CN105180948A - Work method of navigation system capable of preventing pileup - Google Patents
Work method of navigation system capable of preventing pileup Download PDFInfo
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- CN105180948A CN105180948A CN201510522627.8A CN201510522627A CN105180948A CN 105180948 A CN105180948 A CN 105180948A CN 201510522627 A CN201510522627 A CN 201510522627A CN 105180948 A CN105180948 A CN 105180948A
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- vehicle
- plunger
- streetscape
- gasoline
- work
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/28—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network with correlation of data from several navigational instruments
- G01C21/30—Map- or contour-matching
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/36—Input/output arrangements for on-board computers
- G01C21/3602—Input other than that of destination using image analysis, e.g. detection of road signs, lanes, buildings, real preceding vehicles using a camera
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a work method of a navigation system capable of preventing pileup. The navigation system comprises a navigation device and a plurality of camera devices arranged on the periphery of a vehicle, where the navigation device is installed. The navigation device comprises a processor module, which is connected to the vehicle controller of the vehicle. When the processor module finds out that brake lamp of a vehicle (A), which is in front of the vehicle (B) in the same lane, lights; the processor module sends a brake lamp control signal to the vehicle controller; the vehicle controller controls the brake lamp of the vehicle (B) to light so as to indicate a vehicle (C) behind the vehicle (B) to carry out effective action in time so as to keep a safe distance, thus the vehicle rear-end collision is avoided, so the pileup will not happen, and the traveling safety is guaranteed.
Description
Technical field
The present invention relates to navigation field, particularly relate to a kind of method of work of the navigational system avoiding the chain of rings to knock into the back.
Background technology
In the process of moving, often there is the situation that fore-aft vehicle spacing is shorter, easily cause rear-end collision in existing vehicle; In addition, front truck dubs brake or emergency brake in the process of moving, often cannot distinguish in rear vehicle, and rear car can only judge the state of front truck by the change of sighting distance, control self speed of a motor vehicle, and when the speed of a motor vehicle is very fast, this judgement often not in time, and then causes knocking into the back.And after once knocking into the back, and then the chain of rings can occur and knock into the back.
How avoiding the chain of rings to knock into the back, is the technical barrier that this area will solve.
Summary of the invention
The object of this invention is to provide a kind of method of work of navigational system, it can avoid the chain of rings to knock into the back.
In order to solve the problems of the technologies described above, the invention provides a kind of method of work of navigational system, this navigational system comprises: guider (this device can be on-vehicle navigation apparatus, also can be the smart machine such as mobile phone or panel computer with GPS navigation function) and multiple camera head being located at vehicle periphery; Described guider comprises: the processor module be connected with the vehicle control device of place vehicle; Described method of work comprises: when processor module is lighted by vehicle (the i.e. car one) brake lamp in the front, track, place of camera head discovery place vehicle, processor module sends brake lamp and controls signal to vehicle control device, the brake lamp being controlled place vehicle (i.e. car two) by this vehicle control device lights, and then the rear car (i.e. car three) of the brake information in front to current place vehicle is transmitted, adopt an effective measure in time to point out front vehicle, note maintaining safe distance, front vehicle is avoided to knock into the back, and then avoid the chain of rings to knock into the back, guarantee traffic safety.
Described guider also comprises: for obtaining the gyroscope of vehicle heading, for obtaining the GPS module of vehicle traveling-position, for the data-carrier store of store map data and streetscape data, and processor module and display module; Processor module obtains vehicle acceleration, the speed of a motor vehicle, sea level elevation, reclining angle information by gyroscope; Described method of work also comprises: when vehicle travels by pre-set navigational path, and the real time scene around vehicle captured in real-time Current vehicle followed by described camera head; If there is complex crossing in front, then described real time scene and the streetscape of the correspondence position prestored in described data-carrier store are carried out mating that (corresponding image matching technology is prior art by described processor module, wherein, a kind of optional method is the method adopting characteristic matching, namely the landmark building in described real time scene and/or road sign and/or significant streetscape etc. is first gathered, then the appropriate section in the streetscape of the correspondence position prestored in itself and described data-carrier store is carried out comparison one by one, if there is the similarity of more than 70%, namely think identical; Also other known matching process can be adopted), simultaneously in conjunction with described pre-set navigational path, judge the position at Current vehicle place, road and correct travel direction; Then control described display module and show corresponding navigation picture, comprise at this navigation picture: the described real time scene in Current vehicle dead ahead and mark the vehicle heading matched with guidance path in this real time scene with arrow; Described arrow is labeled on the road in real time scene.
Preferably, described camera head comprises the camera that at least one is located at right ahead; The streetscape of described real time scene with the correspondence position prestored in described data-carrier store, orientation mates by described processor module, to upgrade described streetscape data; Play and improve the accuracy of images match, the effect of reliability further.
