CN101310081A - Wheel loader - Google Patents

Wheel loader Download PDF

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Publication number
CN101310081A
CN101310081A CNA2006800424962A CN200680042496A CN101310081A CN 101310081 A CN101310081 A CN 101310081A CN A2006800424962 A CNA2006800424962 A CN A2006800424962A CN 200680042496 A CN200680042496 A CN 200680042496A CN 101310081 A CN101310081 A CN 101310081A
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CN
China
Prior art keywords
energy
open degree
conservation
throttle
driving
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Granted
Application number
CNA2006800424962A
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Chinese (zh)
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CN101310081B (en
Inventor
岩本祐一
高松伸匡
大场元树
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Komatsu Ltd
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Komatsu Ltd
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Publication of CN101310081A publication Critical patent/CN101310081A/en
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Publication of CN101310081B publication Critical patent/CN101310081B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/415—Wheel loaders

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Operation Control Of Excavators (AREA)
  • Indicating Measured Values (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Abstract

A wheel loader in which whether energy saving operation is being performed is easily determined and, if not, the operator is prompted to perform the energy saving operation. In the wheel loader, the speed of an engine is controlled according to the degree of opening of an accelerator pedal by all speed control in which the speed is regulated in substantially the entire speed range of the engine. Whether to display an energy saving operation sign on a display section is determined depending on whether the degree of opening of the accelerator and the actual speed of the engine satisfy predetermined conditions of the energy saving operation, where the energy saving operation sign is a sign for advising the operator to perform the energy saving operation.

Description

Wheel loader
Technical field
The present invention relates to wheel loader.
Background technology
In building machineries such as wheel loader, the Fuel Consumption when hope can reduce when walking and carry out various operation, thus realize energy conservation.Fuel Consumption changes because of driver's operation, and according to different content of operation, Fuel Consumption increases sometimes, reduces sometimes.Therefore, the someone has proposed and can show the required information of operation of urging the driver to reduce fuel consumption to the driver, and with its building machinery (with reference to patent documentation 1) as energy-conservation driving sign.This building machinery comprises the device of measuring specific fuel consumption, and compares and measures the specific fuel consumption that and the goal-setting value of setting.And, when the specific fuel consumption of measuring surpasses the goal-setting value, on display screen, show to be used to urge the prompting that improves fuel consumption.
[patent documentation 1] TOHKEMY 2005-98988 number bulletin
Summary of the invention
According to aforesaid building machinery, can judge that with the goal-setting value whether the driving that the driver carries out is the relative low driving of fuel consume (to call " energy-conservation driving " in the following text), and can urge the driver to improve the energy-conservation driving of fuel consumption by comparing specific fuel consumption.But, the calculating relative complex of specific fuel consumption, therefore expectation can judge whether to be the energy-conservation driving and the building machinery of urging the driver to carry out energy-conservation driving more simply.
The objective of the invention is to, provide a kind of can judging whether more simply also can urge the driver to carry out the building machinery of energy-conservation driving for energy-conservation driving.
The wheel loader that first aspect present invention proposes, it comprises motor, working rig oil pressure pump, working rig, driver's cabin, throttle open degree test section, engine control portion, engine revolution test section, display control unit.The working rig oil pressure pump, the power output of launched machine drives.Working rig is driven from the pressure oil of working rig with the oil pressure pump discharging.Driver's cabin is provided with by the throttle of driver's operation and shows the display part of various information.Throttle open degree test section, the open degree of detection throttle.Engine control portion by carry out the full speed control of speed governing in the roughly full revolution zone of motor, controls engine revolution accordingly with the open degree of throttle.The engine revolution test section, the actual revolution of detection of engine.And whether display control unit satisfies the energy-conservation riving condition of stipulating according to the open degree of throttle and the actual revolution of motor, judges whether to show that to display part the energy-conservation driving prompting that is used to point out the driver to carry out energy-conservation driving shows.
In this wheel loader, the driver can carry out energy-conservation driving by whether showing energy-conservation driving prompting as the sign of driving.In addition, this wheel loader is owing to carry out full speed control, and the actual revolution of the open degree of throttle and motor is corresponding with engine output.Therefore, throttle open degree and engine revolution by easily detecting can judge whether to be in energy-conservation driving condition accurately.According to this formation, in this wheeled loading, can judge whether more simply also can urge the driver to carry out energy-conservation driving for energy-conservation driving.
The wheel loader that second aspect present invention proposes is the wheel loader that first aspect proposes, and wherein energy-conservation driving prompting shows it is to be used to represent that ongoing driving is the energy-conservation driving sign of energy-conservation driving.And display control unit is configured to, and when the actual revolution of the open degree of throttle and motor satisfies energy-conservation riving condition, shows energy-conservation driving sign at display part; And when the discontented podomere of the actual revolution of the open degree of throttle and motor can riving condition, then do not show energy-conservation driving sign at display part.
