CN104074615A - Method for preventing engine spontaneous combustion - Google Patents
Method for preventing engine spontaneous combustion Download PDFInfo
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- CN104074615A CN104074615A CN201310104044.4A CN201310104044A CN104074615A CN 104074615 A CN104074615 A CN 104074615A CN 201310104044 A CN201310104044 A CN 201310104044A CN 104074615 A CN104074615 A CN 104074615A
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Abstract
The invention provides a method for preventing engine spontaneous combustion. The method includes the steps of detecting whether an engine is in a running state or not; judging whether state parameters of a vehicle meet preset conditions or not; and doing on-off control of refueling the engine if the state parameters of the vehicle meet the preset conditions. According to an embodiment, by the on-off control of refueling the engine, high-temperature spontaneous combustion, caused by maloperation of the engine, is overcome, and safety of the engine and the vehicle is improved.
Description
Technical field
The invention belongs to automatic control technology field, particularly a kind of method that prevents engine auto-ignition.
Background technique
The reason of self-burning of vehicle is a lot, as the motor of car power source, it is the core area of car load, also be the area occurred frequently of incidents of spontaneous combustion, in Vehicle Driving Cycle, repeatedly there is sudden illness or the abnormal situation of driver's oneself state such as drunk in driver, now there will be original place to step on the gas and cause motor heating too much, ternary catalyzing unit burns, and then has caused car crash.The conventional fuel vehicle that circulation is in the market provided with mechanical throttle valve does not all have the safety measure for above-mentioned situation, and driver's lives and properties have been caused to great potential safety hazard.Because mechanical throttle valve control is determined by driver intention completely, this just may cause affecting as driver is subject to accidental force factor, and misoperation gas pedal causes motor to enter a kind of dangerous running state.
Summary of the invention
For solving the problem that causes motor heating too much easily to be burnt due to driver's misoperation at present, the invention provides a kind of method that prevents engine auto-ignition, improve the Security of motor operation.
The present invention is achieved through the following technical solutions:
A method that prevents engine auto-ignition, step is as follows:
Whether detect motor in running state;
Whether the status parameter that judges described vehicle meets predetermined condition; And
If the status parameter of described vehicle meets described predetermined condition, motor is carried out to interrupted oil and control.
Further, described predetermined condition comprises:
(1) rotating speed of described motor exceedes calibration value;
(2) coolant temperature of described motor exceedes calibration value;
(3) throttle opening of described motor exceedes calibration value; And
(4) gear of vehicle is neutral.
Further, the step that whether the described status parameter that judges described vehicle meets predetermined condition comprises: whether the rotating speed that judges described motor exceedes calibration value;
If it is continue to judge whether the coolant temperature of described motor exceedes calibration value;
If it is continue to judge whether the throttle opening in described motor exceedes calibration value;
If it is continue to judge whether the gearbox of vehicle is neutral; And
If the gearbox of described vehicle in neutral position state, judges that the status parameter of described vehicle meets predetermined condition.
Preferably, described predetermined condition also comprises: the speed of a motor vehicle of vehicle is less than predetermined value.
Further, the step that whether the described status parameter that judges described vehicle meets predetermined condition comprises:
Whether the rotating speed that judges described motor exceedes calibration value;
If it is continue to judge whether the coolant temperature of described motor exceedes calibration value;
If it is continue to judge whether the throttle opening in described motor exceedes calibration value;
If it is continue to judge whether the speed of a motor vehicle of vehicle is less than predetermined value;
If it is continue to judge whether the gearbox of vehicle is neutral; And
If the gearbox of described vehicle in neutral position state, judges that the status parameter of described vehicle meets predetermined condition.
Preferably, described predetermined condition also comprises: detect the signal of the temperature transducer of engine coolant temperature, detect the signal of the displacement transducer of throttle opening, vehicle speed signal and gear signal are all without abnormal.
Further, the step that whether the described status parameter that judges described vehicle meets predetermined condition comprises:
Whether the rotating speed that judges described motor exceedes calibration value;
If it is continue to judge whether the coolant temperature of described motor exceedes calibration value;
If it is continue to judge whether the throttle opening in described motor exceedes calibration value;
If it is continue to judge whether the speed of a motor vehicle of vehicle is less than predetermined value;
If it is continue to judge whether the gearbox of vehicle is neutral;
If it is the signal of the displacement transducer of the signal of the temperature transducer of continuation judgement detection engine coolant temperature, detection throttle opening, whether vehicle speed signal and gear signal be abnormal; And
If the signal of the displacement transducer of the signal of the temperature transducer of described detection engine coolant temperature, detection throttle opening, vehicle speed signal and gear signal are normal, judge that the status parameter of described vehicle meets predetermined condition.Preferably, the step that whether the described status parameter that judges described vehicle meets predetermined condition also comprises: described vehicle is in running state and continue for some time.
