CN108248597B - A kind of hydraulic hybrid power system control method for road sweeper - Google Patents
A kind of hydraulic hybrid power system control method for road sweeper Download PDFInfo
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- CN108248597B CN108248597B CN201810072534.3A CN201810072534A CN108248597B CN 108248597 B CN108248597 B CN 108248597B CN 201810072534 A CN201810072534 A CN 201810072534A CN 108248597 B CN108248597 B CN 108248597B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/02—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to ambient conditions
- B60W40/06—Road conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H1/00—Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
- E01H1/08—Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2300/00—Indexing codes relating to the type of vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/12—Brake pedal position
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mathematical Physics (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
The invention discloses a kind of hydraulic hybrid power system control methods for road sweeper, belong to oil-liquid hybrid electric vehicle control field；The control method can make hydraulic control valve group switch to different operating positions by electronic control unit, realize the switching between hydraulic system Brake energy recovery mode, crawling drive mode, accumulator driving assistant mode and freewheel mode；The control method control flow is simple, and pattern switching rule is clear, is easy to Project Realization；By the control method, improve that existing road sweeper fuel consumption and emission performance is poor, and noise is big, working environment is severe, arrangement is difficult, and manufacturing cost and the high disadvantage of use cost have extensive future in engineering applications.
Description
Technical field
The present invention relates to road sweeper control technology field more particularly to a kind of hydraulic hybrids for road sweeper
Dynamical system control method.
Background technique
Road sweeper is a kind of to integrate the new of road cleaning, garbage reclamation and transport as a kind of sanitation equipment
The efficient cleaning equipment of type.Traditional sweeper is mostly reequiped on special-purpose automobile chassis, and two engines are equipped with.Transition operation
When, sustainer work, assistant engine leaves unused；When cleaning work, major-minor simultaneous firing, sustainer is responsible for vehicle
Mobile, the work of the clearing apparatus such as disk, blower, high-pressure hydraulic pump is swept in assistant engine driving, and speed is lower when due to cleaning work, main hair
Engine load rate is very low, and fuel consumption and emission is very poor, and two simultaneous firings, and noise is very big, building ring
Border is severe.In addition, two engines not only make chassis difficult arrangement, vehicle manufacturing cost and use cost has also been significantly greatly increased.
Increasingly serious recently as energy and environment problem, energy conservation becomes government and enterprises pay attention with new energy technology
Hot spot.Mix-driving and energy-saving technology obtains a degree of popularization, application in road sweeper field, but the prior art is simultaneously
It is not mature enough, perfect.If China Patent Publication No. is CN105346370A, publication date 2016-02-24 discloses a kind of oil
The control method of electricity mixed power sweeping machine power coupler, the patent based on the relationship that is of coupled connections between component, and
Corresponding control method is proposed based on the connection relationship, is not involved with sweeping truck system, prospects for commercial application is limited；Such as China
Patent publication No. is CN105257632A, publication date 2016-01-20, discloses a kind of hydraulic travel system and its controlling party
Method, environmental sanitation are mechanical, and this method realizes the trouble free service of hydraulic system by adjusting power source speed difference, improve road sweeper
Adaptability for working condition and drive safety, but the structural principle and specific job control side of this method and undeclared purging system
Method.
For above situation, it is necessary to for the work characteristics of road sweeper, in conjunction with hybrid power system advantage, design
A kind of method is simple, good reliability hybrid system control method.
Summary of the invention
To solve the shortcomings of the prior art, the present invention provides a kind of hydraulic hybrid system for road sweeper
System control method, the control method can make hydraulic control valve group switch to different operating positions by electronic control unit, real
Between existing hydraulic system Brake energy recovery mode, crawling drive mode, accumulator driving assistant mode and freewheel mode
Switching；Present invention improves existing road sweeper fuel consumption and emission performance is poor, noise is big, working environment is severe, whole
Vehicle difficult arrangement, manufacturing cost and the high disadvantage of use cost, and control method is simple, has extensive future in engineering applications.
