CN102345521B - Oil quantity limiting system of automobile - Google Patents
Oil quantity limiting system of automobile Download PDFInfo
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- CN102345521B CN102345521B CN201110213339.6A CN201110213339A CN102345521B CN 102345521 B CN102345521 B CN 102345521B CN 201110213339 A CN201110213339 A CN 201110213339A CN 102345521 B CN102345521 B CN 102345521B
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- 230000001133 acceleration Effects 0.000 claims abstract description 26
- 239000000446 fuel Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Steering Control In Accordance With Driving Conditions (AREA)
- Special Spraying Apparatus (AREA)
Abstract
The invention provides an oil quantity limiting system of an automobile, and belongs to the technical field of automobiles. The system solves the problem that the automobile cannot intelligently control the operation of an oil sprayer in the prior art. The system comprises an automotive electronic control unit (ECU) and an oil sprayer connected with the automotive ECU; the automotive ECU is connected to a controller area network (CAN) bus; the oil quantity limiting system also comprises a pressure sensor for measuring the axial pressing force F of a steering wheel; the pressure sensor is connected with the automotive ECU; and the automotive ECU can be used for comparing an automotive actual parameter signal transmitted by the CAN bus and the axial pressing force F of the steering wheel from the pressure sensor with set values in the ECU and transmitting a control signal to control whether the oil sprayer works. The system can intelligently control opening and closing of the oil sprayer, prevent unintended acceleration of the automobile and ensure driving safety, and is simple and reliable in design.
Description
Technical field
The invention belongs to automobile technical field, particularly relate to a kind of oil quantity limiting system of automobile.
Background technique
Automobile is a kind of traffic tool very easily, and it has become people's means of transportation widely, and increasing family, individual have had automobile.When driving, new hand driver often easily occur to gas pedal and braking pedal step on operation by mistake, easily accidents caused.For fear of the generation of above-mentioned event, someone has designed a kind of vehicle steering wheel that can control throttle.
The patent of invention that the notification number of authorizing as State Intellectual Property Office of the People's Republic of China is CN201254101Y: a kind of vehicle steering wheel, by high oil mass hand push button, steering wheel disk, low fuel-flow control spring, low oil mass hand push button, low fuel-flow control contact disk, low oil mass wire, low oil mass door controller, high oil mass door controller, high oil mass wire, high fuel-flow control spring, square plate disk connecting rod, high fuel-flow control contact disk forms, high oil mass hand push button and low oil mass hand push button are left in steering wheel disk connecting rod limit on steering wheel disk, above-mentioned hand push button connects corresponding control spring and controls contact disk, above-mentioned control contact disk connects corresponding wire and connects by the closed circuit circuit reaching in throttle control of corresponding throttle control formation wire, make operation of oil pump.
Although above-mentioned scheme has avoided reason foot control liquefaction door to cause the generation of the phenomenon of mis-accelerator pressing, but automobile still there is following problem: when need to brake, driver's nervous system is often more excited, under this state, driver is easily nervous, therefore, driver can not well judge the accurate location of high oil mass hand push button and low oil mass hand push button, causes pushing the wrong button, does not reach such scheme expected effect.
Summary of the invention
The object of the invention is for the existing the problems referred to above of prior art, and the oil quantity limiting system of a kind of automobile proposing, this system can gather the actual parameter signal of automobile the state of automatic decision automobile and oil mass demand, and whether controls oil sprayer work.
Object of the present invention can realize by following technical proposal: a kind of oil quantity limiting system of automobile, comprise automobile ECU and the oil sprayer being connected with automobile ECU, described automobile ECU is connected in CAN bus, it is characterized in that, this oil quantity limiting system also comprises the pressure transducer for the axial pressing force F of direction of measurement dish, this pressure transducer is connected with above-mentioned automobile ECU, the steering wheel shaft that the automobile actual parameter signal that described automobile ECU can transport CAN bus and pressure transducer transport to the setting value in pressing force F and ECU relatively and the work of pipage control SC sigmal control oil sprayer whether.
The moment touching on the brake driver, due to effect of inertia, driver can apply an axial pressing force F to steering wheel, the pressure transducer being arranged on steering wheel gathers this pressing force F, and sending to ECU, ECU is by the automobile actual parameter signal transporting in this pressing force F and CAN bus and be preset in the setting value comparison in ECU, when comparative result meets certain condition, ECU controls oil sprayer and closes, and stops oil spout.
In the oil quantity limiting system of above-mentioned automobile, described pressure transducer is piezoelectric transducer.Piezoelectric transducer can gather pressure signal and convert electrical signal to and send to ECU.
In the oil quantity limiting system of above-mentioned automobile, between described automobile ECU and described pressure transducer, be also serially connected with bandwidth-limited circuit.Adopt the method for serial connection bandwidth-limited circuit can reduce noise jamming, while preventing that automobile from travelling under rugged environment, because the factor such as jolt causes noise jamming, and then cause ECU control oil sprayer to stop the security risk that oil spout brings.
