CN202937395U - Starting protective circuit of automobile engine - Google Patents
Starting protective circuit of automobile engine Download PDFInfo
- Publication number
- CN202937395U CN202937395U CN 201220612584 CN201220612584U CN202937395U CN 202937395 U CN202937395 U CN 202937395U CN 201220612584 CN201220612584 CN 201220612584 CN 201220612584 U CN201220612584 U CN 201220612584U CN 202937395 U CN202937395 U CN 202937395U
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- Prior art keywords
- starter
- relay
- ignition switch
- starting
- gear
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- Expired - Fee Related
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The utility model discloses a starting protective circuit of an automobile engine, and belongs to the technical field of automobile starter protection. The starting protective circuit comprises a storage battery, an ignition switch starting gear, a starter, a starting relay, an ignition switch igniting gear, a protective relay and a normally-closed engine oil pressure switch, wherein one output path of the storage battery is connected with the starter after passing through the ignition switch starting gear, the starting relay and the protective relay in sequence; and the other output path of the storage battery is connected with the starter after passing through the ignition switch igniting gear, the normally-closed engine oil pressure switch and the protective relay in sequence. According to the starting protective circuit disclosed by the utility model, the starter can be automatically switched off after the engine is successfully started, thereby providing safe protection for the starter.
Description
Technical field
The utility model relates to a kind of car engine start protective circuit, belongs to automobile starter resist technology field.
Background technique
The orthodox car engine start circuit is comprised of storage battery, ignition switch starting gear, starter motor and starter relay, when ignition switch starting gear is closed, the power connection of the coil terminals of starter relay, the switch terminal adhesive of starter relay, the power connection of starter motor, starter motor rotates, and drives engine rotation.After starting successfully, unclamp ignition switch, ignition switch starting gear disconnects, and the switch terminal of starter relay disconnects, and starter motor is deactivated.There are two problems in this start protection mode: if 1. the rear driver of engine start success does not unclamp ignition switch in time, at this moment starter motor can drive high speed rotating by launched machine conversely, easily cause starter motor to damage (during starting, the rotating speed that starter motor drives motor is 150～200r/min, after starting successfully, the minimum speed of motor is 700r/min); 2. during engine running, if the starting gear of the logical ignition switch of driver's misconnection can cause the starting tooth of the flywheel teeth impulse starter of motor, also easily cause starter motor to damage.
The model utility content
The purpose of this utility model is: propose a kind of improved car engine start protective circuit, to improve the protection effect of starter motor.
This circuit comprises storage battery, ignition switch starting gear, starter motor, starter relay, ignition switch igniting gear, protective relay and Normally closed type Oil pressure switch; wherein: be connected starter motor after a road output of described storage battery start gear, starter relay and protective relay by ignition switch successively, another road of described storage battery is exported successively by light a fire gear, Normally closed type Oil pressure switch of ignition switch and is connected starter motor with after protective relay.
Technique effect:
1, for two kinds of possible misoperations of driver, can make the starter motor auto-breaking, give the starter motor duplicate protection, improve the protection effect.
2, circuit structure is succinct, is easy to realize, has a good application prospect.
The accompanying drawing explanation
Fig. 1 is circuit reduction structural drawing of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Label title in Fig. 1 and Fig. 2: 1, storage battery; 2, ignition switch starting gear; 3, starter motor; 4, starter relay; 5, ignition switch igniting gear; 6, protective relay; 7, Normally closed type Oil pressure switch; 8, machine oil warning light.
Embodiment
Below the utility model is described in further detail.
Utilize original Normally closed type Oil pressure switch on motor car engine, then increase a protective relay, just can realize the purpose of this utility model.The simplified structure of the utility model car engine start protective circuit as shown in Figure 1; comprise storage battery 1, ignition switch starting gear 2, starter motor 3, starter relay 4, ignition switch igniting gear 5, protective relay 6 and Normally closed type Oil pressure switch 7; wherein: a road output of described storage battery 1 start gear 2, starter relay 4 and the rear connection starter motor 3 of protective relay 6 by ignition switch successively, and another road output of described storage battery 1 is lighted a fire by ignition switch successively and kept off 5, Normally closed type Oil pressure switch 7 and the rear connection starter motor 3 of protective relay 6.For meeting actual demand, this circuit also comprises machine oil warning light 8, and described machine oil warning light 8 is connected with the output of Normally closed type Oil pressure switch 7.