Further, described method is further comprising the steps of:
Described motor enters after interrupted oily state of a control, is arranged on displacement transducer moment on vehicle accelerator pedal to detect the whether state in being operated of described gas pedal;
If described gas pedal is the state in being operated not, exit interrupted oily state of a control; If the state of described gas pedal in being operated, maintains interrupted oily state of a control.
Further, motor being carried out to the interrupted oily step of controlling comprises:
Enter oil-break operating mode, progressively increase oil-break;
Judge whether the rotating speed of described motor drops to the rotating speed lower limit of setting;
If the rotating speed of described motor drops to the rotating speed lower limit of setting, enter continuous oily operating mode, gradually reduce oil-break;
Judge whether the rotating speed of described motor rises to the rotating speed CLV ceiling limit value of setting;
If the rise of rotational speed of described motor, to the rotating speed CLV ceiling limit value arranging, enters oil-break operating mode, progressively increase oil-break.
Preferably, described interrupted oil is controlled and is comprised: the intermittent interrupted oil of single cylinder is controlled and the interrupted oil of part cylinder is controlled.
Preferably, describedly motor carried out to the step that interrupted oil controls also comprise:
If the rotating speed of described motor does not drop to the rotating speed lower limit of setting, maintain oil-break operating mode.
Preferably, describedly motor carried out to the step that interrupted oil controls also comprise:
If the rotating speed of described motor does not rise to the rotating speed CLV ceiling limit value of setting, maintain continuous oily operating mode.
The present invention has the following advantages: this prevents the method for engine auto-ignition, whether conform to a predetermined condition by the status parameter that judges vehicle, motor is carried out to interrupted oil and control the heating value that reduces motor, thereby remove the excessive problem that causes excess Temperature that motor is easily burnt of motor heating with this, thereby eliminate the spontaneous combustion risk of vehicle under special operation condition, improved the safety coefficient of vehicle drive.
Brief description of the drawings
Fig. 1 is the flow chart of the method that prevents engine auto-ignition of an embodiment of the present invention.
Fig. 2 is the schematic flow sheet that in the method that prevents engine auto-ignition of an embodiment of the present invention, whether the status parameter of vehicle meets predetermined condition.
Fig. 3 is the schematic flow sheet that in the another kind of embodiment's of the present invention the method that prevents engine auto-ignition, whether the status parameter of vehicle meets predetermined condition.
Fig. 4 is the schematic flow sheet that in another embodiment's of the present invention the method that prevents engine auto-ignition, whether the status parameter of vehicle meets predetermined condition.
Fig. 5 is the schematic flow sheet that in the method that prevents engine auto-ignition of an embodiment of the present invention, motor is carried out to interrupted oil control.
Embodiment
In order to make technical problem solved by the invention, technological scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Below in conjunction with accompanying drawing, the present invention is done to further detailed description: when writing various piece above, the advantage that certain part is brought can be described.
Below in conjunction with accompanying drawing 1-5, first the method that prevents engine auto-ignition according to the embodiment of the present invention is described.
With reference to figure 1, according to the method that prevents engine auto-ignition, comprise the steps:
Whether step S100, detect motor in running state.In one embodiment of the invention, motor is divided into running state or halted state.
Step S200, judges whether the status parameter of described vehicle meets predetermined condition.
Step S300, if the status parameter of described vehicle meets described predetermined condition, carries out interrupted oil to motor and controls.
It should be noted that at this, according to the method that prevents engine auto-ignition of the embodiment of the present invention, by whether detecting motor in operating conditions, and pass through at motor under the condition in operating conditions, detect each status parameter of motor by sensor, can recognize that if the status parameter of vehicle meets predetermined condition, motor enters interrupted oily state of a control when whether the motor in vehicle in front is in being applicable to interrupted oily state of a control.
It should be noted that at this, described predetermined condition is the operating conditions that can motor enter interrupted oil control operating mode.
As shown in Figure 2, now current under running state when motor, detect the status parameter of required vehicle, judge whether the status parameter of described vehicle meets described predetermined condition.
In concrete enforcement, predetermined condition comprises: the rotating speed of (1) described motor exceedes calibration value; (2) the cooling water water temperature of described motor exceedes calibration value; (3) throttle opening of described motor exceedes calibration value; And the gear of (4) vehicle is neutral.