The present invention adopts the following technical solutions realization:
To achieve the above object, the present invention provides a kind of hydraulic hybrid power system controlling party for road sweeper
Method, electronic control unit acquisition speed signal, clean switch position signal, grade signal and start brake pedal position signal
Machine tach signal judges driver intention and vehicle running state, to control the unlatching of hydraulic pump module, hydraulic control valve
The revolving speed and electronics gear position of transfer case for controlling valve position, engine of group realize turn of sweeper transition operation and cleaning work
It changes, specifically includes the following steps:
Step 1, acquisition speed signal, clean switch position signal, grade signal and start brake pedal position signal
Machine tach signal；
Step 2, judges whether speed signal is greater than 0, if so, entering step three；Otherwise, ten are entered step；
Step 3 judges whether vehicle is braked according to speed signal, brake pedal position signal, if so, entering step four；
Otherwise, five are entered step；
Step 4, electronic control unit send instruction control electronics transfer gear to neutral gear position, make blower fan apparatus, high pressure water
The power transfer path of pump installation is truncated；Electronic control unit sends the position that instruction adjusts hydraulic control valve group, makes to clean dress
Set control assembly, the truncation of the hydraulic pressure road of hydraulic quantitative motor, the hydraulic pressure road connection of accumulator package；Electronic control unit transmission refers to
Enabling the swashplate angle for adjusting axial inclined disc type high pressure variable pump in hydraulic pump module is maximum, while electronic control unit is to hydraulic
Pump assembly sends instruction, adjusts the oil outlet pressure of axial inclined disc type high pressure variable pump, vehicle is in on-position at this time, hydraulic
System turns on into Brake energy recovery mode, return step two；
Step 5 judges to clean whether switch position signal is open state, if so, entering step six；Otherwise, into step
Rapid nine；
Step 6, electronic control unit send instruction and adjust electronics transfer gear to non-neutral gear position, make the power of engine
Blower fan apparatus and high-pressure water pump device are transmitted to through power takeoff, transfer gear；Electronic control unit sends instruction and adjusts hydraulic control
The position of valve group, makes clearing apparatus control assembly, the connection of the hydraulic pressure road of hydraulic quantitative motor, and the hydraulic pressure road of accumulator package is cut
It is disconnected；Electronic control unit sends to hydraulic pump module and instructs, and adjusts the inclination angle size of axial inclined disc type high pressure variable pump to drive
Hydraulic quantitative motor, vehicle is in cleaning works state at this time, and hydraulic system enters crawling drive mode, return step two；
Step 7 judges whether grade signal is more than sweeper gradient given threshold, if so, entering step eight；Otherwise, it returns
Return step 6；
Step 8, electronic control unit send instruction and adjust electronics transfer gear to non-neutral gear position, make the power of engine
Blower fan apparatus and high-pressure water pump device are transmitted to through power takeoff, transfer gear；Electronic control unit sends instruction and adjusts hydraulic control
The position of valve group is connected to the hydraulic pressure road of clearing apparatus control assembly, hydraulic quantitative motor and accumulator package；Electronic control is single
Member sends instruction to hydraulic pump module, hydraulic control valve group, makes hydraulic quantitative motor output power and accumulator package output work
Rate meets driving power requirement, and vehicle is in cleaning works state at this time, and hydraulic system enters accumulator driving assistant mode, returns
Return step 2；
Step 9, electronic control unit send instruction and adjust electronics transfer gear to neutral gear position, make blower fan apparatus, high pressure water
The power transfer path of pump installation is truncated；Electronic control unit sends the position that instruction adjusts hydraulic control valve group, makes to clean dress
Set control assembly, hydraulic quantitative motor, the truncation of the hydraulic pressure road of accumulator package；Electronic control unit sends instruction and adjusts hydraulic pump
The swashplate angle of axial inclined disc type high pressure variable pump is zero in component, and the oil liquid in hydraulic pump module is output to hydraulic quantitative motor
Shell in, separate its plunger with shell, axial inclined disc type high pressure variable pump and hydraulic quantitative motor are in idling conditions,
Vehicle enters transition working condition, hydraulic system freedom of entry wheel mode, return step two at this time；
Step 10, vehicle are in parked state, tail-off, hydraulic closure system；Terminate.
