CN101519068A - Method and device for hybrid vehicle neutral position diagnosis - Google Patents
Method and device for hybrid vehicle neutral position diagnosis Download PDFInfo
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- CN101519068A CN101519068A CN200910132394A CN200910132394A CN101519068A CN 101519068 A CN101519068 A CN 101519068A CN 200910132394 A CN200910132394 A CN 200910132394A CN 200910132394 A CN200910132394 A CN 200910132394A CN 101519068 A CN101519068 A CN 101519068A
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- 230000007935 neutral effect Effects 0.000 title claims abstract description 52
- 238000003745 diagnosis Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 239000012634 fragment Substances 0.000 claims description 15
- 238000002405 diagnostic procedure Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 abstract description 3
- 210000004899 c-terminal region Anatomy 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention relates to a method and a device for hybrid vehicle neutral position diagnosis, which can be adapted to the complicated electromagnetic interference environment of a hybrid electric automobile and has high reliability. The method and the device for hybrid vehicle neutral position diagnosis are characterized by being provided with a neutral detection switch controlled by gears; the detection switch controls the conduction of a relay, and the linked contact of the relay controls the signal input of a control unit of the entire hybrid electric automobile; when the gear is positioned at the neutral position, the relay is powered on, the control unit of the entire hybrid electric automobile receives high level signals, and then neutral position is judged at the time; when the gear is positioned at the gear position, the neutral diction switch enables the relay to be powered off, the control unit of the entire hybrid electric automobile receives low level signals, and the gear position at the time is judged.
Description
Technical field
The present invention relates to a kind of hybrid vehicle neutral position diagnostic method and device.
Background technology
Along with becoming increasingly conspicuous of global environment and energy problem, the new automobile of exploitation anti-emission carburetor, low oil consumption becomes the top priority of current automobile industry development.The mixed power electric car technology has been avoided the deficiency of pure electric automobile on battery technology and energy Infrastructure, is a good solution of current problem, has become the focus of current international automobile research and development.
General mixed power electric car all has the automatic start-stop function; promptly when idling is waited for; whether hybrid power car load control unit (HCU) can satisfy the engine shutdown condition by the real-time judge vehicle; if satisfy; HUC can send instructions and to control unit of engine (ECU) driving engine be cut off; to save oil plant, reduce discharging.Behind engine shutdown; if certain moment HCU detects the enabled instruction that vehicle has not satisfied the engine shutdown condition or received chaufeur; then can utilize the motor of hybrid power system to start vehicle; replace traditional Starting mode; vehicle can restart apace like this, avoids the vehicle launch residence time long.
The range state of vehicle is as judging one of essential condition that engine idle is shut down and restarted in the hybrid power integrated vehicle control tactics, the reliability of its signal all has very large influence to normal operation of vehicle and safety.Therefore, a kind of gear detection device that possesses high reliability and self-diagnostic function of exploitation is what to be necessary very much with market outlook.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of hybrid vehicle neutral position diagnostic method and device, can be adapted to the complicated electromagnetic interference environment of mixed power electric car, possesses high reliability.
The present invention is based on same inventive concept, have two independent technique schemes:
1, a kind of hybrid vehicle neutral position diagnostic method is characterized in that: be provided with neutral gear detector switch by gear control, and the conducting of this detector switch control relay, the interlock contact control of relay is to the signal input of car load control unit; When gear is positioned at neutral gear, relay power, the car load control unit is received high level signal, then diagnosis is in Neutral Position at this moment; Otherwise when gear was located at grade, the neutral gear detector switch made the relay outage, and the car load control unit is received low level signal, and then diagnosis is in P PARK Position P this moment.
The interlock contact of relay constitutes a single pole double throw switch, and this single pole double throw switch control is to the signal input of car load control unit and control unit of engine; When the neutral gear detector switch was working properly, the signal that signal that the car load control unit is received and control unit of engine are received was opposite each other, and the car load control unit is by the comparison to aforementioned two groups of signals, and whether diagnosis neutral gear detector switch is in normal working.
Said neutral gear detector switch structure is, be provided with change speed gear box in gear shift refer to the steel ball that matches, steel ball is positioned at steel ball seat, the steel ball seat below is provided with electrode column, the electrode column below is provided with the shell fragment with the relay conducting, and shell fragment is by electrode column conducting, relay power under the initial condition; When steel ball moves downward, can drive electrode column and shell fragment and disconnect, thereby make the relay outage.