Preferably, when the streetscape of described real time scene with the correspondence position prestored in described data-carrier store, orientation (or corresponding vehicle attitude, travel direction) mates by described processor module, comprise with the method upgrading described streetscape data:
If record described real time scene relative to described streetscape, there is new road sign or traffic mark, or certain external wall billboard or decorative hair change more, or newly-increased building or fork in the road etc. easily found by driver and the object distinguished time, then described processor module is according to described real time scene, to the correspondence position prestored in described data-carrier store, corresponding orientation (or corresponding vehicle attitude, travel direction) streetscape upgrade, namely in the corresponding streetscape of described data-carrier store, described new road sign or traffic mark is upgraded, or certain external wall billboard or decoration, or newly-increased building or fork in the road etc. are easily found by driver and the object distinguished, when coming same place to facilitate next time, can carry out fast to corresponding image, accurate match.
Described navigational system also comprises: can with the remote server of described guider wireless telecommunications, the real time scene that this remote server real-time reception is taken from multiple guider, remote server comprises a three-dimensional map data storehouse, stores in a region: navigation map data, streetscape in this three-dimensional map data storehouse, and/or the position of building and elevation information, and/or the position on mountain range or hills and elevation information, this remote server extracts streetscape wherein according to described real time scene, and/or the exterior wall image of building, and/or the outside drawing picture on mountain range or hills, then by obtain this image to the streetscape of the relevant position in three-dimensional map data storehouse, and/or building, and/or (the streetscape stored in original described three-dimensional map data storehouse filled accordingly by the outside drawing picture of the corresponding orientation on mountain range or hills, external wall, the profile on mountain range or hills is default or blank) or upgrade, have and the actual streetscape conformed to obtain, and/or the exterior wall image of building, and/or the three-dimensional map data storehouse of the outside drawing picture on mountain range or hills.Wherein, each image is accompanied with the information such as geographic coordinate, orientation.
When the gps signal that gps signal or reception were damaged, maybe cannot be received to the GPS module of described guider is invalid, guider obtains the outside drawing picture in the streetscape of current location periphery and/or at least one orientation on building and/or mountain range or hills by camera head, then this outside drawing picture is mated with the image of the relevant position stored in remote server, corresponding orientation, to find the image matched, and then draw current location map reference and towards, and mark on navigation map, promptly and accurately to locate, and then user is avoided to get lost.
Described guider according to the map reference of described current location and towards, carry out path navigation.
Present invention also offers a kind of method of work applying the vehicle of the method for work of above-mentioned navigational system, (described vehicle can be car, offroad vehicle, hybrid vehicle, truck, engineering truck, agricultural vehicle etc.), this vehicle comprises petrol engine, this petrol engine comprises fuel injector, fuel injector comprises: valve body and the plunger be snug fit in valve body, plunger is driven by the controller on its top, the bottom of plunger is provided with needle, the outer wall of needle is suitable for coordinating with the inner wall sealing of the valve seat in valve body, the inwall of valve seat is provided with liquid outlet, valve body is provided with for the inlet opening to valve seat place gasoline feed, drainage channel is provided with in valve body, one end of drainage channel is connected with liquid outlet, its other end is connected with the mouth spray of body base.
Described drainage channel twist or snakelike.
Described drainage channel is located at the downside of valve seat, and the upper end of drainage channel is communicated with liquid outlet, and the lower end of drainage channel is communicated with mouth spray, and the centerline axis parallel of drainage channel is in the center line of valve body.
Plunger comprises upper plug and the lower plunger of end winding support connection, controller and upper plug are in transmission connection, upper plug sealing is snug fit in the plunger cavity in valve body, the internal diameter of plunger cavity is even, valve seat is located at the bottom of plunger cavity, and the diameter of lower plunger is less than upper plug, and the needle that diameter is less than lower plunger is located at the bottom of lower plunger, when plunger is in sliding process, the inner of inlet opening is connected with the cylinder chamber between the lateral surface of lower plunger and plunger cavity all the time.
Plunger comprises upper plug and the lower plunger of end winding support connection, controller and upper plug are in transmission connection, upper plug sealing is snug fit in the plunger cavity in valve body, the internal diameter of plunger cavity is even, valve seat is located at the bottom of plunger cavity, and the diameter of lower plunger is less than upper plug, and the needle that diameter is less than lower plunger is located at the bottom of lower plunger, when plunger moves to uppermost position in fig-ure, inlet opening is suitable for being connected with the cylinder chamber between the lateral surface of lower plunger and plunger cavity; When plunger move to lowermost position put time, upper plug is suitable for the inner of inlet opening to close.
When plunger move to lowermost position put time, the edge of upper plug lower end is lower than the inner lower limb of inlet opening and both spacing G is 0.05-0.25mm.
The equal diameters of liquid outlet, drainage channel and mouth spray, its diameter is 0.1-0.3mm.
The present invention also provides a kind of method of work of vehicle, and it comprises the following steps:
A, gasoline enter in the cylinder chamber between lower plunger lateral surface and plunger cavity from inlet opening;
B, controller make plunger put from lowermost position and are moved upward to uppermost position in fig-ure, produce the gap of setting between the outer wall of needle and the inwall of valve seat, and the gasoline in cylinder chamber enters liquid outlet through this gap, and gasoline sprays in cylinder from mouth spray after drainage channel;
C, controller make plunger move to lowermost position to put, needle and valve base sealing, and drainage channel is not communicated with cylinder chamber, and single injection process terminates, and again repeat step a-c during oil spout.