A kind of hydraulic hybrid power system control method for road sweeper proposed by the invention, when sweeper turns
When the work of field, hydraulic system is in freewheel mode, and transfer gear is placed in neutral gear, engine driving vehicle traveling.When sweeper into
When row cleaning work, hydraulic system is in crawling drive mode, and hydraulic quantitative motor drives vehicle traveling, sweeps the clearing apparatus such as disk
Also it is hydraulically operated, blower fan apparatus and high-pressure water pump device pass through transfer gear and power takeoff and obtain power from engine, work as cleaning
When vehicle encounters the high-power operating conditions such as climbing, hydraulic system enters accumulator driving assistant mode, improves the dynamic property of vehicle.When clear
When sweeping vehicle and entering damped condition, hydraulic system enters Brake energy recovery mode, and it is big that the energy of recycling is used for vehicle climbing etc.
Power operating condition further increases the fuel economy of vehicle.
Compared with prior art the beneficial effects of the present invention are:
(1) a kind of hydraulic hybrid power system control method for road sweeper of the present invention, compared to working as
The method that preceding engineering uses has originality in oil-liquid hybrid electric sweeper field.
(2) a kind of hydraulic hybrid power system control method for road sweeper of the present invention, compared to public affairs
The oil electric mixed dynamic system control method of patent is opened, control flow is simple, is easy to Project Realization.
(3) a kind of hydraulic hybrid power system control method for road sweeper of the present invention, can satisfy
The basic function requirement of sweeper, and compared to traditional road sweeper, fuel economy and use cost etc. significantly improve.
Detailed description of the invention
Fig. 1 is a kind of hydraulic hybrid power system control method operating mode for road sweeper of the present invention
The control method flow chart of switching.
Fig. 2 is that a kind of hydraulic hybrid power system work for road sweeper of the present invention is returned in braking energy
The energy flow route schematic diagram of receipts mode.
Fig. 3 is that a kind of hydraulic hybrid power system work for road sweeper of the present invention drives mould in crawling
The energy flow route schematic diagram of formula.
Fig. 4 is that a kind of hydraulic hybrid power system work for road sweeper of the present invention drives in accumulator
The energy flow route schematic diagram of assistant mode.
Fig. 5 is that a kind of hydraulic hybrid power system for road sweeper of the present invention works in freewheel mode
Energy flow route schematic diagram.
In figure: 1, engine；2, clutch；3, gearbox；4, drive axle；5, rear-wheel；6, power takeoff；7, universal joint；8,
Hydraulic pump module；9, axial inclined disc type high pressure variable pump；10, fuel tank；11, hydraulic control valve group；12, clearing apparatus control group
Part；13, accumulator package；14, hydraulic quantitative motor；15, front-wheel；16, transfer gear；17, blower fan apparatus；18, high-pressure hydraulic pump fills
It sets；19, electronic control unit；
Specific embodiment
The present invention is explained in detail with reference to the accompanying drawing:
A kind of the purpose of hydraulic hybrid power system control method for road sweeper proposed by the present invention is to pass through control
The system is made, the traditional sweeper fuel consumption and emission performance of improvement is poor, and noise is big, working environment is severe, and arrangement is tired
Difficulty, manufacturing cost and the high disadvantage of use cost.