With reference to figure 2, step S200 judges that the step whether status parameter of described vehicle meets predetermined condition comprises:
S201: whether the rotating speed that judges described motor exceedes calibration value;
S202: if it is continue to judge whether the cooling water temperature of described motor exceedes calibration value;
S203: if it is continue to judge whether the throttle opening in described motor exceedes calibration value;
S204: if it is continue to judge whether the gearbox of vehicle is neutral;
If the gearbox of described vehicle in neutral position state, judges that the status parameter of described vehicle meets predetermined condition.
If above-mentioned steps does not meet, judge that the status parameter of described motor does not meet predetermined condition.
It should be noted that at this, the status parameter of vehicle need meet all described predetermined conditions simultaneously just to carry out interrupted oil to motor and controls, and can avoid vehicle to occur erroneous judgement and enters the situation of interrupted oily operating mode, greatly increases the safety protection to vehicle.
In concrete enforcement, described predetermined condition also comprises: the speed of a motor vehicle of vehicle is less than predetermined value.
It should be noted that at this, the speed of a motor vehicle of vehicle is less than predetermined value and comprises the state of vehicle in parking when vehicle does not have the speed of a motor vehicle, and the situation of indicating oven temp. of engine very easily appears in the cooling windward in not driving when parking.
As shown in Figure 3, in concrete enforcement, the step whether described status parameter that judges described vehicle meets predetermined condition comprises:
S201: whether the rotating speed that judges described motor exceedes calibration value;
S202: if it is continue to judge whether the coolant temperature of described motor exceedes calibration value;
S203: if it is continue to judge whether the throttle opening in described motor exceedes calibration value;
S204: if it is continue to judge whether the speed of a motor vehicle of vehicle is less than predetermined value;
S205: if it is continue to judge whether the gearbox of vehicle is neutral; And
If the gearbox of described vehicle in neutral position state, judges that the status parameter of described vehicle meets predetermined condition.
In concrete enforcement, described predetermined condition also comprises: detect the signal of the temperature transducer of engine coolant temperature, detect the signal of the displacement transducer of throttle opening, vehicle speed signal and gear signal are all without abnormal.
It should be noted that at this, detect the displacement transducer that can be of throttle opening, detect the signal emitter that can be of vehicle speed signal and gear signal.
It should be noted that at this, the signal value that detects temperature transducer, the displacement transducer of detection throttle opening and the signal emitter of detection vehicle speed signal and gear signal of vehicle engine coolant has or not extremely, in order to get rid of the abnormal situation that causes the state to vehicle that may occur to occur erroneous judgement due to sensor or other signal detection components, further improved the safety coefficient of vehicle, the risk that vehicle is entered by mistake to interrupted oily operating mode reduces greatly.
As shown in Figure 4, in concrete enforcement, the step whether status parameter that judges described vehicle meets predetermined condition comprises:
S201: whether the rotating speed that judges described motor exceedes calibration value;
S202: if it is continue to judge whether the coolant temperature of described motor exceedes calibration value;
S203: if it is continue to judge whether the throttle opening in described motor exceedes calibration value;
S204: if it is continue to judge whether the speed of a motor vehicle of vehicle is less than predetermined value;
S205: if it is continue to judge whether the gearbox of vehicle is neutral;
S206: the if it is signal of the displacement transducer of the signal of the temperature transducer of continuation judgement detection engine coolant temperature, detection throttle opening, whether vehicle speed signal and gear signal be abnormal; And
If the signal of the displacement transducer of the signal of the temperature transducer of described detection engine coolant temperature, detection throttle opening, vehicle speed signal and gear signal are normal, judge that the status parameter of described vehicle meets predetermined condition.
In concrete enforcement, the step whether described status parameter that judges described vehicle meets predetermined condition also comprises: described vehicle is in running state and continue for some time.
It should be noted that at this, according to vehicle in this running state and continue for some time for fear of occur erroneous judgement situation, increased the Security of vehicle drive simultaneously.
In concrete enforcement, described motor enters after interrupted oily state of a control, is arranged on displacement transducer moment on vehicle accelerator pedal to detect the whether state in being operated of described gas pedal;
If described gas pedal is the state in being operated not, exit interrupted oily state of a control; If the state of described gas pedal in being operated, maintains interrupted oily state of a control.
It should be noted that at this, when entering after interrupted oily state of a control, be arranged on pedal the displacement transducer moment detect pedal whether step on, if pedal step on; the interrupted oily state of a control of system held, if detect that pedal unclamps, exit interrupted oily state of a control, get back to idling mode.