The present invention also provides a kind of method of work of vehicle, and it comprises the following steps:
D, controller make plunger remain on lowermost position to put, needle and valve base sealing, and drainage channel is not communicated with the cylinder chamber between lower plunger lateral surface and plunger cavity;
E, controller make plunger put from lowermost position to move up, when displacement is greater than spacing G, gasoline enters in cylinder chamber from inlet opening, plunger continues to be moved upward to uppermost position in fig-ure, the gap of setting is produced between the outer wall of needle and the inwall of valve seat, gasoline in cylinder chamber enters liquid outlet through this gap, and gasoline sprays in cylinder from mouth spray after drainage channel;
F, controller make plunger move down, and when the position that plunger is concordant with the inner lower limb of inlet opening from edge, lower end continues to move to the process of putting lowermost position, upper plug closes the inner of inlet opening, and plunger makes its pressure raise to the gasoline extruding in cylinder chamber;
G, plunger continue to move to lowermost position and put, needle and valve base sealing, and drainage channel is not communicated with cylinder chamber, and single injection process terminates, and again repeat steps d-g during oil spout.
The gap of described setting is 0.3-0.5mm.
The invention has the beneficial effects as follows, (1) navigating instrument of the present invention, by the rear car transmission of the brake information of front vehicles to current place vehicle, adopt an effective measure in time to point out front vehicle, note maintaining safe distance, avoid front vehicle to knock into the back, and then avoid the chain of rings to knock into the back, ensure that traffic safety.(2) navigating instrument is in actual navigation procedure, due to map rejuvenation not in time, the reasons such as navigation signal precision is lower, cause vehicle drive to complex crossing (refer to there is multiple crossing rotary island, cruciform fork in the road, M shape crossing, there is the crossing etc. at the up road junction of overhead road of city) time, the instruction of navigating instrument or navigation indicating image often delayed, even make mistakes, or navigation picture is difficult and actual road conditions accurate match, this easily causes driver to sail the travel route of mistake into.Above-mentioned technical matters how is avoided to be the technical barrier of navigation field.Roadside streetscape and guidance path combine by real scene navigation system of the present invention, to realize marking the vehicle heading matched with guidance path in the streetscape of roadside, there is real-time good, the advantage that the property guided is good, improve in the reliability of the navigation of complex crossing and ease for use, driver can be avoided to sail the travel route of mistake into; (3) firing chamber in the needle of precision, valve seat and cylinder is separated by drainage channel, when in cylinder during gasoline combustion, sealing state is between needle and valve seat, the colloid formed after the soot particulate matter that gasoline produces after the combustion of firing chamber, non-Thorough combustion not easily enters in the airtight drainage channel in upper end, thus prevent above-mentioned substance to be attached on the outer wall of liquid outlet place needle or the inwall of valve seat, gasoline passage gaps after preventing carbon distribution from blocking needle unlatching and between valve seat, prevents the oil spout efficiency of fuel injector from decaying.Gasoline is when spirality or the flowing of snakelike drainage channel, in the quickening of flows by action speed, the kinetic energy increase of rotating inertia force, gasoline is made to produce stronger washing action to the sediment be attached on drainage channel inwall, be conducive to the sediment removed in time, efficiently on drainage channel inwall, prevent deposit accumulation from forming final carbon distribution; The gasoline accelerating to flow in drainage channel is after mouth spray ejection, its jet velocity is faster, gasoline impacts with the air in faster speed and cylinder, be conducive to the atomizing effect improving gasoline, gasoline is made to mix more abundant with air in cylinder, thus reduce the insufficient phenomenon of gasoline combustion, the colloid formed after reducing the soot particulate matter and non-Thorough combustion produced after burning, reduce the deposit formation in fuel injector drainage channel and the carbon distribution formation volume in cylinder.(3) centerline axis parallel of drainage channel is in the center line of valve body, the central axis of drainage channel is made to keep vertical state, when gasoline flows through drainage channel under pressure, gravity also produces accelerating effect to gasoline, make that gasoline is faster at rotary movement medium velocity, kinetic energy is larger, strengthen its developing result, improve the speed that gasoline sprays from mouth spray further.(4) upper plug coordinates the gasoline to having pressure in plunger cavity to seal with plunger cavity, prevent gasoline flow direction controller, the diameter of lower plunger is less than upper plug, the cylinder chamber between the lateral surface of lower plunger and plunger cavity is made to store gasoline, when plunger is between Upper-lower Limit position in moving process, the inner of inlet opening remains and to be communicated with the space of the storage gasoline in this plunger cavity, ensures the supply of gasoline.(5) when plunger moves to uppermost position in fig-ure, inlet opening is communicated with cylinder chamber, when plunger move to lowermost position put time, the inner of inlet opening is closed by upper plug; When the position of plunger from the inner just closing inlet opening continues to move to process bottom, gasoline in cylinder chamber is extruded, improve the expulsion pressure of fuel injector at injection process end, enhance gasoline for the sedimental washing action on drainage channel inwall; Enhance the washing action of gasoline for the outer wall of liquid outlet place needle or the inwall of valve seat simultaneously, prevent above-mentioned soot particulate matter and colloid deposition herein further and form carbon distribution; The raising of the expulsion pressure at injection process end, be conducive to gasoline in drainage channel is discharged fast, reduce the remaining amount of gasoline of drainage channel inwall attachment, the amount of gasoline of gasoline single injection event is utilized more fully, makes control unit of engine (ECU) that the emitted dose of gasoline can be controlled more accurately; Gasoline sprays from mouth spray with more high pressure, makes gasoline mix more abundant with the air in cylinder.