CN112727613A - Lawn mower and control method thereof - Google Patents
Lawn mower and control method thereof Download PDFInfo
- Publication number
- CN112727613A CN112727613A CN202011610607.3A CN202011610607A CN112727613A CN 112727613 A CN112727613 A CN 112727613A CN 202011610607 A CN202011610607 A CN 202011610607A CN 112727613 A CN112727613 A CN 112727613A
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- Prior art keywords
- engine
- speed
- rotating speed
- lawn mower
- preset
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 244000025254 Cannabis sativa Species 0.000 claims description 12
- 238000012423 maintenance Methods 0.000 claims description 12
- 239000010705 motor oil Substances 0.000 claims description 12
- 239000000295 fuel oil Substances 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/002—Electric control of rotation speed controlling air supply
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D34/00—Mowers; Mowing apparatus of harvesters
- A01D34/006—Control or measuring arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating or supervising devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/002—Electric control of rotation speed controlling air supply
- F02D31/003—Electric control of rotation speed controlling air supply for idle speed control
Abstract
The invention discloses a lawn mower and a control method thereof, belonging to the technical field of lawn mower control, wherein the control method comprises the following steps: acquiring the working state of an engine of the lawn mower; adjusting the rotating speed of the engine according to the working state, and adjusting the position of a throttle valve of a carburetor to reduce the rotating speed of the engine to an idle speed range when the engine is in an idle speed state; when the load state, collecting the rotating speed of the engine, and judging whether the rotating speed of the engine is less than a preset lowest rotating speed: if the engine speed is lower than the preset minimum speed, adjusting the position of a throttle valve of the carburetor to enable the engine speed to be higher than the preset minimum speed; otherwise, the engine speed is not adjusted. The lawn mower and the control method thereof provided by the invention can adjust the rotating speed of the engine according to different working states, thereby obtaining reasonable and effective output power, ensuring the mowing efficiency and effect, reducing oil consumption and reducing noise.
Description
Technical Field
The invention relates to a lawn mower and a control method thereof, belonging to the technical field of lawn mower control.
Background
When the stepping gasoline lawn mower actually mows, the power output actually required by the engine is different due to different actual lawn states.
When the common lawn mower mows densely or highly grass, the load is large, the rotating speed can be reduced due to the power limitation of an engine, the mowing efficiency and the mowing effect are influenced, and the grass discharging/collecting performance is also influenced. Therefore, when a large load is met, the lawn mower needs larger output torque, so that the mowing capacity and the mowing quality are difficult to guarantee in the using process.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a lawn mower and a control method thereof, which can adjust the rotating speed of an engine according to different working states, thereby obtaining reasonable and effective output power, ensuring mowing efficiency and effect, reducing oil consumption and reducing noise.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
in one aspect, the present invention provides a method for controlling a lawn mower, the method comprising the steps of:
acquiring the working state of an engine of the lawn mower;
according to the working state, adjusting the rotating speed of the engine:
when in an idling state, the position of a throttle valve of the carburetor is adjusted to reduce the rotating speed of the engine to be within an idling range;
when the load state, collecting the rotating speed of the engine, and judging whether the rotating speed of the engine is less than a preset lowest rotating speed:
if the engine speed is lower than the preset minimum speed, adjusting the position of a throttle valve of the carburetor to enable the engine speed to be higher than the preset minimum speed; otherwise, the engine speed is not adjusted.
Further, the method comprises the following steps:
and acquiring the accumulated running time of the engine, and sending maintenance reminding information when the accumulated running time reaches a preset time value.
Further, the method for acquiring the accumulated running time of the engine comprises the following steps:
calculating the accumulated running time of the engine by collecting the vibration of the handle when the lawn mower works; or
The accumulated running time of the engine is calculated by collecting an ignition signal of an engine igniter.
Further, the method comprises the following steps:
and collecting the ambient temperature, and displaying and alarming when the ambient temperature exceeds a preset temperature value.
Further, the method comprises the following steps:
and collecting signals of sensors in the fuel tank and/or the engine oil tank, and displaying and alarming when the fuel oil quantity and/or the engine oil quantity exceed preset limit values.
Further, the control method further comprises the following steps:
acquiring the density and/or height of grass on a lawn to be mowed;
and adjusting the engine speed according to the density and/or the height.