In this wheel loader, when carrying out energy-conservation driving, show energy-conservation driving sign, when non-energy-conservation driving, then do not show energy-conservation driving sign.Therefore, energy-conservation driving can be easily carried out in the driving of driver by energy-conservation driving sign is shown.
The wheel loader that third aspect present invention proposes is the wheel loader that second aspect proposes, and wherein, also is provided with selection portion in the driver's cabin.Selection portion is used for from first work pattern and comprises engine output selecting the desired work pattern of driver less than first work pattern and the second low work pattern of fuel consumption at interior a plurality of work patterns.And, when the actual revolution of the open degree of selecting first work pattern and throttle and motor satisfies energy-conservation riving condition, display control unit shows energy-conservation driving sign at display part, and when the discontented podomere energy of the actual revolution of the open degree of selecting first work pattern and throttle and motor riving condition, then do not show energy-conservation driving sign at display part.
In this wheel loader, when more paying attention to fuel consumption, select second work pattern, suppress the power output of motor automatically and can carry out the low energy-conservation driving of Fuel Consumption by utilizing selection portion than operation performance.In addition, when paying attention to transaction capabilities,, can carry out the driving that power output is big and transaction capabilities is high of motor by selecting first work pattern.Also have, even when selecting first work pattern,, also can carry out the low energy-conservation driving of Fuel Consumption by energy-conservation driving sign is driven as sign.
The wheel loader that fourth aspect present invention proposes, it is the wheel loader that the third aspect proposes, wherein, energy-conservation riving condition is meant, can make the throttle open degree in the engine output scope of engine output in second work pattern and the actual revolution of motor.
This wheel loader is by driving energy-conservation driving sign as sign, even when selecting first work pattern, and the identical low driving of Fuel Consumption in the time of also can carrying out with selection second work pattern.
The wheel loader that fifth aspect present invention proposes comprises motor, working rig oil pressure pump, working rig, driver's cabin, throttle open degree test section, engine control portion, display control unit.The working rig oil pressure pump, the power output of launched machine drives.Working rig is driven from the pressure oil of working rig with the oil pressure pump discharging.Driver's cabin is provided with the throttle of being operated by the driver, display part, the selection portion that shows various information.Selection portion is used for selecting drivers desired work pattern less than first work pattern and the second low work pattern of fuel consumption at interior a plurality of work patterns from first work pattern and the power output that comprises motor.Throttle open degree test section, the open degree of detection throttle.Engine control portion by carry out the full speed control of speed governing in the roughly full revolution zone of motor, controls engine revolution accordingly with the open degree of throttle.Whether and display control unit is configured to, when selecting first work pattern,, judge whether to show that to display part the energy-conservation driving prompting that is used to point out the driver to carry out energy-conservation driving shows less than the specified standard open degree according to the throttle open degree.
In this wheel loader, the driver can carry out energy-conservation driving by whether showing energy-conservation driving prompting as the sign of driving.In addition, in this wheel loader, owing to carry out full speed control, the open degree of throttle is corresponding with engine output.Therefore, only the throttle open degree by easily detecting can judge whether to be in energy-conservation driving condition accurately.According to this formation, can judge whether simply also can urge the driver to carry out energy-conservation driving for energy-conservation driving.
The wheel loader that sixth aspect present invention proposes is the wheel loader that the 5th aspect proposes, and wherein, energy-conservation driving prompting shows it is to be used to represent that ongoing driving is the energy-conservation driving sign of energy-conservation driving.And when selecting first work pattern and throttle open degree less than the specified standard open degree, display control unit shows energy-conservation driving sign at display part; And when selecting first work pattern and throttle open degree to surpass the specified standard open degree, display control unit does not show energy-conservation driving sign at display part.
In this wheel loader, show energy-conservation driving sign when carrying out energy-conservation driving, energy-conservation driving sign then is in not show state when non-energy-conservation driving.Therefore, the driving of driver by energy-conservation driving sign is shown can be carried out energy-conservation driving.
The wheel loader that seventh aspect present invention proposes, it is the wheel loader that first to the 6th either side is proposed, wherein, when working rig used the pump pressure of oil pressure pump to surpass the first standard pump pressure of regulation, display control unit did not show energy-conservation driving sign at display part.
In this wheel loader, also consider the pump pressure of working rig, judge whether to show energy-conservation driving sign with oil pressure pump.Therefore, can grasp whether carry out energy-conservation driving more accurately.
The wheel loader that eighth aspect present invention proposes is the wheel loader that first to the 6th either side is proposed, and what comprise also that the power output of launched machine drives turns to oil pressure pump, turned to the steering cylinder with the pressure oil driving of oil pressure pump discharging certainly.And when turning to the pump pressure of using oil pressure pump to surpass the second standard pump pressure of regulation, display control unit does not show energy-conservation driving sign at display part.
In this wheel loader, also consider to turn to pump pressure to judge whether to show energy-conservation driving sign with oil pressure pump.Therefore, can grasp whether carry out energy-conservation driving more accurately.
