B is at low load, C is at medium load,
D is the area under heavy load, and the operating time and average fuel consumption rate under each load are as shown in FIGS. 4 and 5.

Also, if the start/stop button 3 is turned OFF and ON in conjunction with the operating lever of the work equipment,
The fuel consumption rate and required time for each work mode, such as digging, driving, and loading, can be automatically measured. Note that it may be turned OFF and ON manually.

Effects of the invention The fuel consumption rate during idling, low load, medium load, and heavy load can be measured independently.
Because it is possible to measure the average fuel consumption rate over the entire operating time,
Fuel consumption rate of multiple work vehicles when idling,
You can examine and accurately compare the results under low load, medium load, and heavy load.

Further, the judgment as to whether the engine is idling, low load, medium load, or heavy load is made based on the fuel consumption rate calculated by the first calculator 11 and the fuel consumption rate set by the first to fourth setting devices 13 to 16. Since this is done by comparing with the comparator 12, only the flow rate sensor 9 is sufficient as the sensor.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory view of the main body of the measuring device, FIG. 2 is an overall view, FIG. 3 is a table showing the relationship between flow rate and time, and FIGS. 4 and 5. The figure is a table showing the average operating time and fuel consumption rate for each load level. 5 is the engine, 9 is the flow rate sensor.

Claims (1)

[Scope of utility model registration request] a flow rate sensor 9 that is installed in the fuel system of the engine 5 of the work vehicle and measures the flow rate every predetermined time;
A clock 10, a first calculator 11 that calculates a fuel consumption rate for each predetermined time based on the detected value of the flow rate sensor 9 and the time of the clock 10, and a first setting device that sets the fuel consumption rate during idling. 13, and a second setting device 14 that sets the fuel consumption rate at low load.
, a third setting device 15 for setting the fuel consumption rate during medium load, a fourth setting device 16 for setting the fuel consumption rate for heavy load, and a first setting device 16 for counting the time of the clock 10. - Second, third, fourth, and fifth time counts 17, 18, 19, 20, and 21, and first, second, and second time counts for counting the detected value of the flow rate sensor 9.
3rd, 4th, 5th flow count 22, 23, 2
4, 25, 26, the fuel consumption rate calculated by the first computing unit 11 and the fuel consumption rate set by the first to fourth setting units 13 to 16 are compared to determine the working conditions, or 4th hour count 1
a comparator 12 that outputs a count command to any one of the flow rate counters 7 to 20 and any one of the first to fourth flow counters 22 to 25; 1 to 4th flow rate counters 22 to 25
2nd, 3rd, 4th, and 5th calculators 27 for calculating the fuel consumption rates during idling, low load, medium load, and heavy load, respectively, based on the counted flow rate of
28, 29, 30, and the fifth time counter 21
A fuel consumption rate measuring device for a work vehicle, comprising a sixth computing unit 31 which computes an average fuel consumption rate over the entire operating time based on the count time of the flow rate counter 26 and the counted flow rate of the fifth flow rate counter 26.