Refering to attached drawing 1, electronic control unit 19 passes through acquisition speed signal, brake pedal position signal, cleaning switch position
Confidence number, grade signal and engine rotational speed signal judge the intention and vehicle running state of driver, to control hydraulic
The unlatching of pump assembly, the control valve position of hydraulic control valve group, engine revolving speed and electronics gear position of transfer case, realize sweeper
The conversion of transition operation and cleaning work, specifically includes the following steps:
Step 1, acquisition speed signal, clean switch position signal, grade signal and start brake pedal position signal
Machine tach signal；
Step 2, judges whether speed signal is greater than 0, if so, entering step three；Otherwise, ten are entered step；
Step 3 judges whether vehicle is braked according to speed signal, brake pedal position signal, if so, entering step four；
Otherwise, five are entered step；
Step 4, electronic control unit 19 send instruction control electronics transfer gear 16 to neutral gear position, make blower fan apparatus 17,
The power transfer path of high-pressure water pump device 18 is truncated；Electronic control unit 19 sends the position that instruction adjusts hydraulic control valve group 11
It sets, makes clearing apparatus control assembly 12, the truncation of the hydraulic pressure road of hydraulic quantitative motor 14, the hydraulic pressure road connection of accumulator package 13；
It is maximum that electronic control unit 19, which sends instruction and adjusts the swashplate angle of axial inclined disc type high pressure variable pump 9 in hydraulic pump module 8,
Electronic control unit 19 sends to hydraulic pump module 8 and instructs simultaneously, adjusts the oil outlet pressure of axial inclined disc type high pressure variable pump 9
Power, vehicle is in on-position at this time, and hydraulic system turns on into Brake energy recovery mode, return step two；
Step 5 judges to clean whether switch position signal is open state, if so, entering step six；Otherwise, into step
Rapid nine；
Step 6, electronic control unit 19 send instruction and adjust electronics transfer gear 16 to non-neutral gear position, make engine 1
Power is transmitted to blower fan apparatus 17 and high-pressure water pump device 18 through power takeoff 6, transfer gear 16；Electronic control unit 19 sends instruction
The position for adjusting hydraulic control valve group 11 makes clearing apparatus control assembly 12, the connection of the hydraulic pressure road of hydraulic quantitative motor 14, accumulation of energy
The hydraulic pressure road of device assembly 13 is truncated；Electronic control unit 19 sends to hydraulic pump module 8 and instructs, and adjusts axial inclined disc type high voltage variable
The inclination angle size of amount pump 9 is to drive hydraulic quantitative motor 14, and vehicle is in cleaning works state at this time, and hydraulic system enters crawling
Drive mode, return step two；
Step 7 judges whether grade signal is more than sweeper gradient given threshold, if so, entering step eight；Otherwise, it returns
Return step 6；
Step 8, electronic control unit 19 send instruction and adjust electronics transfer gear 16 to non-neutral gear position, make engine 1
Power is transmitted to blower fan apparatus 17 and high-pressure water pump device 18 through power takeoff 6, transfer gear 16；Electronic control unit 19 sends instruction
The position for adjusting hydraulic control valve group 11, makes clearing apparatus control assembly 12, hydraulic quantitative motor 14 and accumulator package 13
Hydraulic pressure road connection；Electronic control unit 19 sends instruction to hydraulic pump module 8, hydraulic control valve group 11, makes hydraulic quantitative motor
14 output powers and 13 output power of accumulator package meet driving power requirement, and vehicle is in cleaning works state, liquid at this time
Pressure system enters accumulator driving assistant mode, return step two；
Step 9, electronic control unit 19 send instruction and adjust electronics transfer gear 16 to neutral gear position, make blower fan apparatus 17,
The power transfer path of high-pressure water pump device 18 is truncated；Electronic control unit 19 sends the position that instruction adjusts hydraulic control valve group 11
It sets, makes clearing apparatus control assembly 12, hydraulic quantitative motor 14, the truncation of the hydraulic pressure road of accumulator package 13；Electronic control unit
19 swashplate angles for sending axial inclined disc type high pressure variable pump 9 in instruction adjusting hydraulic pump module 8 are zero, in hydraulic pump module 8
Oil liquid be output in the shell of hydraulic quantitative motor 14, separate its plunger with shell, axial inclined disc type 9 He of high pressure variable pump
Hydraulic quantitative motor 14 is in idling conditions, and vehicle enters transition working condition at this time, hydraulic system freedom of entry wheel mode,
Return step two；
Step 10, vehicle are in parked state, tail-off, hydraulic closure system；Terminate.