In another aspect, the present invention provides a lawn mower comprising the following modules:
the state acquisition module is used for acquiring the working state of the engine of the lawn mower;
the rotating speed adjusting module is used for adjusting the rotating speed of the engine according to the working state;
wherein, the rotating speed adjusting module comprises the following units:
the idling state unit is used for adjusting the position of a throttle valve of the carburetor to reduce the rotation speed of the engine to an idling range in the idling state;
the load state unit is used for collecting the rotating speed of the engine in a load state and judging whether the rotating speed of the engine is less than a preset lowest rotating speed:
if the engine speed is lower than the preset minimum speed, adjusting the position of a throttle valve of the carburetor to enable the engine speed to be higher than the preset minimum speed; otherwise, the engine speed is not adjusted.
Further, the lawn mower further comprises the following modules:
the maintenance reminding module is used for acquiring the accumulated operation time of the engine and sending out maintenance reminding information when the accumulated operation time reaches a preset time value;
the temperature acquisition module is used for acquiring the ambient temperature and displaying and alarming when the ambient temperature exceeds a preset temperature value;
and the oil quantity acquisition module is used for acquiring signals of sensors in the fuel tank and/or the engine oil tank, and displaying and alarming when the fuel oil quantity and/or the engine oil quantity exceed preset limit values.
Further, the maintenance reminding module comprises a time acquisition unit:
the time acquisition unit is used for calculating the accumulated running time of the engine by acquiring the vibration of the handle when the lawn mower works; or the accumulated running time of the engine is calculated by collecting the ignition signal of the engine igniter.
Compared with the prior art, the invention has the following beneficial effects:
the lawn mower and the control method thereof can adjust the rotating speed of the engine according to different working states, thereby obtaining reasonable and effective output power, ensuring mowing efficiency and effect and reducing oil consumption;
the most suitable engine speed and torque output under different working states are realized by adjusting a throttle valve in an engine carburetor;
the engine speed is adjusted by acquiring the grass density and height information on the lawn, so that the proper rotating speed, power and torque output are obtained.
Drawings
Fig. 1 is a schematic control flow diagram of a lawn mower according to an embodiment of the present invention;
FIG. 2 is a block diagram of a lawn mower according to an embodiment of the present invention;
FIG. 3 is a block diagram of a speed adjustment module according to an embodiment of the present invention;
fig. 4 is a block diagram of another lawn mower according to an embodiment of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1
The lawn mower provided by the embodiment of the invention comprises an ignition coil sensor, a control unit (ECU), an electronic control carburetor and a working power supply, wherein the ignition coil sensor is arranged on an engine of the lawn mower; the lowest working rotating speed of the lawn mower is preset in the control unit. The output end of the ignition coil sensor is connected to the trigger signal input end of the control unit, and the electronic control carburetor is connected with the output end of the control unit.
As shown in fig. 1, an embodiment of the present invention provides a method for controlling a lawn mower, including the following steps:
acquiring the working state of an engine of the lawn mower;
and adjusting the rotating speed of the engine according to the working state.
Specifically, the working state of the lawn mower engine comprises an idling state and a load state.
The method for adjusting the rotating speed of the engine comprises the following steps:
when in an idle state, the throttle position of the carburetor is adjusted to bring the engine speed down to within the idle range.
And when the engine is in a load state, acquiring the rotating speed of the engine, and judging whether the rotating speed of the engine is less than a preset lowest rotating speed, wherein the preset lowest rotating speed is set in advance and stored in the control unit.
If the engine speed is lower than the preset minimum speed, adjusting the position of a throttle valve of the carburetor to enable the engine speed to be higher than the preset minimum speed; otherwise, the engine speed is not adjusted.
In this embodiment, the lawn mower usage control method further includes the steps of:
and acquiring the accumulated running time of the engine, and sending maintenance reminding information when the accumulated running time reaches a preset time value. Wherein the preset time value is also set in advance and stored in the control unit.
Specifically, the method for acquiring the accumulated running time of the engine comprises the following steps:
calculating the accumulated running time of the engine by collecting the vibration of the handle when the lawn mower works; or
The accumulated running time of the engine is calculated by collecting an ignition signal of an engine igniter.
In this embodiment, the lawn mower usage control method further includes the steps of:
the environment temperature is collected, when the environment temperature exceeds a preset temperature value, the display and the alarm are carried out, and the modes of displaying in a display screen or carrying out sound early warning and the like can be adopted. The preset temperature value is also set and stored in the control unit in advance.