(6) equal diameters of liquid outlet, drainage channel and mouth spray, can ensure that in three, either party all can not produce obstruction to the flowing of gasoline, its diameter is 0.1-0.3mm, and the oil spout aperture comparing existing fuel injector is less, improves expulsion pressure and gasoline atomizing effect.(7) when after plunger Open valve, the gap set between needle and valve seat is 0.3-0.5mm, is more than or equal to the diameter of liquid outlet, drainage channel and mouth spray, reduces the resistance of gasoline by gap, ensures the timely supply of gasoline.(8) edge of upper plug lower end is lower than the inner lower limb of inlet opening and both spacing G is set to 0.05-0.25mm, this spacing is made to be less than the gap 0.3-0.5mm of the setting between the needle of setting and valve seat, both ensure that to pressurize to the gasoline in cylinder chamber in injection process end, plunger moves past Cheng Zhongyou makes gasoline earlier enter in cylinder chamber, reduces the retardation time of oil spout.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the forward three-dimensional perspective of the anti-carbon deposition fuel injector in embodiment 1;
Fig. 2 is the vertical view of the anti-carbon deposition fuel injector in embodiment 1;
Fig. 3 is the A-A cut-open view of the anti-carbon deposition fuel injector in embodiment 1;
Fig. 4 is the B-B cut-open view of the anti-carbon deposition fuel injector in embodiment 1;
Fig. 5 is the horizontal three-dimensional perspective of the anti-carbon deposition fuel injector in embodiment 1;
Fig. 6 is the forward three-dimensional perspective of valve body, plunger cavity, conical cavity, valve seat and drainage channel in embodiment 1;
Fig. 7 is the partial enlarged view of valve body, plunger cavity, needle, valve seat and drainage channel in embodiment 1;
Fig. 8 is the forward three-dimensional perspective of the anti-carbon deposition fuel injector in embodiment 2;
Fig. 9 is the B-B cut-open view of the anti-carbon deposition fuel injector in embodiment 2.
Figure 10 shows the theory diagram of navigational system of the present invention.
Embodiment
Embodiment 1
As shown in Figure 10, the invention provides a kind of method of work of navigational system, described navigational system comprises: guider and camera head; Described guider comprises: for obtaining the gyroscope of vehicle heading, for obtaining the GPS module of vehicle traveling-position, for the data-carrier store of store map data and streetscape data, and processor module and display module.
Described method of work comprises: when processor module is lighted by the vehicle braking lamp in the front, track, place of camera head discovery place vehicle, processor module sends brake lamp and controls signal to vehicle control device, the brake lamp being controlled place vehicle by this vehicle control device lights, adopt an effective measure in time to point out the front vehicle of place vehicle, note maintaining safe distance, avoid this front vehicle to knock into the back, guarantee traffic safety.
When vehicle travels by pre-set navigational path, the real time scene around vehicle captured in real-time Current vehicle followed by described camera head; If there is complex crossing in front, then the streetscape of described real time scene with the correspondence position prestored in described data-carrier store mates by described processor module, simultaneously in conjunction with described pre-set navigational path, judge the position at Current vehicle place, road and correct travel direction; Then control described display module and show corresponding navigation picture, comprise at this navigation picture: the described real time scene in Current vehicle dead ahead and mark the vehicle heading matched with guidance path in this real time scene with arrow.
Wherein, described complex crossing refers to the crossing of route easily causing driver to sail mistake into, and it includes but not limited to the rotary island at multiple crossing, cruciform fork in the road, Y shape crossing, M shape crossing, has the crossing etc. at overhead road of city up-downgoing road junction or descending road junction,
Described camera head comprises the camera that at least one is located at right ahead; The streetscape of described real time scene with the correspondence position prestored in described data-carrier store, orientation mates by described processor module, to upgrade described streetscape data.
Further, at least one camera is respectively set, to obtain the image of vehicle both sides, rear side being positioned at vehicle both sides, rear side.
Further preferably, obtained the information such as vehicle acceleration, the speed of a motor vehicle, sea level elevation, reclining angle by gyroscope, by information structure vehicle attitudes such as vehicle travel headings, vehicle acceleration, the speed of a motor vehicle, sea level elevation, reclining angles.The streetscape of described real time scene with the correspondence position prestored in described data-carrier store, corresponding vehicle attitude mates by described processor module, to improve accuracy, the reliability of images match further.
As the present embodiment one preferred embodiment, the method of work of described navigational system also comprises, when the streetscape of described real time scene with the correspondence position prestored in described data-carrier store, orientation mates by described processor module, comprise with the method upgrading described streetscape data:
If record described real time scene relative to described streetscape, there is new road sign or traffic mark, or certain external wall billboard or decorative hair change more, or newly-increased building or fork in the road, then described processor module is according to described real time scene, the streetscape in the correspondence position prestored in described data-carrier store, corresponding orientation is upgraded, namely in the corresponding streetscape of described data-carrier store, described new road sign or traffic mark is upgraded, or certain external wall billboard or decoration, or newly-increased building or fork in the road.