In the oil quantity limiting system of above-mentioned automobile, the automobile actual parameter signal that described CAN bus is carried to ECU comprises the longitudinal actual acceleration A1 of vehicle body, the vertical actual acceleration A2 of vehicle body and actual vehicle speed V.
In the oil quantity limiting system of above-mentioned automobile, default a pressure set points F1, a speed of a motor vehicle setting value V1, a longitudinal acceleration setting value a1 and a vertical acceleration setting value a2 in described ECU; When described steering wheel shaft is greater than pressure set points F1, actual vehicle speed V and is greater than speed of a motor vehicle setting value V1, the longitudinal actual acceleration A1 of vehicle body and is greater than longitudinal acceleration setting value a1 and vertical actual acceleration A2 and is less than vertical acceleration setting value a2 to pressing force F, ECU sends a signal to oil sprayer, and controls the operation that oil sprayer is carried out not oil spout.
In the oil quantity limiting system of above-mentioned automobile, described ECU also connects one for the accelerator pedal position sensor of gas pedal state is provided.Accelerator pedal position sensor can, by gathering the change in location of gas pedal, determine that whether gas pedal is in accelerating need state.
In the oil quantity limiting system of above-mentioned automobile, described ECU is less than pressure set points F1 and gas pedal when accelerating need state to pressing force F receiving steering wheel shaft, and ECU controls after oil sprayer is carried out the operation of not oil spout and re-executes operated fuel injection.
Compared with prior art, the axial pressing force F that when advantage of the oil quantity limiting system of this automobile is to brake by collection, driver applies steering wheel because of inertia and the various actual parameters of automobile are processed judgement vehicle condition, and control the open and close of oil sprayer, to prevent the unwillingly property of automobile, accelerate, guarantee traffic safety, and this simplicity of design is reliable.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the oil quantity limiting system of this automobile.
Fig. 2 is the working principle flow chart of the oil quantity limiting system of this automobile while closing oil sprayer.
Fig. 3 is the working principle flow chart of the oil quantity limiting system of this automobile while reopening oil sprayer.
Embodiment
Be below specific embodiments of the invention by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As shown in Figure 1, Figure 2 and shown in Fig. 3, a kind of oil quantity limiting system of automobile, by the ECU of automobile, control the switching of oil sprayer, comprise the pressure transducer of being located on steering wheel, pressure transducer in the present embodiment is piezoelectric transducer, is connected to the input end of bandwidth-limited circuit, and the output terminal of bandwidth-limited circuit connects the signal input part of ECU, the signal output part of ECU is connected on oil sprayer, and the signal input part of above-mentioned ECU also joins with CAN bus and accelerator pedal position sensor.CAN bus is for providing longitudinal acceleration A1 and vertical acceleration A2 and the actual vehicle speed V of automotive body; Whether accelerator pedal position sensor is used for providing gas pedal in accelerating need state, and when gas pedal is not operated, gas pedal is in non-acceleration need state, otherwise, in accelerating need state.Piezoelectric transducer puts on the axial pressing force F on steering wheel for measuring driver, and by this axial pressing force F by electric signal transmission to ECU.In ECU, be preset with a pressure set points F1, a vehicle body longitudinal acceleration value a1, a speed of a motor vehicle vertical acceleration value a2 and a vehicle speed value V1(as V1=30km/h).
In vehicle traveling process, piezoelectric transducer Real-time Collection driver on steering wheel is applied to the axial pressing force F on steering wheel, after bandwidth-limited circuit filtering clutter disturbs, send to ECU, ECU receives longitudinal acceleration A1, vertical acceleration A2 and the actual vehicle speed V from the automotive body of CAN bus simultaneously.Now, ECU compares the Various types of data receiving as follows with the corresponding setting value in being pre-stored in ECU:
(1), whether the axial pressing force F of the actual steering wheel of automobile is greater than pressure set points F1;
(2), whether vehicle body longitudinal acceleration A1 is greater than setting value a1;
(3), whether vehicle body vertical acceleration A2 is less than setting value a2;
(4), whether automobile actual vehicle speed V is greater than setting value V1.
If above-mentioned four conditions are "Yes", ECU judgement automobile need to carry out Emergency braking, and controls the operation that oil sprayer is carried out not oil spout, thereby reduces engine speed, prevents that the unwillingly property of automobile from accelerating; If having any one condition in above-mentioned four conditions is "No", ECU gets back to original state, carries out reception, comparison and the judgement of next group data, the normal oil spout of oil sprayer in this process.
After braking automobile has moved, need to re-execute while accelerating, ECU need to first make the following judgment:
(1), whether the axial pressing force F of the actual steering wheel of automobile is less than setting value F1;
(2), whether gas pedal steps on (whether in accelerating need state).
