CN110576865B - Safe starting control system and control method for high-horsepower tractor - Google Patents
Safe starting control system and control method for high-horsepower tractor Download PDFInfo
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- CN110576865B CN110576865B CN201910769343.7A CN201910769343A CN110576865B CN 110576865 B CN110576865 B CN 110576865B CN 201910769343 A CN201910769343 A CN 201910769343A CN 110576865 B CN110576865 B CN 110576865B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000003993 interaction Effects 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000007935 neutral effect Effects 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 13
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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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
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- 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
-
- 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
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18027—Drive off, accelerating from standstill
-
- 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
- B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
- B60W50/08—Interaction between the driver and the control system
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Human Computer Interaction (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention relates to a safe starting control system and a safe starting control method for a high-horsepower tractor, and solves the problem that accidents are easily caused due to potential safety hazards in the existing tractor control. The system comprises a human-computer interaction device HID, a body controller BCU, a transmission controller TCU, an engine controller ECU and a safety valve inside a transmission; the human-computer interaction device HID is used for human-computer interaction, and a driver signal is transmitted to the vehicle body controller BCU and the transmission case controller TCU through the human-computer interaction device HID; the TCU detects a signal transmitted by the human-computer interaction equipment HID; the BCU detects a signal transmitted by the HID and transmits the signal to the ECU; the engine controller ECU detects signals transmitted by the BCU of the vehicle body controller, analyzes and judges whether the signals detected by the human-computer interaction equipment HID meet the safe starting condition of the engine; the safety valve is positioned inside the gearbox and arranged on an oil inlet pipeline of an electromagnetic valve of the gear clutch.
Description
Technical Field
The invention relates to the field of tractor control, in particular to a safe starting control system and a control method for a high-horsepower tractor.
Background
In recent years, with the influence of a series of factors such as strong pulling of national agricultural machinery subsidies, increase of income of farmers, serious shortage of rural labor force, agricultural structure adjustment and the like, the domestic demand for high-horsepower tractors is increasing day by day. The strong competition promotes the development of high-horsepower tractors, and also puts higher demands on the safety performance of the tractors, such as starting safety, driving safety, braking safety and the like.
At present, a plurality of tractor products on the domestic tractor market lack an effective safe starting control method and system, and have certain potential safety hazards. If the driver does not operate according to the standard and the tractor is in the gear engaging state at the moment, after the engine is ignited and started, the situation that the vehicle rushes forwards when starting is likely to happen, so that accidents are easy to happen, and great harm is brought to the driver, particularly people beside the agricultural machinery.
Disclosure of Invention
The invention aims to solve the problems that potential safety hazards exist in the existing tractor control and accidents are easily caused, and provides a high-horsepower tractor safe starting control system and a control method.
The technical scheme of the invention is as follows:
a safe starting control system of a high-horsepower tractor comprises a human-computer interaction device HID, a vehicle body controller BCU, a gearbox controller TCU, an engine controller ECU and a safety valve; the human-computer interaction device HID is used for human-computer interaction, and a driver signal is transmitted to the vehicle body controller BCU and the transmission case controller TCU through the human-computer interaction device HID; the transmission controller TCU detects a signal transmitted by the human-computer interaction equipment HID so as to control whether the safety valve works or not; the BCU detects a signal transmitted by the HID and transmits the signal to the ECU; the engine controller ECU detects signals transmitted by the BCU of the vehicle body controller, analyzes and judges whether signals detected by the human-computer interaction device HID meet safe starting conditions of the engine; the safety valve is positioned inside the gearbox and arranged on an oil inlet pipeline of the electromagnetic valve of the gear clutch and used for discharging oil in the electromagnetic valve of the gear clutch.
Further, the human-computer interaction device HID comprises a clutch pedal, a seat switch, a running control rod and a PTO gear knob.
Further, sensors are arranged on the clutch pedal, the seat switch, the running control rod and the PTO gear knob, and signals of the sensors are transmitted to the BCU through a wire harness.
Further, the position signal of the clutch pedal is used as a physical signal and transmitted to the TCU through a hard wire.
Further, the BCU transmits signals transmitted by the HID to the ECU through the CAN line.