Further, described navigational system also comprises: can be (concrete with the remote server of described guider wireless telecommunications, described wireless device can adopt the means of communications such as 3G/4G to realize, belong to known technology, here repeat no more), the real time scene that this remote server real-time reception is taken from multiple guider, remote server comprises a three-dimensional map data storehouse, stores in a region: navigation map data, streetscape in this three-dimensional map data storehouse, and/or the position of building and elevation information, and/or the position on mountain range or hills and elevation information, this remote server extracts streetscape wherein according to described real time scene, and/or the exterior wall image of building, and/or the outside drawing picture on mountain range or hills, then by obtain this image to the streetscape of the relevant position in three-dimensional map data storehouse, and/or building, and/or (the streetscape stored in original described three-dimensional map data storehouse filled accordingly by the outside drawing picture of the corresponding orientation on mountain range or hills, external wall, the profile on mountain range or hills is default or blank) or upgrade (the streetscape stored in original described three-dimensional map data storehouse, external wall, the profile on mountain range or hills is outmoded), have and the actual streetscape conformed to obtain, and/or the exterior wall image of building, and/or the three-dimensional map data storehouse of the outside drawing picture on mountain range or hills.Wherein, each image is accompanied with the information such as geographic coordinate, orientation.
As this enforcement one preferred embodiment, when the GPS module of described guider cannot receive gps signal, such as GPS module is damaged, gps signal cannot be received, when the gps signal received is invalid, guider obtains the streetscape of current location periphery by camera head, and/or building, and/or the outside drawing picture at least one orientation on mountain range or hills, then the relevant position will stored in this outside drawing picture and remote server, the image of corresponding orientation mates, to find the image matched, and then draw current location map reference and towards, and mark on navigation map, promptly and accurately to locate, and then avoid user to get lost.Preferred employing mountain range, hills, skyscraper etc. are less likely to occur to change the outside drawing picture of scenery as reference.
Described guider be suitable for according to the map reference of described current location and towards, carry out path navigation.
This preferred embodiment provides a kind of new navigate mode, and this navigation does not have error accumulation, accurate positioning, alternative traditional inertial navigation technology scheme when gps signal is lost.
Embodiment 2
As shown in figs. 1-7, the anti-carbon deposition fuel injector of vehicle of the present invention, it comprises: valve body 1, plunger cavity 2, conical cavity 3, valve seat 4, liquid outlet 5, inlet opening 6, control flume 7, controller 8, mouth spray 9, drainage channel 10, plunger 11, upper plug 12, lower plunger 13, cone-shaped body 14, needle 15, edge, lower end 16.
The top of columniform valve body 1 is provided with columniform control flume 7, the lower end of control flume 7 is provided with columniform plunger cavity 2, plunger cavity 2 is connected with control flume 7, the bottom of plunger cavity 2 is provided with the downward conical cavity in tip 3, it is hemispheric valve seat 4 that the bottom of conical cavity 3 is provided with inwall, described control flume 7, plunger cavity 2, conical cavity 3, valve seat 4 to be located at respectively in valve body 1 and with valve body 1 centre of gyration line altogether, valve seat 4 inwall is provided with a liquid outlet 5, the upper end being located at spirality in valve body 1 or snakelike drainage channel 10 is connected with liquid outlet 5, the lower end of drainage channel 10 is connected with the mouth spray 9 bottom valve body 1, the centerline axis parallel of drainage channel 10 is in the centre of gyration line of valve body 1, the sidewall of described valve body 1 is provided with one for injecting the inlet opening 6 of gasoline, the outer end of this inlet opening 6 communicates with the external world, its the inner communicates with plunger cavity 2.
Preferably, the equal diameters of liquid outlet 5 and drainage channel 10, mouth spray 9, its diameter is the preferred 0.2mm of 0.1-0.3mm(); Or the diameter of liquid outlet 5, drainage channel 10 and mouth spray 9 becomes large successively gradually.
Plunger cavity 2 in internal diameter cylindrical uniformly, controller 8 is provided with in control flume 7, the lower end of controller 8 is connected with plunger 11, plunger 11 comprises upper plug 12 and lower plunger 13, upper plug 12 is fixedly connected with lower plunger 13, upper plug 12 slipper seal is matched with in plunger cavity 2, and the diameter of lower plunger 13 is less than upper plug 12, and controller 8 is suitable for actuation plunger 11 vertically movement in the scope of setting.Lower plunger 13 is in moving process, and the inner of inlet opening 6 is connected with the cylinder chamber between the lateral surface of lower plunger 13 and plunger cavity 2 all the time, thus gasoline is constantly injected in fuel injector.The bottom of lower plunger 13 is provided with the downward cone-shaped body in tip 14, and the lower end of cone-shaped body 14 is provided with in hemispheric needle 15, upper and lower plunger and cone-shaped body 14, needle 15 concentrically axis.When upper and lower plunger move to lowermost position put time, the outer wall of needle 15 coordinates with the inner wall sealing of valve seat 4, thus cuts off the passage between plunger cavity 2 and liquid outlet 5; After upper and lower plunger is moved upward to uppermost position in fig-ure from most lower device, the gap of setting is there is between the outer wall of needle 15 and the inwall of valve seat 4, preferably its gap is the preferred 0.4mm of 0.3-0.5mm(), be suitable for entering liquid outlet 5 by this gap from inlet opening 6 gasoline entered in plunger cavity 2, gasoline is through drainage channel 10, eject from mouth spray 9 afterwards.