The wheel loader that ninth aspect present invention proposes is the wheel loader that first aspect proposes, and wherein, energy-conservation driving prompting shows it is to be used to represent that ongoing driving is the sign of the high non-energy-conservation driving of fuel consumption.And display control unit is configured to, and when the discontented podomere of the actual revolution of the open degree of throttle and motor can riving condition, shows non-energy-conservation driving sign at display part; And when the actual revolution of the open degree of throttle and motor satisfies energy-conservation riving condition, then do not show non-energy-conservation driving sign at display part.
In this wheel loader, when carrying out the high driving of fuel consumption, show non-energy-conservation driving sign; And when carrying out the low driving of fuel consumption, then do not show non-energy-conservation driving sign.Therefore, the driver can easily carry out energy-conservation driving by not showing the driving of non-energy-conservation driving sign.
The wheel loader that tenth aspect present invention proposes is the wheel loader that the 5th aspect proposes, and wherein, energy-conservation driving prompting shows it is to be used to represent that ongoing driving is the sign of the high non-energy-conservation driving of fuel consumption.And display control unit is configured to, and when the open degree of selecting first work pattern and throttle surpasses the specified standard open degree, then shows non-energy-conservation driving sign at display part; And, then do not show non-energy-conservation driving sign at display part when the open degree of selecting first work pattern and throttle during less than the specified standard open degree.
In this wheel loader, when carrying out the high driving of fuel consumption, show non-energy-conservation driving sign, and when carrying out the low driving of fuel consumption, do not show energy-conservation driving sign.Therefore, the driver can easily carry out energy-conservation driving by not showing the driving of energy-conservation driving sign.
The wheel loader that the present invention the tenth proposes on the one hand is the wheel loader that the 5th aspect proposes, and also comprises when open degree when throttle surpasses described standard open degree, makes the operating physical force increase portion of throttle operation power increase.
In this wheel loader, when the throttle open degree surpasses described standard open degree, increase the operating physical force of throttle.Therefore, the driver can grasp and whether carry out energy-conservation driving by whether showing the variation that demonstration and throttle operation power are pointed out in energy-conservation driving.According to this formation, in this wheel loader, can pass through two aspects, promptly vision and throttle operation sensation urges the driver to carry out energy-conservation driving.
The wheel loader that the present invention the 12 aspect proposes, it comprises motor, working rig oil pressure pump, working rig, driver's cabin, throttle open degree test section, engine control portion, display control unit, operating physical force increase portion.The working rig oil pressure pump, the power output of launched machine drives.Working rig is driven from the pressure oil of working rig with the oil pressure pump discharging.Driver's cabin is provided with by the throttle of driver's operation, the display part of the various information of demonstration.Throttle open degree test section, the open degree of detection throttle.Engine control portion by carry out the full speed control of speed governing in the roughly full revolution zone of motor, controls engine revolution accordingly with the open degree of throttle.Whether display control unit, judges whether to show that to display part the energy-conservation driving prompting that is used to point out the driver to carry out energy-conservation driving shows less than the specified standard open degree according to the open degree of throttle.Operating physical force increase portion when the open degree of throttle surpasses described standard open degree, increases the operating physical force of throttle.
In this wheel loader, the driver can carry out energy-conservation driving by whether showing energy-conservation driving prompting as the sign of driving.In addition, in this wheel loader, the operating physical force of throttle can increase when the open degree of throttle surpasses described standard open degree, so the driver can grasp whether carry out energy-conservation driving according to the variation of throttle operation power.According to this formation, in this wheel loader, can pass through two aspects, promptly vision and throttle operation sensation urges the driver to carry out energy-conservation driving.Also have, in this wheel loader, owing to carry out full speed control, the throttle open degree is corresponding with engine output.Therefore, only the throttle open degree by easily detecting can judge whether to be in energy-conservation driving condition accurately.According to this formation, can judge whether simply also can urge the driver to carry out energy-conservation driving for energy-conservation driving.
Description of drawings
Fig. 1 is the outward appearance lateral view of wheel loader 1;
Fig. 2 is the oil hydraulic circuit of wheel loader 1 and the simple and easy schematic diagram of control system structure;
Fig. 3 is the schematic diagram of display part;
Fig. 4 is the enlarged drawing of electricity-saving lamp;
Fig. 5 is the coupling schematic diagram of engine output torque and pump absorbing torque;
Fig. 6 is the structure of gas pedal and the simple and easy schematic diagram of operation.