Meanwhile, the invention also provides a safe starting control method of the high-horsepower tractor, which comprises the following steps:
1) a tractor key switch is powered on, a driver steps down a clutch pedal when starting an engine, and a Body Control Unit (BCU) carries out signal detection on a human-computer interaction device (HID) on the tractor;
2) the transmission control unit TCU analyzes and judges whether the safe starting condition of the tractor is met, if so, a safety valve inside the transmission is controlled to be opened, and if not, the safety valve is controlled to be closed;
3) an engine control unit ECU analyzes and judges whether a signal detected by a human-computer interaction device HID meets the safe starting condition of the engine; if the judgment result is yes, the engine is allowed to be ignited and started, and if the judgment result is no, the engine is forbidden to be ignited and started;
4) after the engine is ignited and started and the safety valve inside the gearbox is opened, the driver releases the clutch pedal, and the tractor is started safely.
Further, the signals in step 1) include a clutch pedal position signal, a seat switch signal, a travel control lever position signal, and a PTO gear signal.
Further, in step 3), the engine control unit ECU analyzes and judges signals detected by the human-computer interaction device HID, specifically, whether the clutch pedal is fully depressed, the driver is seated, the driving control lever is located at the idle position, and the PTO gear knob is located at the neutral position.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the tractor safe starting control method provided by the invention, a driver is required to fully press the clutch pedal to activate the engine starting enable, so that the power connection between the engine and a transmission system is disconnected when the tractor is started, all clutches in the gearbox are disengaged, and the safety valve in the gearbox is opened, so that the safety and reliability of starting the high-horsepower tractor can be obviously improved, and the safety starting requirement of the high-horsepower tractor is met.
2. In the tractor safety start control system provided by the invention, the safety valve inside the gearbox is opened before the tractor starts, oil in the electromagnetic valves of all gear clutches is discharged, the electromagnetic valves of the gear clutches are supplied with oil after the safety valve is closed, and the tractor is prevented from starting by mistake in a gear engaging state after the engine is ignited and started, so that the phenomenon that the tractor suddenly moves forward after being electrified and ignited is avoided, the potential safety hazard can be effectively eliminated, and the high-horsepower tractor can be started with safety guarantee.
Drawings
FIG. 1 is a flow chart illustrating a method for controlling the safe start of a high-powered tractor according to the present invention;
fig. 2 is a schematic diagram of a safe start control system for a high horsepower tractor according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
A plurality of tractor products on the domestic tractor market at present lack an effective safe starting control method and system, and have certain potential safety hazards. If the driver does not operate according to the standard and the tractor is in the gear engaging state at the moment, accidents are easy to happen after ignition is started, and the tractor and the driver are injured. Based on the problems, the invention provides a safe starting control method and a safe starting control system for a high-horsepower tractor, which require a driver to fully press a clutch pedal to activate the engine starting enable, ensure that the power connection between the engine and a transmission system is disconnected when the tractor is started, disconnect all clutches (such as a gear clutch, a gear ring clutch, a four-wheel drive clutch and a PTO clutch) in a gearbox, open a safety valve in the gearbox, and remarkably improve the starting safety reliability of the high-horsepower tractor; the safety valve is designed in the gearbox, oil in the electromagnetic valves of all gear clutches is discharged before the tractor starts, the problem that the tractor starts when being engaged with the gear after the engine is ignited can be effectively solved, the forward rush of the vehicle is caused, potential safety hazard is eliminated, and the safe start of the high-horsepower tractor is guaranteed.
Fig. 2 is a schematic diagram of a safety start control system of a high-horsepower tractor according to the invention, which includes a human-computer interaction device HID, a body controller BCU, a transmission controller TCU, an engine controller ECU and a safety valve.
The human-computer interaction device HID is used for human-computer interaction, a driver signal is transmitted to the vehicle body controller BCU and the gearbox controller TCU through the human-computer interaction device HID, the driver signal comprises a clutch pedal, a seat switch, a running control rod, a PTO gear knob and the like, and the input devices are respectively provided with corresponding sensors. The driver signal is transmitted to their respective corresponding sensors through the input devices of the clutch pedal, the seat switch, the running control lever and the PTO gear knob, and the sensor signals are transmitted to the BCU through the wire harness, and in addition, the clutch pedal position signal is additionally used as a physical signal and transmitted to the TCU through the hard wire.
The BCU is used for detecting signals transmitted by the HID and transmitting the signals to the ECU. The system is specifically used for detecting a clutch pedal position signal, a seat switch signal, a running control rod position signal and a PTO gear signal transmitted by the HID, converting the sensor signals into CAN signals and transmitting the CAN signals to the engine controller ECU through a CAN line.