Described controller 8 comprises back-moving spring and solenoid (not shown), back-moving spring is compressive state and is suitable for actuation plunger 11 and moves down, makes needle 15 be pressed on valve seat 4, and the spring force that solenoid is suitable for driving irony plunger 11 to overcome back-moving spring moves up, make needle 15 lift off a seat 4 and reach the gap of above-mentioned setting.Solenoid is connected with outside control unit of engine (ECU) wire, and when solenoid is energized excitation, it sets up a magnetic field, and this magnetic field makes plunger 11 overcome the pretightning force of back-moving spring and move upward.
Gas supply mechanism is suitable for the gasoline of constant pressure to send in inlet opening 6.
The method of work of anti-carbon deposition fuel injector of the present invention comprises:
(1) gasoline enters in the cylinder chamber between lower plunger 13 lateral surface and plunger cavity 2 from inlet opening 6;
(2) controller 8 makes plunger 11 remain on lowermost position to put, the outer wall of needle 15 and the inner wall sealing of valve seat 4, and drainage channel 10 is not communicated with cylinder chamber;
(3) controller 8 makes plunger 11 put from lowermost position and is moved upward to uppermost position in fig-ure, make the gap that there is setting between the inwall of the outer wall of needle 15 and valve seat 4, the gasoline of cylinder chamber enters liquid outlet 5 through this gap, enter in drainage channel 10 afterwards, gasoline in drainage channel 10 in flow process owing to being subject to the effect of rotating inertia force, flow velocity is accelerated, and the carbon distribution on gasoline and drainage channel 10 inwall carries out strong flushing, and the gasoline after acceleration finally sprays in cylinder from mouth spray 9;
(4) controller 8 makes plunger 11 be reset to lowermost position to put, and needle 15 and valve seat 4 seal again, and drainage channel 10 is not communicated with plunger cavity 2, and single injection process terminates.
This anti-carbon deposition fuel injector adopts drainage channel 10, the needle 15 of precision, valve seat 4 are separated with the firing chamber in cylinder, when in cylinder during gasoline combustion, sealing state is between needle 15 and valve seat 4, the colloid formed after the soot particulate matter that gasoline produces after the combustion of firing chamber, non-Thorough combustion not easily enters in the airtight drainage channel in upper end 10, thus prevent above-mentioned substance to be attached on the outer wall of liquid outlet 5 place needle 15 or the inwall of valve seat 4, the gasoline passage gaps after preventing carbon distribution obstruction needle 15 from opening and between valve seat 4.
Gasoline is when drainage channel 10 flows, accelerate in the flows by action speed of rotating inertia force, gasoline is made to produce stronger washing action to the sediment be attached on drainage channel 10 inwall, be conducive to the sediment removed in time, efficiently on drainage channel 10 inwall, prevent deposit accumulation from forming final carbon distribution.
The gasoline of flowing is accelerated after mouth spray 9 ejection in drainage channel 10, its jet velocity is faster, gasoline impacts with the air in faster speed and cylinder, be conducive to the atomizing effect improving gasoline, gasoline is made to mix more abundant with air in cylinder, thus reduce the insufficient phenomenon of gasoline combustion, the colloid formed after reducing the soot particulate matter and non-Thorough combustion produced after burning, reduce the deposit formation in fuel injector drainage channel 10 and the carbon distribution formation volume in cylinder.
Embodiment 3
As shown in Figure 7, the fuel injector of the present embodiment, be relative to the difference part of embodiment 2: as Figure 8-9, inlet opening 6 is located at the middle and upper part of valve body 1, when plunger 11 moves to uppermost position in fig-ure, cylinder chamber between the lateral surface of inlet opening 6 and lower plunger 13 and plunger cavity 2 is connected, thus makes gasoline be injected in fuel injector; When plunger 11 move to lowermost position put time, the inner of inlet opening 6 is closed by upper plug 12, the edge, lower end 16 of upper plug 12 and both spacing G lower than the inner lower limb of inlet opening 6 be 0.05-0.25mm(preferably 0.1,0.15 or 0.2 or 0.24mm).
The method of work of the anti-carbon deposition fuel injector in the present embodiment comprises:
(1) controller 8 makes plunger 11 remain on lowermost position to put, the outer wall of needle 15 and the inner wall sealing of valve seat 4, and drainage channel 10 is not communicated with cylinder chamber;
(2) controller 8 makes plunger 11 put from lowermost position to move up, when displacement is greater than spacing G, gasoline enters in the cylinder chamber between lower plunger 13 lateral surface and plunger cavity 2 from inlet opening 6, plunger 11 continues to be moved upward to uppermost position in fig-ure, make the gap producing setting between the inwall of the outer wall of needle 15 and valve seat 4, gasoline in cylinder chamber enters liquid outlet 5 through this gap, and enter in drainage channel 10 afterwards, gasoline finally sprays in cylinder from mouth spray 9;
(3) controller 8 makes plunger 11 move down, when upper plug 12 to continue to move to the process of putting lowermost position from the position (i.e. the edge, lower end 16 of upper plug 12 and the inner lower limb of inlet opening 6 concordant) of the inner just closing inlet opening 6, after the gasoline of cylinder chamber is squeezed, pressure raises, and the jet velocity at its flowing velocity and mouth spray 9 place improves;
(4) plunger 11 moves to lowermost position and puts, and needle 15 and valve seat 4 seal again, and drainage channel 10 is not communicated with cylinder chamber, and single injection process terminates.