In this embodiment, the lawn mower usage control method further includes the steps of:
and collecting signals of sensors in the fuel tank and/or the engine oil tank, and displaying and alarming when the fuel oil quantity and/or the engine oil quantity exceed preset limit values. Wherein preset limits are also set in advance and stored in the control unit.
In this embodiment, the lawn mower usage control method further includes the steps of:
acquiring the density and/or height of grass on a lawn to be mowed;
the engine speed is adjusted according to the density and/or height of the grass.
Specifically, the density and/or height of the grass to be adjusted may be preset, and the corresponding rotation speed adjustment may be performed according to the classification of the grass density and/or height, for example, the grass density and/or height may be classified into N classes in a certain order (from high to low), each class corresponding to a corresponding engine rotation speed value, and when the collected grass density and/or height corresponds to one of the N classes, the engine may be adjusted to the corresponding rotation speed value.
When the lawn mower is in idle speed and medium-low load working condition, the rotating speed is basically constant; when high loads are encountered, the speed drops due to exceeding the set power of the engine. The control unit of the invention acquires the rotating speed of the engine in real time through the ignition coil sensor.
When the rotating speed of the engine is detected to be lower than the preset lowest rotating speed, the control unit controls the electronic control carburetor; the stepping motor in the electronic control carburetor controls the position of the throttle valve to realize higher power supply, so that the rotating speed is improved, and the mowing effect is maintained.
Example 2
As shown in fig. 2, an embodiment of the present invention provides a lawn mower, including the following modules:
the state acquisition module is used for acquiring the working state of the lawn mower engine, wherein the working state comprises an idling state and a load state.
And the rotating speed adjusting module is used for adjusting the rotating speed of the engine according to the working state.
In this embodiment, as shown in fig. 3, the rotation speed adjusting module includes the following units:
the idling state unit is used for adjusting the position of a throttle valve of the carburetor to reduce the rotation speed of the engine to an idling range in the idling state;
the load state unit is used for collecting the rotating speed of the engine in a load state and judging whether the rotating speed of the engine is less than a preset lowest rotating speed:
if the engine speed is lower than the preset minimum speed, adjusting the position of a throttle valve of the carburetor to enable the engine speed to be higher than the preset minimum speed; otherwise, the engine speed is not adjusted.
As shown in fig. 4, as an embodiment of the present invention, the lawn mower further includes the following modules:
the maintenance reminding module is used for acquiring the accumulated operation time of the engine and sending out maintenance reminding information when the accumulated operation time reaches a preset time value;
the temperature acquisition module is used for acquiring the ambient temperature and displaying and alarming when the ambient temperature exceeds a preset temperature value;
and the oil quantity acquisition module is used for acquiring signals of sensors in the fuel tank and/or the engine oil tank, and displaying and alarming when the fuel oil quantity and/or the engine oil quantity exceed preset limit values.
In this embodiment, the maintenance reminding module includes a time acquisition unit:
the time acquisition unit is used for calculating the accumulated running time of the engine by acquiring the vibration of the handle when the lawn mower works; or
The accumulated running time of the engine is calculated by collecting an ignition signal of an engine igniter.
In conclusion, the lawn mower and the control method thereof provided by the invention can adjust the rotating speed of the engine according to different working states, thereby obtaining reasonable and effective output power, ensuring the mowing efficiency and effect and reducing oil consumption;
the most suitable engine speed and torque output under different working states are realized by adjusting a throttle valve in an engine carburetor;
the engine speed is adjusted by acquiring the grass density and height information on the lawn, so that the proper rotating speed, power and torque output are obtained.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A method of controlling a lawn mower, the method comprising the steps of:
acquiring the working state of an engine of the lawn mower;
according to the working state, adjusting the rotating speed of the engine:
when in an idling state, the position of a throttle valve of the carburetor is adjusted to reduce the rotating speed of the engine to be within an idling range;
when the load state, collecting the rotating speed of the engine, and judging whether the rotating speed of the engine is less than a preset lowest rotating speed:
if the engine speed is lower than the preset minimum speed, adjusting the position of a throttle valve of the carburetor to enable the engine speed to be higher than the preset minimum speed; otherwise, the engine speed is not adjusted.
2. The control method according to claim 1, characterized in that the method further comprises the steps of:
and acquiring the accumulated running time of the engine, and sending maintenance reminding information when the accumulated running time reaches a preset time value.