When if above-mentioned condition is "Yes", ECU controls oil sprayer and carries out operated fuel injection, and automobile accelerates again; If having any one in above-mentioned condition is "No", ECU control oil sprayer continues to carry out not operated fuel injection, and automobile is still in braking state.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (5)
1. the oil quantity limiting system of an automobile, comprise automobile ECU and the oil sprayer being connected with automobile ECU, described automobile ECU is connected in CAN bus, it is characterized in that, this oil quantity limiting system also comprises the pressure transducer for the axial pressing force F of direction of measurement dish, this pressure transducer is connected with above-mentioned automobile ECU, the steering wheel shaft that the automobile actual parameter signal that described automobile ECU can transport CAN bus and pressure transducer transport to the setting value in pressing force F and ECU relatively and the oil spout of pipage control SC sigmal control oil sprayer whether, the automobile actual parameter signal that described CAN bus is carried to ECU comprises the longitudinal actual acceleration A1 of vehicle body, the vertical actual acceleration A2 of vehicle body and actual vehicle speed V, a default pressure set points F1 in described ECU, one speed of a motor vehicle setting value V1, one longitudinal acceleration setting value a1 and a vertical acceleration setting value a2, when described steering wheel shaft is greater than pressure set points F1, actual vehicle speed V and is greater than speed of a motor vehicle setting value V1, the longitudinal actual acceleration A1 of vehicle body and is greater than longitudinal acceleration setting value a1 and vertical actual acceleration A2 and is less than vertical acceleration setting value a2 to pressing force F, ECU sends a signal to oil sprayer, and controls the operation that oil sprayer is carried out not oil spout, in above-mentioned four conditions, having one or one is "No" above, and ECU enters reception, comparison and the judgement of next round data, the normal oil spout of oil sprayer.
2. the oil quantity limiting system of automobile according to claim 1, is characterized in that, described pressure transducer is piezoelectric transducer.
3. the oil quantity limiting system of automobile according to claim 1 and 2, is characterized in that, between described automobile ECU and described pressure transducer, is also serially connected with bandwidth-limited circuit.
4. the oil quantity limiting system of automobile according to claim 1 and 2, is characterized in that, described ECU also connects one for the accelerator pedal position sensor of gas pedal state is provided.
5. the oil quantity limiting system of automobile according to claim 4, it is characterized in that, described ECU is less than pressure set points F1 and gas pedal when accelerating need state to pressing force F receiving steering wheel shaft, and ECU controls after oil sprayer is carried out the operation of not oil spout and re-executes operated fuel injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110213339.6A CN102345521B (en) | 2011-07-28 | 2011-07-28 | Oil quantity limiting system of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110213339.6A CN102345521B (en) | 2011-07-28 | 2011-07-28 | Oil quantity limiting system of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102345521A CN102345521A (en) | 2012-02-08 |
| CN102345521B true CN102345521B (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110213339.6A Expired - Fee Related CN102345521B (en) | 2011-07-28 | 2011-07-28 | Oil quantity limiting system of automobile |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4200642A1 (en) * | 1992-01-13 | 1993-07-15 | Sandor Nagy | Vehicular driver vigilance alarm coupled to steering wheel - incorporates two timed circuits for successive alerting of inattentive driver and of others at risk. |
| US5874892A (en) * | 1998-01-23 | 1999-02-23 | Antonellis; Domenico | Vehicle warning system |
| DE19753160C1 (en) * | 1997-11-29 | 1999-04-15 | Bosch Gmbh Robert | Arrangement for detecting an impending accident situation for a motor vehicle |
| KR20050066160A (en) * | 2003-12-26 | 2005-06-30 | 현대자동차주식회사 | Apparatus for controlling fuel injection of engine in automobile and method of the same |
| CN1907750A (en) * | 2005-08-05 | 2007-02-07 | 日产自动车株式会社 | Vehicle driving assist system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001247022A (en) * | 2000-03-03 | 2001-09-11 | Mitsuo Tomizuka | Braking device interlocking with steering wheel of vehicle |
| JP2005219611A (en) * | 2004-02-05 | 2005-08-18 | Fujitsu Ten Ltd | Drive assisting device |
-
2011
- 2011-07-28 CN CN201110213339.6A patent/CN102345521B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4200642A1 (en) * | 1992-01-13 | 1993-07-15 | Sandor Nagy | Vehicular driver vigilance alarm coupled to steering wheel - incorporates two timed circuits for successive alerting of inattentive driver and of others at risk. |
| DE19753160C1 (en) * | 1997-11-29 | 1999-04-15 | Bosch Gmbh Robert | Arrangement for detecting an impending accident situation for a motor vehicle |
| US5874892A (en) * | 1998-01-23 | 1999-02-23 | Antonellis; Domenico | Vehicle warning system |
| KR20050066160A (en) * | 2003-12-26 | 2005-06-30 | 현대자동차주식회사 | Apparatus for controlling fuel injection of engine in automobile and method of the same |
| CN1907750A (en) * | 2005-08-05 | 2007-02-07 | 日产自动车株式会社 | Vehicle driving assist system and method |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2001-247022A 2001.09.11 |
| JP特开2005-219611A 2005.08.18 |
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| CN102345521A (en) | 2012-02-08 |
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