The gap preferably producing setting between the outer wall of needle 15 and the inwall of valve seat 4 is the preferred 0.4mm of 0.3-0.5mm().
In the present embodiment, when the position of plunger 11 from the inner just closing inlet opening 6 continues to move to process bottom, gasoline in cylinder chamber is extruded, improve the expulsion pressure of fuel injector at injection process end, enhance gasoline for the sedimental washing action on drainage channel 10 inwall; Enhance the washing action of gasoline for the outer wall of liquid outlet 5 place needle 15 or the inwall of valve seat 4 simultaneously, prevent above-mentioned soot particulate matter and colloid deposition herein further and form carbon distribution; The raising of the expulsion pressure at injection process end, be conducive to gasoline in drainage channel 10 is discharged fast, reduce the remaining amount of gasoline of drainage channel 10 inwall attachment, the amount of gasoline of gasoline single injection event is utilized more fully, makes control unit of engine (ECU) that the emitted dose of gasoline can be controlled more accurately; Gasoline sprays from mouth spray 9 with more high pressure, makes gasoline mix more abundant with the air in cylinder.
When plunger 11 needs to move up unlatching liquid outlet 5, plunger 11 is put from lowermost position and is moved to edge, lower end 16 process concordant with the inner lower limb of inlet opening 6, the pressure of cylinder chamber reduces, but due to the distance G of this process movement little, translational speed with Time Controller 8 actuation plunger 11 is fast, and swabbing has hysteresis quality, the swabbing effect that plunger 11 produces the gas in cylinder is in this process negligible, when plunger 11 continues to move up from the position that edge, lower end 16 is concordant with the inner lower limb of inlet opening 6, the gasoline with certain pressure enters in cylinder chamber from inlet opening 6, injection process starts, swabbing effect terminates.
Embodiment 4
A kind of petrol engine, this petrol engine comprises the fuel injector described in above-described embodiment 3 or 2.
Embodiment 5
A kind of vehicle, it comprises the petrol engine described in embodiment 4.
Embodiment 6
A kind of hybrid power system, comprise engine, first motor, second motor, clutch coupling, there is gear train and the battery of transmission shaft, described first motor and the second motor are connected respectively to battery, the motor shaft of described second motor is connected with described gear train, the output shaft of described engine is connected with the motor shaft of described first motor, the motor shaft of described first motor is tubular shaft, described clutch coupling is arranged in the motor shaft of described first motor, the active part of described clutch coupling is connected with the inwall of the motor shaft of described first motor, the secondary part of described clutch coupling is connected with described transmission shaft.Engine is petrol engine, and it comprises the fuel injector described in above-described embodiment 1 or 2.
A kind of bimodulus motor vehicle driven by mixed power, it comprises above-mentioned hybrid power system.
Embodiment 7
A kind of gasoline engine generator, this gasoline engine generator comprises the fuel injector described in above-described embodiment 3 or 2.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on instructions, must determine its technical scope according to right.
Claims (11)
1. a method of work for navigational system, is characterized in that, described navigational system comprises: guider and multiple camera head being located at vehicle periphery, place; Described guider comprises: the processor module be connected with the vehicle control device of place vehicle;
Described method of work comprises: when processor module is lighted by the vehicle braking lamp in the front, track, place of camera head discovery place vehicle, processor module sends brake lamp and controls signal to vehicle control device, and the brake lamp being controlled place vehicle by this vehicle control device lights.
2. the method for work of navigational system according to claim 1, is characterized in that,
Described guider also comprises: for obtaining the gyroscope of vehicle heading, for obtaining the GPS module of vehicle traveling-position, for the data-carrier store of store map data and streetscape data, and display module; Processor module obtains vehicle acceleration, the speed of a motor vehicle, sea level elevation, reclining angle information by gyroscope;
Described method of work comprises:
When vehicle travels by pre-set navigational path, the real time scene around vehicle captured in real-time Current vehicle followed by described camera head;
If there is complex crossing in front, then the streetscape of described real time scene with the correspondence position prestored in data-carrier store mates by described processor module, simultaneously in conjunction with described pre-set navigational path, judge the position at Current vehicle place, road and correct travel direction;
Then control described display module and show corresponding navigation picture, comprise at this navigation picture: the real time scene in Current vehicle dead ahead and mark the vehicle heading matched with guidance path in this real time scene with arrow.
3. the method for work of navigational system according to claim 2, is characterized in that, described camera head comprises the camera that at least one is located at right ahead;
The streetscape of described real time scene with the correspondence position prestored in described data-carrier store, orientation mates by described processor module, to upgrade described streetscape data.