Wherein, sign flag:
1 wheel loader
3 working rigs
5 driver's cabins
7 working rig oil pressure pumps
8 turn to and use oil pressure pump
9 steering cylinders
11 motors
13 engine revolution test sections
15 operating portions (selection portion)
25 gas pedals (throttle)
26 display parts
27 throttle open degree test sections
32 electricity-saving lamps (energy-conservation driving sign, the energy-conservation driving prompting of demonstration)
33 engine control portions
34 display control units
43 operating physical force increase portions
The specific embodiment
＜structure 〉
Fig. 1 represents to relate to the wheel loader 1 of one embodiment of the invention.This wheel loader 1, comprise car body 2, be installed in the working rig 3 of car body 2 front portions, be rotated and make when supporting car body 2 car body 2 walkings four tires 4, be equipped on the driver's cabin 5 on car body 2 tops.In addition, as shown in Figure 2, this car body 2 be provided with motor 11, gearbox 6, working rig with oil pressure pump 7, turn to oil pressure pump 8, steering cylinder 9, control part 10.The output torque that produces by motor 11 be assigned to gearbox 6, working rig with oil pressure pump 7, turn to oil pressure pump 8 etc., become the driving force that drives working rig 3 and walking when.In addition, Fig. 1 is the outward appearance lateral view of wheel loader 1, and Fig. 2 is the oil hydraulic circuit of wheel loader 1 and the simple and easy schematic diagram of control system structure.
Motor 11 is a Diesel engine, and sets up the output torque of control motor 11 and the fuel injection device 12 of revolution.In addition, motor 11 is provided with, the engine revolution test section 13 that constitutes by the tachometer generator of detection of engine 11 actual revolutions, and be transfused to control part 10 from the revolution signal of engine revolution test section 13.
The output shaft of motor 11 links to each other with gearbox 6 with the walking with torque converter, and the driving force of motor 11 is passed to tire 4 via gearbox 6.Gearbox 6 can divide a plurality of stages to switch speed reducing ratio from high speed to low speed, and switches speed reducing ratio according to the operation signal from the operating portion of hereinafter describing 15.
Working rig is the variable displacement hydraulic pump of the power output driving of launched machine 11 with oil pressure pump 7, and working rig is provided with adjuster 16 and solenoid electric valve 17 with oil pressure pump 7.Adjuster 16 utilizes by working rig and adjusts the angle of slope of working rig with oil pressure pump 7 swash plates with the pressure oil of oil pressure pump 7 dischargings; Solenoid electric valve 17 comes controlled adjuster 16 according to the control electric current from control part 10.In addition, be provided with and detect the pressure sensor 18 of working rig, be imported into control part 10 from the pump blowdown presssure signal of this pressure sensor 18 with oil pressure pump 7 blowdown presssures.
Working rig 3 for by by working rig with the part that pressure oil drove that oil pressure pump 7 discharges, comprise the lift arm 19 that is installed in car body 2 front portions, the scraper bowl 20 that is installed in these lift arm 19 front ends, working rig cylinder 21 (with reference to Fig. 2).Lift arm 19 is for being used to lift the arm member of the scraper bowl 20 that is installed in front end.Scraper bowl 20 is installed in the front end of lift arm 19.Working rig cylinder 21 is to utilize the drive device for hydraulic that drives lift arm 19 and scraper bowl 20 from working rig with the pressure oil of oil pressure pump 7 dischargings.
Turn to the variable displacement hydraulic pump of oil pressure pump 8, be provided with adjuster 22 and solenoid electric valve 23 for the power output driving of launched machine 11.Adjuster 22 utilizes by turning to the pressure oil adjustment with oil pressure pump 8 dischargings to turn to the angle of slope of using oil pressure pump 8 swash plates; Solenoid electric valve 23 comes controlled adjuster 22 according to the control electric current from control part 10.Steering cylinder 9 quilts use the pressure oil of oil pressure pump 8 dischargings to drive by turning to, and change the direct of travel when walking.In addition, be provided with and be used to detect the pressure sensor 24 that turns to oil pressure pump 8 blowdown presssures, be transfused to control part 10 from the pump blowdown presssure signal of described pressure sensor 24.
Driver's cabin 5 is combination a plurality of steel pipes and steel plates and constituting, and is configured in than the middle body of car body 2 position in the place ahead slightly.Be provided with the gas pedal 25 (throttle) of operating and operating portion 15 (selection portion) in the driver's cabin 5, show the display part 26 of various information etc. by the driver.
Gas pedal 25 is the devices that are used to indicate motor 11 target revolutions, links to each other with the throttle open degree test section 27 that is made of the potentiometer that detects gas pedal 25 open degree etc.The open degree signal that shows gas pedal 25 open degree is sent to control part 10 from throttle open degree test section 27, and control signal is imported into fuel injection device 12 from control part 10.
Operating portion 15 comprises not shown steering wheel, action bars, action button etc., and changes direct of travel, selection dynamic mode (first work pattern) and the economic model (second work pattern) of wheel loader 1, the operations such as speed reducing ratio of selection gearbox 6 by the above-mentioned parts of driver's operation.Dynamic mode be motor power output greater than economic model and when Fuel Consumption is more paid attention to transaction capabilities selected work pattern.Though economic model is for comparing the power output transaction capabilities difference that reduced motor but the low work pattern of Fuel Consumption with dynamic mode.