3. The control method according to claim 2, wherein the method of obtaining the accumulated operating time of the engine comprises the steps of:
calculating the accumulated running time of the engine by collecting the vibration of the handle when the lawn mower works; or
The accumulated running time of the engine is calculated by collecting an ignition signal of an engine igniter.
4. The control method according to claim 1, characterized in that the method further comprises the steps of:
and collecting the ambient temperature, and displaying and alarming when the ambient temperature exceeds a preset temperature value.
5. The control method according to claim 1, characterized in that the method further comprises the steps of:
and collecting signals of sensors in the fuel tank and/or the engine oil tank, and displaying and alarming when the fuel oil quantity and/or the engine oil quantity exceed preset limit values.
6. The control method according to claim 1, characterized by further comprising the steps of:
acquiring the density and/or height of grass on a lawn to be mowed;
and adjusting the engine speed according to the density and/or the height.
7. A lawn mower, comprising the following modules:
the state acquisition module is used for acquiring the working state of the engine of the lawn mower;
the rotating speed adjusting module is used for adjusting the rotating speed of the engine according to the working state;
wherein, the rotating speed adjusting module comprises the following units:
the idling state unit is used for adjusting the position of a throttle valve of the carburetor to reduce the rotation speed of the engine to an idling range in the idling state;
the load state unit is used for collecting the rotating speed of the engine in a load state and judging whether the rotating speed of the engine is less than a preset lowest rotating speed:
if the engine speed is lower than the preset minimum speed, adjusting the position of a throttle valve of the carburetor to enable the engine speed to be higher than the preset minimum speed; otherwise, the engine speed is not adjusted.
8. The lawn mower of claim 7, further comprising the module:
the maintenance reminding module is used for acquiring the accumulated operation time of the engine and sending out maintenance reminding information when the accumulated operation time reaches a preset time value;
the temperature acquisition module is used for acquiring the ambient temperature and displaying and alarming when the ambient temperature exceeds a preset temperature value;
and the oil quantity acquisition module is used for acquiring signals of sensors in the fuel tank and/or the engine oil tank, and displaying and alarming when the fuel oil quantity and/or the engine oil quantity exceed preset limit values.
9. The lawn mower of claim 7, wherein the maintenance reminder module comprises a time acquisition unit:
the time acquisition unit is used for calculating the accumulated running time of the engine by acquiring the vibration of the handle when the lawn mower works;
or the accumulated running time of the engine is calculated by collecting the ignition signal of the engine igniter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011610607.3A CN112727613A (en) | 2020-12-30 | 2020-12-30 | Lawn mower and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011610607.3A CN112727613A (en) | 2020-12-30 | 2020-12-30 | Lawn mower and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112727613A true CN112727613A (en) | 2021-04-30 |
Family
ID=75611034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011610607.3A Pending CN112727613A (en) | 2020-12-30 | 2020-12-30 | Lawn mower and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112727613A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4354466A (en) * | 1981-06-08 | 1982-10-19 | Eltra Corporation | Idle speed controller |
| US4383506A (en) * | 1979-12-28 | 1983-05-17 | Hitachi, Ltd. | Engine rotation speed control system |
| US20030145825A1 (en) * | 2002-02-04 | 2003-08-07 | Dusan Janic | Idle speed control system |
| JP2007051621A (en) * | 2005-08-19 | 2007-03-01 | Shingu Shoko:Kk | Engine-driven working machine |
| CN103726971A (en) * | 2012-10-11 | 2014-04-16 | 上海裕得实业发展有限公司 | Gasoline engine and method for controlling idle speed stability and high-speed restraint of gasoline engine |
-
2020
- 2020-12-30 CN CN202011610607.3A patent/CN112727613A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4383506A (en) * | 1979-12-28 | 1983-05-17 | Hitachi, Ltd. | Engine rotation speed control system |
| US4354466A (en) * | 1981-06-08 | 1982-10-19 | Eltra Corporation | Idle speed controller |
| US20030145825A1 (en) * | 2002-02-04 | 2003-08-07 | Dusan Janic | Idle speed control system |
| JP2007051621A (en) * | 2005-08-19 | 2007-03-01 | Shingu Shoko:Kk | Engine-driven working machine |
| CN103726971A (en) * | 2012-10-11 | 2014-04-16 | 上海裕得实业发展有限公司 | Gasoline engine and method for controlling idle speed stability and high-speed restraint of gasoline engine |
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Application publication date: 20210430 |