With reference to figure 5, if the status parameter of vehicle meets described predetermined condition, motor is carried out to the interrupted oily step of controlling and comprises:
Step S301: enter oil-break operating mode, progressively increase oil-break;
Step S302: judge whether the rotating speed of described motor drops to the rotating speed lower limit of setting;
Step S303: if the rotating speed of described motor drops to the rotating speed lower limit of setting, enter continuous oily operating mode, gradually reduce oil-break;
Step S304: judge whether the rotating speed of described motor rises to the rotating speed CLV ceiling limit value of setting;
If the rise of rotational speed of described motor, to the rotating speed CLV ceiling limit value arranging, enters oil-break operating mode, progressively increase oil-break.
In concrete enforcement, described interrupted oil is controlled and is comprised: the intermittent interrupted oil of single cylinder is controlled and the interrupted oil of part cylinder is controlled.
Need further illustrate, the interrupted oil of motor single cylinder refers to: the cylinder of motor is divided into each single cylinder, and the oil-break rate of each single cylinder is controlled.Such as: be a% by the oil-break rate control of the A cylinder in motor, be b% by the oil-break rate control of the B cylinder in motor, and the oil-break rate that continues each single cylinder to motor controls, progressively reduce overall oil-break number of times percentage, entirety increases or reduces the oil-break rate of cylinder.
Need further illustrate, the interrupted oil of engine section cylinder refers to: the cylinder of motor is divided into each single cylinder, and the oil-break rate of part single cylinder is controlled, other single cylinder remains unchanged.Such as: by the oil-break rate control of the C cylinder in engine section cylinder be: c%, be d% by the oil-break rate control of the D cylinder in engine section cylinder, and the oil-break rate that continues the part single cylinder to motor is controlled, other cylinders remain unchanged, thereby entirety increases or reduce the oil-break rate of cylinder; Also can the complete oil-break of control section cylinder, all the other cylinders remain unchanged.
It should be noted that, the cylinder body in motor is carried out to interrupted oil control and control by ECM.ECM gathers the signal of each sensor, judges that according to the signal gathering whether described motor is in a high-revolving running state in original place, and the intermittent oil-break of motor single cylinder and two kinds of situations of engine section cylinder oil-break are moved under the control of ECM.Two kinds of the intermittent oil-break of described motor single cylinder and part thick stick oil-breaks are controlled the progressively method of oil-break and can be used in conjunction with, more reasonable to reach interrupted oil, and make the slow downward of rotating speed, fluctuate little, more easily control, and in addition, can prevent the phenomenon of after-burning.
In concrete enforcement, describedly motor is carried out to the step that interrupted oil controls also comprise: if the rotating speed of described motor does not drop to the rotating speed lower limit of setting, maintain oil-break operating mode.
In concrete enforcement, describedly motor is carried out to the step that interrupted oil controls also comprise: if the rotating speed of described motor does not drop to the rotating speed lower limit of setting, maintain oil-break operating mode.
Further it should be noted that, not necessarily specific speed CLV ceiling limit value is little for rotating speed lower limit, and rotating speed CLV ceiling limit value and rotating speed lower limit can be demarcated according to the true running state of motor and vehicle, and rotating speed lower limit can be equal to or slightly less than rotating speed CLV ceiling limit value.
The method that prevents engine auto-ignition of the present invention, can motor under neutral position state the state in the large load of high rotating speed by the interrupted oil processing of mild formula, rotating speed is declined or rises, adjustment of rotational speed is mild and fluctuate littlely, easily controls; Run into driver under the impact of accidental force factor, original place misoperation, tramples throttle and causes motor heating too much, in the situation of easily burning, has eliminated greatly the spontaneous combustion risk of vehicle under special operation condition, has improved the safety coefficient of vehicle drive.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. a method that prevents engine auto-ignition, is characterized in that, comprises the following steps:
Whether detect motor in running state;
Whether the status parameter that judges described vehicle meets predetermined condition; And
If the status parameter of described vehicle meets described predetermined condition, motor is carried out to interrupted oil and control.
2. the method for claim 1, is characterized in that, described predetermined condition comprises:
(1) rotating speed of described motor exceedes calibration value;
(2) coolant temperature of described motor exceedes calibration value;
(3) throttle opening of described motor exceedes calibration value; And
(4) gear of vehicle is neutral.
3. the method for claim 1, is characterized in that, the step whether described status parameter that judges described vehicle meets predetermined condition comprises:
Whether the rotating speed that judges described motor exceedes calibration value;
If it is continue to judge whether the coolant temperature of described motor exceedes calibration value;
If it is continue to judge whether the throttle opening in described motor exceedes calibration value;
If it is continue to judge whether the gearbox of vehicle is neutral; And
If the gearbox of described vehicle in neutral position state, judges that the status parameter of described vehicle meets predetermined condition.