Display part 26 is for being configured in the display screen in driver's cabin 5 inner seat the place aheads, as shown in Figure 3, the various indicator lamps of when the operation of machines such as stopping brake, lighting 28, the speedometer 29 that shows the speed of travel, fuel gauge 30, show the gear shift indicator 31 of selecteed speed reducing ratio etc.In addition, but on display 26 light on and off be used to show and carry out the electricity-saving lamp 32 (energy-conservation driving sign) that economical and energy saving is driven.In addition, Fig. 4 is the enlarged drawing of electricity-saving lamp 32.
Control part 10 is the parts that are used to control wheel loader 1 driver behavior, comprises engine control portion 33, display control unit 34.
Engine control portion 33 is according to the fuel injection amount of the actual revolution control fuel injection device 12 of the open degree of gas pedal 25 and motor 11.Engine control portion 33 carries out full speed control, can be according to the open degree control engine revolution of gas pedal 25.In addition, at full speed control is meant removing when starting revolution zones roughly all the fuel increment zone, the control that load area carries out speed governing, even load change, also engine revolution roughly can be remained on specified states.
Display control unit 34 is the parts that are used to control display part 26 displaying contents, and whether control shows electricity-saving lamp 32.
Below, the control content of control part 10 is elaborated.
The control content of＜control part 10 〉
[dynamic mode and economic model]
In this wheel loader 1, operating portion 15 is operated the economic model that to select to pay attention to the dynamic mode of transaction capabilities and pay attention to fuel consumption by the driver.
When selecting dynamic mode, the engine output torque property settings becomes the engine output torque line shown in the ELa among Fig. 5, and the absorption torque characteristics is then set the absorption torque wire shown in the PLa for.Absorption moment of torsion that this absorption torque characteristics is a torque converter 14 and working rig are used the decisions such as oil volume discharged of oil pressure pump 7 with the absorption moment of torsion sum of oil pressure pump 7 by walking environment, working load, adjustment working rig.In Fig. 5, it is the monotonically increasing function of variable that absorption torque wire PLa presents with the engine revolution.And, at match point Ma, the output torque of motor 11, working rig are identical with the absorption moment of torsion of oil pressure pump 7 and torque converter 14, and the engine output by absorbing match point Ma, are the maximum horsepower of motor 11, can carry out heavily loaded digging operation efficiently.
In addition, when selecting economic model, the engine output torque property settings becomes the engine output torque line shown in the symbol ELb.And at match point Mb, the output torque of motor 11, working rig are complementary with the absorption moment of torsion of oil pressure pump 7 and torque converter 14.As mentioned above, in economic model, owing to comparing on the low match point Mb of fuel consumption with match point Ma in the dynamic mode, output torque, the working rig of motor 11 are complementary with the absorption moment of torsion of oil pressure pump 7 and torque converter 14, can use motor 11 in good fuel efficiency zone, can reduce fuel consumption.
[light on and off of electricity-saving lamp 32]
In this wheel loader 1, electricity-saving lamp 32 by lighting display part 26 or extinguish electricity-saving lamp 32, can urge the driver to carry out the low energy-conservation driving of fuel consumption, wherein, when the driving of carrying out as the driver is economical energy-conservation driving, light the electricity-saving lamp of display part, when carrying out non-energy-conservation driving, then extinguish electricity-saving lamp.
Display control unit 34 is configured to, and when the open degree of selecting dynamic mode and gas pedal 25 and engine revolution satisfy energy-conservation riving condition, shows electricity-saving lamps 32 at display part 26; And when the open degree of selecting dynamic mode and gas pedal 25 and the discontented podomere energy of engine revolution riving condition, then do not show electricity-saving lamps 32 at display part 26.This energy-conservation riving condition is meant, can make gas pedal 25 open degree and engine revolution in the engine output scope of power output in economic model of motor.Promptly, control part 10 is configured to, when detect can make motor power output in engine output torque line ELb scope (drawing the scope of shade) shown in Figure 5 gas pedal 25 open degree and during engine revolution, point light energy-saving lamp 32, and when detecting, extinguish electricity-saving lamp 32 above the open degree of the gas pedal 25 of this scope and engine revolution.
In addition, when selecting economic model,, show electricity-saving lamp 32 because engine output always is in the scope of engine output torque line ELb always.
＜feature 〉
In this wheel loader 1,, when not carrying out energy-conservation driving, then extinguish electricity-saving lamp 32 when carrying out economical energy-conservation driving time point light energy-saving lamp 32.Constitute according to this, can tell that by whether showing electricity-saving lamp 32 driver is the engine output scope that energy-conservation driving is recommended.Therefore, the driver as the sign of driving, so that electricity-saving lamp 32 is lighted, can easily carry out energy-conservation driving by operation gas pedal 25 with electricity-saving lamp 32.
In addition, in this wheel loader 1,, can grasp engine output accurately from gas pedal 25 open degree of easy detection and the actual revolution of motor 11 owing to carry out full speed control.Therefore, according to the open degree of gas pedal 25 and the actual revolution of motor 11, can judge whether to carry out energy-conservation driving easy and accurately.