4. the method for work of navigational system according to claim 3, characterized by further comprising, when the streetscape of described real time scene with the correspondence position prestored in described data-carrier store, orientation mates by described processor module, comprise with the method upgrading described streetscape data:
If record described real time scene to there is new road sign relative to described streetscape, or traffic mark, or certain external wall billboard, or decorative hair changes more, or newly-increased building, or fork in the road, then described processor module is according to described real time scene, the streetscape in the correspondence position prestored in described data-carrier store, corresponding orientation is upgraded, namely in the corresponding streetscape of described data-carrier store, upgrades described new road sign, or traffic mark, or certain external wall billboard, or decoration, or newly-increased building, or fork in the road.
5. the method for work of navigational system according to claim 4, it is characterized in that, described navigational system also comprises: can with the remote server of described guider wireless telecommunications, the real time scene that this remote server real-time reception is taken from multiple guider;
Described remote server comprises a three-dimensional map data storehouse, stores in a region: navigation map data, streetscape in this three-dimensional map data storehouse, and/or the position of building and elevation information, and/or the position on mountain range or hills and elevation information;
Described remote server extracts streetscape wherein according to described real time scene, and/or the exterior wall image of building, and/or the outside drawing picture on mountain range or hills, then by obtain this image to the streetscape of the relevant position in three-dimensional map data storehouse, and/or building, and/or the outside drawing picture of the corresponding orientation on mountain range or hills is filled accordingly or upgrades.
6. the method for work of navigational system according to claim 5, it is characterized in that, when the GPS module of described guider is damaged, maybe gps signal cannot be received, or receive gps signal invalid time, guider obtains the streetscape of current location periphery by camera head, and/or building, and/or the outside drawing picture at least one orientation on mountain range or hills, then the relevant position will stored in this outside drawing picture and remote server, the image of corresponding orientation mates, to find the image matched, and then draw current location map reference and towards, and mark on navigation map.
7. the method for work of navigational system according to claim 6, is characterized in that, described guider according to the map reference of described current location and towards, carry out path navigation.
8. the method for work of the vehicle of the method for work of application described in the claims 1, it is characterized in that: this vehicle comprises petrol engine, this petrol engine comprises fuel injector, fuel injector comprises valve body (1) and is snug fit at the plunger (11) in valve body (1), the bottom of plunger (11) is provided with needle (15), the inwall of valve seat (4) is provided with liquid outlet (5), it is characterized in that: in valve body (1), be provided with drainage channel (10), one end of drainage channel (10) is connected with liquid outlet (5), its other end is connected with the mouth spray (9) of valve body (1) bottom.
9. method of work according to claim 8, is characterized in that: described drainage channel (10) twist or snakelike.
10. method of work according to claim 8, is characterized in that comprising the following steps:
A, gasoline enter in the cylinder chamber between lower plunger (13) lateral surface and plunger cavity (2) from inlet opening (6);
B, controller (8) make plunger (11) put from lowermost position and are moved upward to uppermost position in fig-ure, the gap of setting is produced between the outer wall of needle (15) and the inwall of valve seat (4), gasoline in cylinder chamber enters liquid outlet (5) through this gap, and gasoline sprays in cylinder from mouth spray (9) after drainage channel (10);
C, controller (8) make plunger (11) move to lowermost position to put, and needle (15) and valve seat (4) seal, and single injection process terminates.
The method of work of 11. 1 kinds of vehicles, is characterized in that comprising the following steps:
D, controller (8) make plunger (11) remain on lowermost position to put, and needle (15) and valve seat (4) seal, and drainage channel (10) is not communicated with the cylinder chamber between lower plunger (13) lateral surface and plunger cavity (2);
E, controller (8) make plunger (11) put from lowermost position to move up, when displacement is greater than spacing G, gasoline enters in cylinder chamber from inlet opening (6), plunger (11) continues to be moved upward to uppermost position in fig-ure, the gap of setting is produced between the outer wall of needle (15) and the inwall of valve seat (4), gasoline in cylinder chamber enters liquid outlet (5) through this gap, and gasoline sprays in cylinder from mouth spray (9) after drainage channel (10);
F, controller (8) make plunger (11) move down, when the position that plunger (11) is concordant with the inner lower limb of inlet opening (6) from edge, lower end (16) is continued to move to the process of putting lowermost position, upper plug (12) closes the inner of inlet opening (6), and plunger (11) makes its pressure raise to the gasoline extruding in cylinder chamber;
G, plunger (11) continue to move to lowermost position and put, and needle (15) and valve seat (4) seal, and single injection process terminates.
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| CN201510522627.8A CN105180948A (en) | 2015-08-24 | 2015-08-24 | Work method of navigation system capable of preventing pileup |
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| CN201510522627.8A CN105180948A (en) | 2015-08-24 | 2015-08-24 | Work method of navigation system capable of preventing pileup |
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Effective date of registration: 20210112 Address after: 230000 Room 405, building 9, No.1 Park Road, 652 Changjiang West Road, Shushan District, Hefei City, Anhui Province Applicant after: Xie Baoquan Address before: 213000 Jinling North Road, Xinbei District, Changzhou City, Jiangsu Province, No. 99 Applicant before: Wu Hongping |
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Application publication date: 20151223 |