Refering to attached drawing 2~5, it is described in detail through the control method, hydraulic system is in Brake energy recovery mode, crawling
When drive mode, accumulator driving assistant mode and freewheel mode, all parts state and energy flow route in system.
Attached drawing 2 is that a kind of hydraulic hybrid power system for road sweeper of the present invention works in braking energy
The energy flow route schematic diagram of take-back model:
When sweeper is in on-position, hydraulic system turns on into Brake energy recovery mode, and power source is at this time
Vehicle kinetic energy from from rear-wheel 5 to front transfer, the component of participation mainly have engine 1, clutch 2, gearbox 3, drive axle 4, after
Wheel 5, power takeoff 6, universal joint 7, hydraulic pump module 8, axial inclined disc type high pressure variable pump 9, fuel tank 10, hydraulic control valve group 11,
Accumulator package 13, electronic control unit 19.The power transmitted from rear-wheel passes through drive axle 4, gearbox 3, clutch 2, starts
Machine 1, power takeoff 6 and universal joint 7 drive the armature spindle of the inclined disc type high pressure variable 9 of axial direction in hydraulic pump module 8 to rotate synchronously,
It is maximum, pump output high pressure oil that electronic control unit 19, which sends instruction and adjusts the swashplate angle of axial inclined disc type high pressure variable pump 9,
Liquid is through hydraulic control valve group 11 into accumulator package 13.The driving torque of axial inclined disc type high pressure variable pump 9 is equal to its driving
The opposing torque of gear, the opposing torque react on engine 1 by power takeoff 6, and engine 1 is not as power source at this time,
But the load as transmission shaft.The opposing torque of the braking moment of engine 1 and axial inclined disc type high pressure variable pump 9, passes through
Clutch 2, gearbox 3, drive axle 4 act on rear-wheel 5, generate braking action to vehicle.
Attached drawing 3 is that a kind of hydraulic hybrid power system work for road sweeper of the present invention drives in crawling
The energy flow route schematic diagram of mode:
When sweeper is in cleaning works state, hydraulic system enters crawling drive mode, and the component of participation mainly has
Engine 1, power takeoff 6, universal joint 7, hydraulic pump module 8, axial inclined disc type high pressure variable pump 9, fuel tank 10, hydraulic control valve group
11, clearing apparatus control assembly 12, hydraulic quantitative motor 14, front-wheel 15, electronics transfer gear 16, blower fan apparatus 17, high-pressure hydraulic pump
Device 18, electronic control unit 19.Clutch 2 disconnects at this time, and gearbox 3 is placed in neutral gear, and a part of power of engine 1 is through taking
Power device 6, universal joint 7, hydraulic pump module 8, axial inclined disc type high pressure variable pump 9, hydraulic control valve group 11 are transferred to hydraulic quantitative
Motor 14, electronic control unit 19 send to hydraulic pump module 8 and instruct, and the inclination angle for adjusting axial inclined disc type high pressure variable pump 9 is big
It is small, so that hydraulic quantitative motor 14 is driven vehicle traveling；Electronic control unit 19 sends to hydraulic control valve group 11 and instructs, and control is clear
The hydraulic valve bank of sweeping device control assembly 12 is opened, and is made to sweep the component actuations such as disk, is carried out cleaning works；Electronic control unit 19 is sent out
Instruction is sent to adjust electronics transfer gear 16 to non-neutral gear position, another part power of engine 1 is through power takeoff 6, electronics transfer gear
16 are transferred to blower fan apparatus 17 and high-pressure water pump device 18, carry out dust suction and watering work.