＜other embodiment 〉
(1)
In the above-described embodiments, point out energy-conservation driving by the electricity-saving lamp of when carrying out economical energy-conservation drive, lighting 32, but also can be by pointing out energy-conservation driving at the non-energy-conservation driving light (non-energy-conservation driving sign, energy-conservation driving prompting show) that carries out lighting when fuel consumption height and non-economy type are energy-conservation to be driven.
In this case, display control unit 34 is configured to, when the discontented podomere of the actual revolution of the open degree of gas pedal 25 and motor 11 can riving condition, then show non-energy-conservation driving light at display part 26, and when the actual revolution of the open degree of gas pedal 25 and motor 11 satisfies energy-conservation riving condition, then do not show non-energy-conservation driving light at display part 26.For other formations and control, then same as the previously described embodiments.
By aforesaid non-energy-conservation driving light, also can urge the driver to carry out energy-conservation driving.That is, energy-conservation driving can be easily carried out in the driving of driver by non-energy-conservation driving sign is not shown.
(2)
In the above-described embodiments, judge whether to show electricity-saving lamp 32, but also can a open degree judge whether to show electricity-saving lamp 32 according to gas pedal 25 according to the open degree of gas pedal 25 and the actual revolution of motor 11.That is, display control unit 34 is arranged to,, is shown electricity-saving lamps 32 at display part 26 when the open degree of selecting dynamic mode and gas pedal 25 during less than the specified standard open degree; And when the open degree of selecting dynamic mode and gas pedal 25 surpasses the specified standard open degree, then do not show electricity-saving lamp 32 at display part 26.In addition, the standard open degree is meant, for carrying out the open degree in the engine output scope that energy-conservation driving recommends, for example, the open degree in the economic model in the engine output scope.For other formations and control, then same as the previously described embodiments.
In controlling at full speed,, therefore, also can grasp the power output of motor relatively accurately only according to the open degree of gas pedal 25 because the open degree of gas pedal 25 is roughly corresponding with engine output.
In addition, also can be by showing that carrying out the high non-energy-conservation driving of fuel consumption indicates and point out energy-conservation driving.In this case, display control unit 34 is configured to, when the open degree of selecting dynamic mode and gas pedal 25 surpasses the specified standard open degree, show non-energy-conservation driving sign at display part 26, and, then do not show non-energy-conservation driving sign at display part 26 when the open degree of selecting dynamic mode and gas pedal 25 during less than the specified standard open degree.
By aforesaid non-energy-conservation driving light, also can urge the driver to carry out energy-conservation driving.That is, energy-conservation driving can be easily carried out in the driving of driver by non-energy-conservation driving sign is shown.
(3)
Gas pedal 25 open degree in the foregoing description and the actual revolution of motor 11 or only judge the open degree of gas pedal 25 also can be considered the pump pressure of working rig with oil pressure pump 7.Promptly, display control unit 34 is arranged to, even satisfy under the situation of energy-conservation riving condition in the open degree of gas pedal 25 and the revolution of motor, the first standard pump pressure that surpasses regulation with the pump pressure of oil pressure pump 7 when working rig (for example, maximum pump pressure 80%) time, the control that can extinguish electricity-saving lamp 32.According to this formation, can grasp engine output accurately, can more correctly urge the driver to carry out energy-conservation driving.
(4)
Gas pedal 25 open degree in the foregoing description and the actual revolution of motor 11 or only judge the open degree of gas pedal 25 also can consider to turn to the pump pressure with oil pressure pump 8.That is, display control unit 34 is arranged to, when turning to when surpassing the second standard pump pressure (for example, maximum pump pressure 80%) control that also can extinguish electricity-saving lamp 32 with the pump pressure of oil pressure pump 8.According to this formation, can grasp engine output accurately, can more correctly urge energy-conservation driving to the driver.
(5)
In above-mentioned other embodiment (2), also can be provided with the operating physical force increase portion 43 that the operating physical force that makes throttle when the open degree of gas pedal 25 surpasses described standard open degree increases.The detailed structure of gas pedal 25 is as described below.
As shown in Figure 6, gas pedal 25 comprises pallet body 41, pedal support component 42, operating physical force increase portion 43.
Pallet body 41 is that one end of pallet body 41 is installed on the base plate of driver's cabin 5 by the parts of driver's pin operation, and can be the center rotation with first axis of rotation 44.In addition, the state of gas pedal 25 when Fig. 6 (a) represents not by driver's operation (below, claim " state of not operating ").The state that Fig. 6 (b) expression gas pedal 25 is never operated is only operated the state (below, claim " first mode of operation ") of the first operational ton θ A.And Fig. 6 (c) expression gas pedal 25 further is operated to the state (below, claim " maximum mode of operation ") of maximum operational ton θ Max from first mode of operation.In addition, the first operational ton θ A and maximum operational ton θ Max are the variable quantities of the work angle that begins of the state never operated.