2, a kind of device of aforementioned hybrid vehicle neutral gear diagnostic method is characterized in that: have the neutral gear detector switch by gear control, this neutral gear detector switch is connected in series with relay, the energising of control relay; The moving contact of relay connects the signal input part of car load control unit.
The interlock contact of relay constitutes a single pole double throw switch, and two moving contacts of switch connect the signal input part of car load control unit and control unit of engine respectively.
Said neutral gear detector switch structure is, be provided with change speed gear box in gear shift refer to the steel ball that matches, steel ball is positioned at steel ball seat, the steel ball seat below is provided with electrode column, the electrode column below is provided with the shell fragment with the relay conducting, and shell fragment is by electrode column conducting, relay power under the initial condition; When steel ball moves downward, can drive electrode column and shell fragment and disconnect, thereby make the relay outage.The beneficial effect that the present invention has:
1, utilize the operating characteristic of relay: state switching time stable and less than 5ms, have high reliability, high service life characteristics such as (greater than 800,000 times), the middle transition state greater than 10ms can not appear in two groups of complementary signals guaranteeing the output of neutral gear detector switch.
2, the physical construction of neutral gear detector switch greatly reduces the complexity of structure, helps realizing requiring in its conformity of production and service life (greater than 500,000 times).
Description of drawings
Fig. 1 is a neutral gear detector switch structural representation of the present invention;
Fig. 2 is the lateral plan of Fig. 1;
Fig. 3 is schematic circuit diagram of the present invention.
The specific embodiment
Be provided with neutral gear detector switch by gear control, as shown in Figure 1, neutral gear detector switch structure is, be provided with change speed gear box in gear shift refer to the steel ball 1 that matches, steel ball is positioned at steel ball seat 2, the steel ball seat below is provided with electrode column 6, the electrode column below is provided with the shell fragment 8 with relay 9 conductings, when steel ball moves downward, can drive electrode column and shell fragment and disconnect, thereby make the relay outage.The neutral gear detector switch also is provided with limit spring 3, main spring 4, adapter shaft 5, axle sleeve 7, attaching plug 10, electrode column retracing spring 11.
As shown in Figure 3, neutral gear detector switch 12 is connected in series with relay 9, the conducting of control relay; The interlock contact of relay constitutes a single pole double throw switch, the signal input part that two moving contacts (terminal) A of switch, B meet car load control unit HCU and control unit of engine ECU respectively.A, B terminal are drawn high processing as the outside, and promptly low level is effective.Attaching plug terminal C ground connection, terminal D power connection.
When chaufeur changes at shelves from neutral gear gear, gear shift refers to press steel ball 1, steel ball is subjected to just moving down with steel ball base 2, limit spring 3, adapter shaft 5 and electrode column 6 behind the downward pressure, thereby two shell fragments 8 and electrode column are disconnected, thereby make the relay outage, A, the conducting of C terminal at this moment, B, C terminal disconnect.Otherwise A, C terminal disconnect B, the conducting of C terminal during neutral gear.
When the neutral gear detector switch does not trigger, be that gear is when being in neutral gear, terminal A, C disconnect, and terminal B, C connect, and the A road signal of delivering to car load control unit HCU is 1, the B road signal of delivering to control unit of engine ECU is 0, ECU negates the B circuit-switched data and delivers to HCU after handling, and compares with the A circuit-switched data, thinks the switch normal operation when data are identical, and this moment, data were 1, and then car load control unit HCU judges that the automobile gear level state is a neutral gear.When data are inequality, think that the neutral gear detector switch lost efficacy or damage.
When the neutral gear detector switch triggers, be that gear is when being in grade, terminal A, C connect, and terminal B, C disconnect, and the A road signal of delivering to car load control unit HCU is 0, the B road signal of delivering to control unit of engine ECU is 1, ECU negates the B circuit-switched data and delivers to HCU after handling, and compares with the A circuit-switched data, thinks the switch normal operation when data are identical, and this moment, data were 0, and then HCU judges that the automobile gear level state is at shelves.When data are not thought switch failure or damage simultaneously.