The transmission controller TCU is used for detecting signals transmitted by the human-computer interaction device HID and controlling whether a safety valve in the transmission works or not so as to control whether the tractor can safely start or not. Specifically, the method is used for detecting a clutch pedal position signal transmitted by the HID and controlling whether a safety valve in the gearbox works or not according to the physical signal, so that whether the tractor can safely start or not is controlled.
And the engine controller ECU is used for detecting CAN signals transmitted by the BCU, analyzing and judging whether a clutch pedal is fully pressed down, a driver sits, a driving control rod is positioned at an idle position, and a PTO gear knob is positioned at a neutral position, so as to control whether the engine CAN be ignited and started.
The safety valve is located inside the gearbox, is specifically arranged on an oil inlet pipeline of an electromagnetic valve of the gear clutch (from the perspective of an oil way, hydraulic oil firstly passes through the safety valve and then enters the electromagnetic valve of the gear clutch), and is used for unloading oil in all the electromagnetic valves of the gear clutch after a driver completely steps on a clutch pedal, and after the driver releases the clutch pedal, the safety valve is closed, and a main oil way supplies oil to the electromagnetic valve. Like this when keeping off the position solenoid valve of clutch and breaking down or judge that the pressure sensor that keeps off the position breaks down and lead to keeping off the position signal and have wrong, can prevent that the main oil circuit from directly giving the solenoid valve oil supply of keeping off the position clutch, effectively avoid the tractor because of the phenomenon of shifting forward suddenly appears in the starting of putting into gear, this can not only protect tractor and driver safety, can also protect the safety of other peripheral relevant personnel of tractor. After the clutch pedal is released by a driver, the safety valve is closed, and the electromagnetic valve of the gear clutch is supplied with oil, so that the tractor can be started safely.
As shown in fig. 1, based on the above control system, the present invention provides a safe starting control method for a high horsepower tractor, comprising the following steps:
1) after a tractor key switch is powered on, a driver is required to step down a clutch pedal when starting an engine, and a Body Control Unit (BCU) carries out signal detection on Human Interface Devices (HID) on a tractor;
the signals detected by the BCU specifically comprise a clutch pedal position signal, a seat switch signal, a running control lever position signal and a PTO gear signal;
2) a Transmission Control Unit (TCU) analyzes and judges whether the safe starting condition of the tractor is met by completely treading a clutch pedal, so as to Control whether a safety valve in the Transmission works; if the judgment result is yes, controlling a safety valve inside the gearbox to be opened to ensure that the tractor can start safely, and if the judgment result is no, controlling the safety valve to be closed;
3) an Engine Control Unit (ECU) analyzes and judges whether a signal detected by a human-computer interaction device HID meets the safe starting condition of the Engine or not, so as to Control whether the ignition starting of the Engine is enabled or not;
the ECU in the engine control unit analyzes and judges whether a clutch pedal is fully pressed down, a driver sits, a driving control rod is located at an idle position, and a PTO gear knob is located at a neutral position, and if the judgment result is yes, the engine is allowed to be ignited and started; and if the judgment result is negative, prohibiting the ignition starting of the engine.
4) After the engine can be ignited and started and the safety valve in the gearbox is opened, the tractor can be started safely by releasing the clutch pedal by a driver.
Claims (6)
1. A safe starting control method of a high-horsepower tractor is characterized by comprising the following steps: the method is realized based on a safe starting control system of the high-horsepower tractor, wherein the safe starting control system of the high-horsepower tractor comprises human-computer interaction equipment (HID), a vehicle Body Controller (BCU), a gearbox controller (TCU), an Engine Controller (ECU) and a safety valve; the human-computer interaction device HID is used for human-computer interaction, and a driver signal is transmitted to the vehicle body controller BCU and the transmission case controller TCU through the human-computer interaction device HID; the transmission controller TCU detects a signal transmitted by the human-computer interaction equipment HID so as to control whether the safety valve works or not; the BCU detects a signal transmitted by the HID and transmits the signal to the ECU; the engine controller ECU detects signals transmitted by the BCU of the vehicle body controller, analyzes and judges whether signals detected by the human-computer interaction device HID meet safe starting conditions of the engine; the safety valve is positioned in the gearbox, arranged on an oil inlet pipeline of the electromagnetic valve of the gear clutch and used for discharging oil in the electromagnetic valve of the gear clutch;
the method comprises the following steps:
1) a tractor key switch is powered on, a driver steps down a clutch pedal when starting an engine, and a body controller BCU (body control unit) detects a signal of a human-computer interaction device HID (human interface device) on the tractor;
2) the TCU analyzes and judges whether a clutch pedal is completely stepped, if so, a safety valve in the gearbox is controlled to be opened, and if not, the safety valve is controlled to be closed;
3) an engine controller ECU analyzes and judges whether a signal detected by a human-computer interaction device HID meets the safe starting condition of the engine; if the judgment result is yes, the engine is allowed to be ignited and started, and if the judgment result is no, the engine is forbidden to be ignited and started;
4) after the engine is ignited and started and the safety valve inside the gearbox is opened, the driver releases the clutch pedal, and the tractor is started safely.