Pedal support component 42 is the parts of sustain pedal main body 41 pars intermedias, and an end of pedal support component 42 is installed on the pallet body 41, and can be the center rotation with second axis of rotation 32.In addition, rotatable rotary wheel 46 is installed on the other end of pedal support component 42, and connects with the inclined plane 50 that is arranged on driver's cabin 5 bottom surfaces.Also have,, be provided with the projection 47 that projects upwards at the pars intermedia of pedal support component 42.When made pallet body 41 by driver's operation pallet body 41 is that the swiveling wheel 46 of center rotation (with reference to the arrow A W1 of figure 6 (b)), pedal support component 42 rolls on inclined plane 50 in (with reference to the arrow A W2 of Fig. 6 (b)) with first axis of rotation 44, and pedal support component 42 is that the center rotates (with reference to the arrow A W3 of Fig. 6 (b)) with second axis of rotation 32.In addition, not shown elastomeric element is installed on the pedal support component 42, pedal support component 42 makes pallet body 41 return to the angular force of the state direction of not operating to applying.
Operating physical force increase portion 43 is for being installed in the leaf spring of pallet body 41 inboards, when the operational ton of gas pedal 25 during greater than the first operational ton θ A, the operating physical force of gas pedal 25 increased.Promptly, when pallet body 41 when thereby rotation makes that the angle of inclination of pallet body 41 changes near the direction of base plate, operating physical force increase portion 43 is near the projection 47 of pedal support component 42, and shown in Fig. 6 (b), when reaching the first operational ton θ A, the operational ton of pallet body 41 contacts with projection 47.And, shown in Fig. 6 (c), in case the operational ton of pallet body 41 greater than the first operational ton θ A, projection 47 pressing operation power increase portions 43 make operating physical force increase portion 43 that elastic deformations take place.Constitute according to this, increase the operating physical force of gas pedal 25.In addition, this first operational ton θ A is corresponding with above-mentioned standard open degree.
In addition, the open degree of gas pedal 25 (below, claim " throttle open degree ") be when gas pedal 25 is in the state of not operating, to be " 0% ", and increase along with the increase of gas pedal 25 operational tons, when gas pedal 25 is in maximum mode of operation, be " 100% ".
In the aforesaid wheel loader, because gas pedal 25 open degree of gas pedal 25 open degree when extinguishing electricity-saving lamp 32 when increasing gas pedal 25 operating physical forces are identical, the operating physical force increase of gas pedal 25 when therefore extinguishing electricity-saving lamp 32.Therefore, in this wheel loader, can urge the driver to carry out energy-conservation driving by two aspects of vision and throttle operation sensation.
In addition, in above-mentioned other embodiment (2), the open degree of selecting dynamic mode and gas pedal 25 shows electricity-saving lamps at display part 26 during less than the specified standard open degree, though but whether select dynamic mode, also can judge whether to show electricity-saving lamp by the open degree of gas pedal 25.
[utilizability on the industry]
The present invention has and more easily judges whether to carry out energy-saving driving and urge the driver to carry out energy-saving driving Effect, be applicable to wheel loader.

Claims (12)

1, a kind of wheel loader, it comprises:
Motor;
The working rig oil pressure pump is driven by the power output of described motor;
Working rig is driven from the pressure oil of described working rig with the oil pressure pump discharging;
Driver's cabin is provided with by the throttle of driver's operation and shows the display part of various information;
Throttle open degree test section detects the open degree of described throttle;
Engine control portion by carry out the full speed control of speed governing in the roughly full revolution zone of described motor, controls engine revolution accordingly with the open degree of described throttle;
The engine revolution test section detects the actual revolution of described motor;
Whether display control unit satisfies the energy-conservation riving condition of stipulating according to the open degree of described throttle and the actual revolution of described motor, judges whether to show that to display part the energy-conservation driving prompting that is used to point out the driver to carry out energy-conservation driving shows.
2, wheel loader according to claim 1 is characterized in that:
Described energy-conservation driving prompting shows it is to be used to represent that ongoing driving is the energy-conservation driving sign of energy-conservation driving;
Described display control unit is arranged to, and when the actual revolution of the open degree of described throttle and described motor satisfies described energy-conservation riving condition, shows described energy-conservation driving sign at described display part; When the actual revolution of the open degree of described throttle and described motor does not satisfy described energy-conservation riving condition, then do not show described energy-conservation driving sign at described display part.
3, wheel loader according to claim 2 is characterized in that:
Also be provided with selection portion in the described driver's cabin, be used for selecting the desired work pattern of drivers less than described first work pattern and the second low work pattern of fuel consumption at interior a plurality of work patterns from first work pattern and the power output that comprises motor;
Described display control unit is configured to, and when the actual revolution of the open degree of selecting described first work pattern and described throttle and described motor satisfies described energy-conservation riving condition, then shows described energy-conservation driving sign at described display part; And when the actual revolution of the open degree of selecting described first work pattern and described throttle and described motor does not satisfy described energy-conservation riving condition, then do not show described energy-conservation driving sign at described display part.