Attached drawing 4 is that a kind of hydraulic hybrid power system work for road sweeper of the present invention is driven in accumulator
The energy flow route schematic diagram of dynamic assistant mode:
When sweeper, which is in cleaning works state and grade signal, is more than sweeper gradient given threshold, hydraulic system into
Enter accumulator driving assistant mode, the component of participation mainly has engine 1, power takeoff 6, universal joint 7, hydraulic pump module 8, axial direction
It is inclined disc type high pressure variable pump 9, fuel tank 10, hydraulic control valve group 11, clearing apparatus control assembly 12, accumulator package 13, hydraulic
Fixed displacement motor 14, front-wheel 15, electronics transfer gear 16, blower fan apparatus 17, high-pressure water pump device 18, electronic control unit 19.At this time
Clutch 2 disconnects, and gearbox 3 is placed in neutral gear, a part of power of engine 1 through power takeoff 6, universal joint 7, hydraulic pump module 8,
Axial inclined disc type high pressure variable pump 9, hydraulic control valve group 11 are transferred to hydraulic quantitative motor 14, and electronic control unit 19 is to hydraulic
Pump assembly 8 sends instruction, adjusts the inclination angle size of axial inclined disc type high pressure variable pump 9, hydraulic quantitative motor 14 is made to drive vehicle
Traveling；Electronic control unit 19 sends to hydraulic control valve group 11 and instructs, and controls the hydraulic valve bank of clearing apparatus control assembly 12
It opens, makes to sweep the component actuations such as disk, carry out cleaning works；Electronic control unit 19 sends to hydraulic control valve group 11 and instructs, control
The hydraulic valve bank of accumulator package 13 processed is opened, and adds to the high-voltage oil liquid of accumulator in hydraulic system, and vehicle drives at this time
Power is the sum of power and accumulator power of hydraulic quantitative motor 14；Electronic control unit 19 sends instruction and adjusts electronics transfer
Device 16 to non-neutral gear position, another part power of engine 1 is transferred to blower fan apparatus 17 through power takeoff 6, electronics transfer gear 16
With high-pressure water pump device 18, dust suction and watering work are carried out.
Attached drawing 5 is that a kind of hydraulic hybrid power system for road sweeper of the present invention works in free wheel model
The energy flow route schematic diagram of formula:
When vehicle enters transition working condition, hydraulic system freedom of entry wheel mode, the component of participation mainly has engine
1, clutch 2, gearbox 3, drive axle 4, rear-wheel 5, power takeoff 6, universal joint 7, hydraulic pump module 8, axial inclined disc type high voltage variable
Amount pump 9, fuel tank 10, hydraulic control valve group 11, hydraulic quantitative motor 14, electronic control unit 19.Electronic control unit 19 is sent
Instruction adjusts electronics transfer gear 16 to neutral gear position, makes the power transfer path truncation of blower fan apparatus 17, high-pressure water pump device 18；
Electronic control unit 19 sends the position that instruction adjusts hydraulic control valve group 11, makes clearing apparatus control assembly 12, accumulator group
The hydraulic pressure road truncation of part 13, hydraulic quantitative motor 14；Electronic control unit 19 sends instruction and adjusts axial inclined disc type high pressure variable
Pump 9 swashplate angle be zero, the oil liquid in hydraulic pump module 8 is output in the shell of hydraulic quantitative motor 14, make its plunger with
Shell separation, axial inclined disc type high pressure variable pump 9 and hydraulic quantitative motor 14 are in idling conditions；The power of engine 1 passes through
Clutch 2, gearbox 3, drive axle 4 are transferred to rear-wheel 5, driving vehicle traveling.