Claims (6)
1, a kind of hybrid vehicle neutral position diagnostic method is characterized in that:
Be provided with neutral gear detector switch by gear control, the conducting of this detector switch control relay, the interlock contact control of relay is to the signal input of car load control unit;
When gear is positioned at neutral gear, relay power, the car load control unit is received high level signal, then diagnosis is in Neutral Position at this moment;
Otherwise when gear was located at grade, the neutral gear detector switch made the relay outage, and the car load control unit is received low level signal, and then diagnosis is in P PARK Position P this moment.
2, hybrid vehicle neutral position diagnostic method according to claim 1 is characterized in that:
The interlock contact of relay constitutes a single pole double throw switch, and this single pole double throw switch control is to the signal input of car load control unit and control unit of engine;
When the neutral gear detector switch was working properly, the signal that signal that the car load control unit is received and control unit of engine are received was opposite each other, and the car load control unit is by the comparison to aforementioned two groups of signals, and whether diagnosis neutral gear detector switch is in normal working.
3, hybrid vehicle neutral position diagnostic method according to claim 1 is characterized in that:
Said neutral gear detector switch structure is, be provided with change speed gear box in gear shift refer to the steel ball that matches, steel ball is positioned at steel ball seat, the steel ball seat below is provided with electrode column, the electrode column below is provided with the shell fragment with the relay conducting, and shell fragment is by electrode column conducting, relay power under the initial condition; When steel ball moves downward, can drive electrode column and shell fragment and disconnect, thereby make the relay outage.
4, a kind of device of realizing claim 1 hybrid vehicle neutral position diagnostic method is characterized in that: have the neutral gear detector switch by gear control, this neutral gear detector switch is connected in series with relay, the energising of control relay; The moving contact of relay connects the signal input part of car load control unit.
5, the device of realization hybrid vehicle neutral position diagnostic method according to claim 4, it is characterized in that: the interlock contact of relay constitutes a single pole double throw switch, and two moving contacts of switch connect the signal input part of car load control unit and control unit of engine respectively.
6, the device of realization hybrid vehicle neutral position diagnostic method according to claim 5, it is characterized in that: said neutral gear detector switch structure is, be provided with change speed gear box in gear shift refer to the steel ball that matches, steel ball is positioned at steel ball seat, the steel ball seat below is provided with electrode column, the electrode column below is provided with the shell fragment with the relay conducting, and shell fragment is by electrode column conducting, relay power under the initial condition; When steel ball moves downward, can drive electrode column and shell fragment and disconnect, thereby make the relay outage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910132394A CN101519068A (en) | 2009-04-01 | 2009-04-01 | Method and device for hybrid vehicle neutral position diagnosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910132394A CN101519068A (en) | 2009-04-01 | 2009-04-01 | Method and device for hybrid vehicle neutral position diagnosis |
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| Publication Number | Publication Date |
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| CN101519068A true CN101519068A (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910132394A Pending CN101519068A (en) | 2009-04-01 | 2009-04-01 | Method and device for hybrid vehicle neutral position diagnosis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019919A (en) * | 2010-06-10 | 2011-04-20 | 中国神华能源股份有限公司 | Control application mode for air-braking small brake of multi- locomotive |
| CN105952889A (en) * | 2016-06-28 | 2016-09-21 | 广州汽车集团股份有限公司 | Gear switching signal acquisition device, method thereof, automobile gear-shifting system and automobile |
| CN112128360A (en) * | 2019-06-24 | 2020-12-25 | Sl株式会社 | Switch monitoring device for vehicle speed change |
-
2009
- 2009-04-01 CN CN200910132394A patent/CN101519068A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019919A (en) * | 2010-06-10 | 2011-04-20 | 中国神华能源股份有限公司 | Control application mode for air-braking small brake of multi- locomotive |
| CN102019919B (en) * | 2010-06-10 | 2012-12-26 | 中国神华能源股份有限公司 | Control application mode for air-braking small brake of multi- locomotive |
| CN105952889A (en) * | 2016-06-28 | 2016-09-21 | 广州汽车集团股份有限公司 | Gear switching signal acquisition device, method thereof, automobile gear-shifting system and automobile |
| CN112128360A (en) * | 2019-06-24 | 2020-12-25 | Sl株式会社 | Switch monitoring device for vehicle speed change |
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Application publication date: 20090902 |