Normally closed type Oil pressure switch 7 is used for control engine machine oil warning light 8, and when not having engine oil pressure or engine oil pressure low, Normally closed type Oil pressure switch 7 is closed, engine oil pressure high during to setting value this switch disconnect.In engine ignition switch igniting gear 5 closures, if motor does not turn round or during engine start, at this moment, engine oil pump do not work or rotating speed lower, engine oil pressure is zero or lower, Normally closed type Oil pressure switch 7 closures, machine oil warning light 8 is lighted; After engine start successfully runs well, the oil pump faster rotational speed, engine oil pressure increases, and Normally closed type Oil pressure switch 7 disconnects, and machine oil warning light 8 extinguishes; If motor for some reason (as oil pump has fault) engine oil pressure lower than specified value, at this moment, Normally closed type Oil pressure switch 7 closures, machine oil warning light 8 is lighted, and reminds the driver to be overhauled as early as possible.
Circuit theory of the present utility model is as shown in Figure 2: if 1. after the engine start success, do not unclamp in time ignition switch, at this moment, because the Normally closed type Oil pressure switch disconnects, cut off the power supply of the coil terminals of protective relay, the switch terminal of protective relay disconnects, the power supply of starter motor is cut off, and starter motor is deactivated automatically, has realized protective function; 2. when engine running, if ignition switch starting gear has been led at this moment misconnection, because the Normally closed type Oil pressure switch disconnects; the switch terminal of protective relay always disconnects; even the logical ignition switch starting of misconnection gear, can not make starter motor work, realized equally protective function.
Claims (2)
1. a car engine start protective circuit, comprise storage battery (1), ignition switch starting gear (2), starter motor (3) and starter relay (4), it is characterized in that: also comprise ignition switch igniting gear (5), protective relay (6) and Normally closed type Oil pressure switch (7), wherein: a road output of described storage battery (1) is started gear (2) by ignition switch successively, starter relay (4) and the rear starter motor (3) that is connected of protective relay (6), another road output of described storage battery (1) is successively by the ignition switch gear (5) of lighting a fire, Normally closed type Oil pressure switch (7) and the rear starter motor (3) that is connected of protective relay (6).
2. car engine start protective circuit according to claim 1, it is characterized in that: also comprise machine oil warning light (8), described machine oil warning light (8) is connected with the output of Normally closed type Oil pressure switch (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220612584 CN202937395U (en) | 2012-11-19 | 2012-11-19 | Starting protective circuit of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220612584 CN202937395U (en) | 2012-11-19 | 2012-11-19 | Starting protective circuit of automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937395U true CN202937395U (en) | 2013-05-15 |
Family
ID=48321638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220612584 Expired - Fee Related CN202937395U (en) | 2012-11-19 | 2012-11-19 | Starting protective circuit of automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937395U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953894A (en) * | 2012-11-19 | 2013-03-06 | 无锡商业职业技术学院 | Start-up protection circuit for automobile engine |
| CN105317609A (en) * | 2015-02-16 | 2016-02-10 | 高小妮 | Protection mechanism capable of being used for engine gear ring and starter one-way gear |
-
2012
- 2012-11-19 CN CN 201220612584 patent/CN202937395U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953894A (en) * | 2012-11-19 | 2013-03-06 | 无锡商业职业技术学院 | Start-up protection circuit for automobile engine |
| CN105317609A (en) * | 2015-02-16 | 2016-02-10 | 高小妮 | Protection mechanism capable of being used for engine gear ring and starter one-way gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141119 |
|
| EXPY | Termination of patent right or utility model |