Claims (1)
1. a kind of hydraulic hybrid power system control method for road sweeper, which is characterized in that specifically include following step
It is rapid:
Step 1, acquisition speed signal, clean switch position signal, grade signal and engine turn at brake pedal position signal
Fast signal；
Step 2, judges whether speed signal is greater than 0, if so, entering step three；Otherwise, ten are entered step；
Step 3 judges whether vehicle is braked according to speed signal, brake pedal position signal, if so, entering step four；It is no
Then, five are entered step；
Step 4, electronic control unit (19) send instruction control electronics transfer gear (16) to neutral gear position, make blower fan apparatus
(17), the power transfer path truncation of high-pressure water pump device (18)；Electronic control unit (19) sends instruction and adjusts hydraulic control
The position of valve group (11) makes clearing apparatus control assembly (12), the truncation of the hydraulic pressure road of hydraulic quantitative motor (14), accumulator package
(13) hydraulic pressure road connection；Electronic control unit (19) sends instruction and adjusts axial inclined disc type high voltage variable in hydraulic pump module (8)
The swashplate angle of amount pump (9) is maximum, while electronic control unit (19) sends to hydraulic pump module (8) and instructs, and is adjusted axial
The oil outlet pressure of inclined disc type high pressure variable pump (9), vehicle is in on-position at this time, and hydraulic system turns on into braking energy
Take-back model, return step two；
Step 5 judges to clean whether switch position signal is open state, if so, entering step six；Otherwise, it enters step
Nine；
Step 6, electronic control unit (19) send instruction and adjust electronics transfer gear (16) to non-neutral gear position, make engine (1)
Power be transmitted to blower fan apparatus (17) and high-pressure water pump device (18) through power takeoff (6), transfer gear (16)；Electronic control unit
(19) position that instruction adjusts hydraulic control valve group (11) is sent, clearing apparatus control assembly (12), hydraulic quantitative motor are made
(14) hydraulic pressure road connection, the hydraulic pressure road truncation of accumulator package (13)；Electronic control unit (19) is sent out to hydraulic pump module (8)
Instruction is sent, adjusts the inclination angle size of axial inclined disc type high pressure variable pump (9) to drive hydraulic quantitative motor (14), at this time at vehicle
In cleaning works state, hydraulic system enters crawling drive mode, return step two；
Step 7 judges whether grade signal is more than sweeper gradient given threshold, if so, entering step eight；Otherwise, step is returned
Rapid six；
Step 8, electronic control unit (19) send instruction and adjust electronics transfer gear (16) to non-neutral gear position, make engine (1)
Power be transmitted to blower fan apparatus (17) and high-pressure water pump device (18) through power takeoff (6), transfer gear (16)；Electronic control unit
(19) position that instruction adjusts hydraulic control valve group (11) is sent, clearing apparatus control assembly (12), hydraulic quantitative motor are made
(14) it is connected to the hydraulic pressure road of accumulator package (13)；Electronic control unit (19) is to hydraulic pump module (8), hydraulic control valve group
(11) instruction is sent, hydraulic quantitative motor (14) output power and accumulator package (13) output power is made to meet driving power and want
It asks, vehicle is in cleaning works state at this time, and hydraulic system enters accumulator driving assistant mode, return step two；
Step 9, electronic control unit (19) send instruction and adjust electronics transfer gear (16) to neutral gear position, make blower fan apparatus
(17), the power transfer path truncation of high-pressure water pump device (18)；Electronic control unit (19) sends instruction and adjusts hydraulic control
The position of valve group (11) makes clearing apparatus control assembly (12), hydraulic quantitative motor (14), the hydraulic pressure road of accumulator package (13)
Truncation；Electronic control unit (19) sends the swash plate that instruction adjusts axial inclined disc type high pressure variable pump (9) in hydraulic pump module (8)
Inclination angle is zero, and the oil liquid in hydraulic pump module (8) is output in the shell of hydraulic quantitative motor (14), makes its plunger and shell point
From axial inclined disc type high pressure variable pump (9) and hydraulic quantitative motor (14) are in idling conditions, and vehicle enters transition work at this time
Make state, hydraulic system freedom of entry wheel mode, return step two；
Step 10, vehicle are in parked state, tail-off, hydraulic closure system；Terminate.
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