2. The safe start control method of a high-horsepower tractor according to claim 1, wherein: the human-computer interaction equipment HID comprises a clutch pedal, a seat switch, a running control rod and a PTO gear knob; the signals in the step 1) comprise a clutch pedal position signal, a seat switch signal, a running control lever position signal and a PTO gear signal.
3. The safe start control method of a high-horsepower tractor according to claim 2, wherein: in step 3), the engine controller ECU analyzes and judges signals detected by the human-computer interaction device HID, specifically, whether a clutch pedal is fully stepped on, whether a driver sits, whether a driving control rod is located at an idle position, and whether a PTO gear knob is located at a neutral position.
4. The safe start control method of a high-horsepower tractor according to claim 3, wherein: sensors are arranged on the clutch pedal, the seat switch, the running control rod and the PTO gear knob, and signals of the sensors are transmitted to the BCU through a wire harness.
5. The safe start control method of a high-horsepower tractor according to claim 4, wherein: the position signal of the clutch pedal is used as a physical signal and is transmitted to a Transmission Control Unit (TCU) through a hard wire.
6. The safe starting control method of a high horsepower tractor according to any one of claims 1 to 5, wherein: and the BCU transmits a signal transmitted by the HID to the ECU through a CAN line.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910769343.7A CN110576865B (en) | 2019-08-20 | 2019-08-20 | Safe starting control system and control method for high-horsepower tractor |
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| CN201910769343.7A CN110576865B (en) | 2019-08-20 | 2019-08-20 | Safe starting control system and control method for high-horsepower tractor |
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| CN110576865A CN110576865A (en) | 2019-12-17 |
| CN110576865B true CN110576865B (en) | 2021-06-22 |
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| CN113377083B (en) * | 2021-06-16 | 2022-08-26 | 洛阳拖拉机研究所有限公司 | High-reliability tractor safety control device and control method |
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| CN102230533A (en) * | 2011-04-22 | 2011-11-02 | 安徽江淮汽车股份有限公司 | Hydraulic control system for dual-clutch automatic transmission |
| CN105240422A (en) * | 2015-11-16 | 2016-01-13 | 安徽江淮汽车股份有限公司 | Hydraulic control system of clutch |
| CN106240362A (en) * | 2016-08-03 | 2016-12-21 | 重庆长安汽车股份有限公司 | A kind of automobile start control system and control method |
| CN106740103A (en) * | 2016-12-29 | 2017-05-31 | 雷沃重工股份有限公司 | A kind of tractor safety starting control method and control system |
| CN107588188A (en) * | 2016-07-08 | 2018-01-16 | 广州汽车集团股份有限公司 | The hydraulic gear-shifting control system of double-clutch automatic gearbox |
| WO2019070662A1 (en) * | 2017-10-02 | 2019-04-11 | Walbro Llc | Multi-function engine control and input system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201630015U (en) * | 2010-03-26 | 2010-11-17 | 山东宁联机械制造有限公司 | Hydrodynamic drive four-wheel drive travelling corn combine harvester |
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2019
- 2019-08-20 CN CN201910769343.7A patent/CN110576865B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230533A (en) * | 2011-04-22 | 2011-11-02 | 安徽江淮汽车股份有限公司 | Hydraulic control system for dual-clutch automatic transmission |
| CN105240422A (en) * | 2015-11-16 | 2016-01-13 | 安徽江淮汽车股份有限公司 | Hydraulic control system of clutch |
| CN107588188A (en) * | 2016-07-08 | 2018-01-16 | 广州汽车集团股份有限公司 | The hydraulic gear-shifting control system of double-clutch automatic gearbox |
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| CN106740103A (en) * | 2016-12-29 | 2017-05-31 | 雷沃重工股份有限公司 | A kind of tractor safety starting control method and control system |
| WO2019070662A1 (en) * | 2017-10-02 | 2019-04-11 | Walbro Llc | Multi-function engine control and input system |
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| CN110576865A (en) | 2019-12-17 |
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