4, wheel loader according to claim 3 is characterized in that:
Described energy-conservation riving condition is meant, can make the described throttle open degree in the engine output scope of engine output in second work pattern and the actual revolution of described motor.
5, a kind of wheel loader, it comprises:
Motor;
The working rig oil pressure pump is driven by the power output of described motor;
Working rig is driven from the pressure oil of described working rig with the oil pressure pump discharging;
Driver's cabin, be provided with the throttle operated by the driver, show various information display part, be used for selecting at interior a plurality of work patterns less than first work pattern and the second low work pattern of fuel consumption the selection portion of the desired work pattern of drivers from first work pattern and the power output that comprises motor;
Throttle open degree test section detects the open degree of described throttle;
Engine control portion by carry out the full speed control of speed governing in the roughly full revolution zone of described motor, controls engine revolution accordingly with the open degree of described throttle;
Whether display control unit when selecting described first work pattern,, judges whether to show that to display part the energy-conservation driving prompting that is used to point out the driver to carry out energy-conservation driving shows less than the specified standard open degree according to the open degree of described throttle.
6, wheel loader according to claim 5 is characterized in that:
Energy-conservation driving prompting shows it is to be used to represent that ongoing driving is the energy-conservation driving sign of energy-conservation driving;
Described display control unit is configured to, and when the open degree of selecting described first work pattern and described throttle during less than the specified standard open degree, then shows energy-conservation driving sign at described display part; And when the open degree of selecting described first work pattern and described throttle surpasses the specified standard open degree, then do not show energy-conservation driving sign at described display part.
7, according to any described wheel loader in the claim 1 to 6, it is characterized in that:
Described display control unit is configured to, and when described working rig uses the pump pressure of oil pressure pump to surpass the first standard pump pressure of regulation, does not then show energy-conservation driving sign at described display part.
8, according to any described wheel loader in the claim 1 to 6, it is characterized in that:
Also comprise:
Turn to and use oil pressure pump, it is driven by the power output of described motor;
Steering cylinder is turned to the pressure oil with the oil pressure pump discharging to drive from described;
Wherein, described display control unit is configured to, and turns to when surpassing the second standard pump pressure of regulation with the pump pressure of oil pressure pump when described, does not show energy-conservation driving sign at described display part.
9, wheel loader according to claim 1 is characterized in that:
Described energy-conservation driving prompting shows it is to be used to represent that ongoing driving is the non-energy-conservation driving sign of the high driving of fuel consumption;
Described display control unit is configured to, and when the actual revolution of the open degree of described throttle and described motor does not satisfy described energy-conservation riving condition, then shows described non-energy-conservation driving sign at described display part; And when the actual revolution of the open degree of described throttle and described motor satisfies described energy-conservation riving condition, then do not show described non-energy-conservation driving sign at described display part.
10, wheel loader according to claim 5 is characterized in that:
Described energy-conservation driving prompting shows it is to be used to represent that ongoing driving is the non-energy-conservation driving sign of the high driving of fuel consumption;
Described display control unit is configured to, and when the open degree of selecting described first work pattern and described throttle surpasses the specified standard open degree, then shows described non-energy-conservation driving sign at described display part; And, then do not show described non-energy-conservation driving sign at described display part when the open degree of selecting described first work pattern and described throttle during less than the specified standard open degree.
11, wheel loader according to claim 5 is characterized in that:
Also comprise operating physical force increase portion, when the open degree of described throttle surpasses described standard open degree, the operating physical force of described throttle is increased.
12, a kind of wheel loader, it comprises:
Motor;
The working rig oil pressure pump is driven by the power output of described motor;
Working rig is driven from the pressure oil of described working rig with the oil pressure pump discharging;
Driver's cabin is provided with by the throttle of driver's operation, the display part of the various information of demonstration;
Throttle open degree test section detects the open degree of described throttle;
Engine control portion by carry out the full speed control of speed governing in the roughly full revolution zone of described motor, controls engine revolution accordingly with the open degree of described throttle;
Whether display control unit, judges whether to show that to described display part the energy-conservation driving prompting that is used to point out the driver to carry out energy-conservation driving shows less than the specified standard open degree according to the open degree of described throttle;
Operating physical force increase portion when the open degree of described throttle surpasses described standard open degree, increases the operating physical force of described throttle.
CN2006800424962A 2005-12-21 2006-12-11 Wheel loader Expired - Fee Related CN101310081B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP368462/2005 2005-12-21
JP2005368462 2005-12-21
PCT/JP2006/324689 WO2007072701A1 (en) 2005-12-21 2006-12-11 Wheel loader

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CN101310081A true CN101310081A (en) 2008-11-19
CN101310081B CN101310081B (en) 2011-12-07

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CN (1) CN101310081B (en)
WO (1) WO2007072701A1 (en)

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JP4892491B2 (en) 2012-03-07
JPWO2007072701A1 (en) 2009-05-28
JP2011190680A (en) 2011-09-29
CN101310081B (en) 2011-12-07
JP5285745B2 (en) 2013-09-11

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