4. method as claimed in claim 2, is characterized in that, described predetermined condition also comprises: the speed of a motor vehicle of vehicle is less than predetermined value.
5. the method for claim 1, is characterized in that, the step whether described status parameter that judges described vehicle meets predetermined condition comprises:
Whether the rotating speed that judges described motor exceedes calibration value;
If it is continue to judge whether the coolant temperature of described motor exceedes calibration value;
If it is continue to judge whether the throttle opening in described motor exceedes calibration value;
If it is continue to judge whether the speed of a motor vehicle of vehicle is less than predetermined value;
If it is continue to judge whether the gearbox of vehicle is neutral; And
If the gearbox of described vehicle in neutral position state, judges that the status parameter of described vehicle meets predetermined condition.
6. method as claimed in claim 4, is characterized in that, described predetermined condition also comprises: detect the signal of the temperature transducer of engine coolant temperature, detect the signal of the displacement transducer of throttle opening, vehicle speed signal and gear signal are all without abnormal.
7. the method for claim 1, is characterized in that, the step whether described status parameter that judges described vehicle meets predetermined condition comprises:
Whether the rotating speed that judges described motor exceedes calibration value;
If it is continue to judge whether the coolant temperature of described motor exceedes calibration value;
If it is continue to judge whether the throttle opening in described motor exceedes calibration value;
If it is continue to judge whether the speed of a motor vehicle of vehicle is less than predetermined value;
If it is continue to judge whether the gearbox of vehicle is neutral;
If it is the signal of the displacement transducer of the signal of the temperature transducer of continuation judgement detection engine coolant temperature, detection throttle opening, whether vehicle speed signal and gear signal be abnormal; And
If the signal of the displacement transducer of the signal of the temperature transducer of described detection engine coolant temperature, detection throttle opening, vehicle speed signal and gear signal are normal, judge that the status parameter of described vehicle meets predetermined condition.
8. the method as described in claim 3 or 5 or 7, is characterized in that, the step whether described status parameter that judges described vehicle meets predetermined condition also comprises: described vehicle is in running state and continue for some time.
9. the method for claim 1, is characterized in that, further comprising the steps of:
Described motor enters after interrupted oily state of a control, is arranged on displacement transducer moment on vehicle accelerator pedal to detect the whether state in being operated of described gas pedal;
If described gas pedal is the state in being operated not, exit interrupted oily state of a control; If the state of described gas pedal in being operated, maintains interrupted oily state of a control.
10. the method for claim 1, is characterized in that, the step of motor being carried out to interrupted oil control comprises:
Enter oil-break operating mode, progressively increase oil-break;
Judge whether the rotating speed of described motor drops to the rotating speed lower limit of setting;
If the rotating speed of described motor drops to the rotating speed lower limit of setting, enter continuous oily operating mode, gradually reduce oil-break;
Judge whether the rotating speed of described motor rises to the rotating speed CLV ceiling limit value of setting;
If the rise of rotational speed of described motor, to the rotating speed CLV ceiling limit value arranging, enters oil-break operating mode, progressively increase oil-break.
11. methods as claimed in claim 10, is characterized in that, described interrupted oil is controlled and comprised: the intermittent interrupted oil of single cylinder is controlled and the interrupted oil of part cylinder is controlled.
12. methods as claimed in claim 10, is characterized in that, describedly motor is carried out to the step that interrupted oil controls also comprise:
If the rotating speed of described motor does not drop to the rotating speed lower limit of setting, maintain oil-break operating mode.
13. methods as claimed in claim 10, is characterized in that, describedly motor is carried out to the step that interrupted oil controls also comprise:
If the rotating speed of described motor does not rise to the rotating speed CLV ceiling limit value of setting, maintain continuous oily operating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104044.4A CN104074615B (en) | 2013-03-28 | 2013-03-28 | A kind of method for preventing engine auto-ignition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104044.4A CN104074615B (en) | 2013-03-28 | 2013-03-28 | A kind of method for preventing engine auto-ignition |
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| Publication Number | Publication Date |
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| CN104074615A true CN104074615A (en) | 2014-10-01 |
| CN104074615B CN104074615B (en) | 2017-07-21 |
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| CN201310104044.4A Active CN104074615B (en) | 2013-03-28 | 2013-03-28 | A kind of method for preventing engine auto-ignition |
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Cited By (1)
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| CN112523887A (en) * | 2020-11-10 | 2021-03-19 | 浙江吉利控股集团有限公司 | Method and system for preventing ablation of engine catalyst and vehicle |
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| CN104074615B (en) | 2017-07-21 |
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