CN101625276A - Detection device of engine oil pressure sensor for automobile engine and detection method thereof - Google Patents
Detection device of engine oil pressure sensor for automobile engine and detection method thereof Download PDFInfo
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- CN101625276A CN101625276A CN200910016659A CN200910016659A CN101625276A CN 101625276 A CN101625276 A CN 101625276A CN 200910016659 A CN200910016659 A CN 200910016659A CN 200910016659 A CN200910016659 A CN 200910016659A CN 101625276 A CN101625276 A CN 101625276A
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- engine oil
- oil pressure
- pressure pickup
- pickup
- pressure sensor
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Abstract
The invention discloses a detection device of engine oil pressure sensor for automobile engine, comprising a shell in which a pressure chamber is arranged. One end of the shell is successively connected with a throttling element provided with an orifice, a connecting device and an air supply, and the other end of the shell is provided with a three-way piece with one end thereof being respectively connected with an engine oil pressure sensor to be detected and a mechanical pressure gauge; the engine oil pressure sensor is connected with a pressure gauge and a low-pressure alarm lamp by a signal processing unit. The invention also provides a detection method used for the engine oil pressure sensor, maintenance personnel can detect whether a signal output by the engine oil pressure sensor is normal or not all the way, and the detection method has fewer steps, simple operation and easy judgment. The invention has the following beneficial effects: 1. using one device to detect different types of engine oil pressure sensors; and 2. manufacture and processing are convenient, cost is low, use is convenient, and requirements of field working environments and the like can be satisfied.
Description
(1) technical field
The present invention relates to a kind of detection device of engine oil pressure sensor for automobile engine and detection method thereof.
(2) background technology
At present, particularly the engine oil pressure pickup failure rate used of diesel engine is higher for motor car engine, but the engine oil pressure pickup that the maintenance personal changes has quite a few to belong to erroneous judgement, has all caused very big economic loss for vehicle user and vehicle manufacturing enterprise.Therefore, be badly in need of a kind ofly can carrying out the easy device that fast detecting is judged, help the maintenance personal to judge the quality of sensor quickly and accurately suspecting out of order sensor.
(3) summary of the invention
One of the object of the invention has provided a kind of detection device of engine oil pressure sensor for automobile engine, not only can judge fast whether engine oil pressure pickup has fault, and simple in structure, easy to operate.
In order to solve the problems of the technologies described above, the present invention realizes by following measure:
A kind of detection device of engine oil pressure sensor for automobile engine, comprise that an inside is provided with the housing of pressure chamber, described housing one end is connected with restricting element, coupling arrangement and the source of the gas of throttle orifice successively, the described housing other end is provided with three-way connection, this three-way connection other end connects engine oil pressure pickup to be measured and mechanical compression table respectively, and described engine oil pressure pickup is connected with voltage table by signal processing unit and is used for detecting the low pressure alarming pilot lamp of the built-in low pressure warning switch of electromechanical engine oil pressure pickup.
In the embodiment of the invention, described signal processing unit comprises power supply, the stabilized voltage supply that links to each other with power supply and constant current source and first amplifier and second amplifier parallel with one another, wherein said first amplifier links to each other, is used to be connected the electronic type engine oil pressure pickup with stabilized voltage supply, second amplifier links to each other, is used to be connected the mechanical type engine oil pressure pickup with constant current source, and first amplifier and second amplifier out link to each other with described voltage table by selector switch K, and described low pressure alarming pilot lamp links to each other with stabilized voltage supply.
In the embodiment of the invention, described coupling arrangement comprises draft tube and the valve connector that is used to be connected tire.
For easy to carry, described housing, low pressure alarming pilot lamp and signal processing unit are positioned at a casing, and described coupling arrangement is positioned at the casing side, and described mechanical compression table and voltage table are positioned at tank surface.
Another purpose of the present invention has provided a kind of detection method that is used for engine oil pressure pickup, and whether the maintenance personal is not only can omnidistance machines oil pressure sensor output signal normal, and step is few, simple to operate, easy judgement.
In order to solve the problems of the technologies described above, the present invention realizes by following measure:
A kind of detection method that is used for engine oil pressure pickup may further comprise the steps:
1) engine oil pressure pickup to be measured is linked to each other with housing, and the circuit interface of sensor is connected with the circuit of signal processing unit;
2) turn on the power switch, and utilize coupling arrangement to connect source of the gas, observe mechanical compression table and the indicating value of voltage table and the change procedure of indicating value;
3) coupling arrangement and source of the gas are disconnected, observe mechanical compression table and the indicating value of voltage table and the change procedure of indicating value;
4) when the indicating value of mechanical compression table and voltage table rose synchronously or descends, engine oil pressure pickup was normal, otherwise engine oil pressure pickup has fault.
Whether when detecting the electromechanical engine oil pressure pickup, said method is further comprising the steps of: when the pressure in the pressure chamber is lower than alarm pressure, observes the low pressure alarming pilot lamp and light, judge whether fault of low pressure warning switch K2.
Beneficial effect of the present invention:
1. signal processing unit has two parts, can handle electronic type engine oil pressure pickup and mechanical type engine oil pressure pickup respectively, promptly utilizes a device can detect dissimilar engine oil pressure pickups, and is convenient and practical.
2. pick-up unit uses pressurized air in the tire as detecting source of the gas, can use battery as power supply, does not need miscellaneous equipment, makes easy to processly, with low cost, easy to use, can satisfy working environment requirements such as field.
3. when utilizing draft tube fifth wheel tyre valve, pressurized air is through entering pressure chamber, and mechanical compression table and voltage table indication should be risen synchronously, according to two list index indicate whether can judge synchronously whether sensor normal.
4. apparatus of the present invention can also be used as tire pressure gauge, are widely used.
5. utilize contrive equipment to detect the method for engine oil pressure pickup, can judge fast, save time, improved work efficiency.
(4) description of drawings
Fig. 1 is the structural representation of the selected embodiment of the present invention.
The circuit diagram that the apparatus of the present invention of utilizing Fig. 2 detect.
Fig. 3 apparatus of the present invention schematic appearance.
Fig. 4 is the structural representation of restricting element.
1 housing among the figure, 2 draft tube, 3 restricting elements, 4 valve connectors, 5 engine oil pressure pickups, 5-1 electronic type engine oil pressure pickup, 5-2 mechanical type engine oil pressure pickup, 6 mechanical compression tables, 7 signal processing units, 8 voltage tables, 9 low pressure alarming pilot lamp, 10 power supplys, 11 stabilized voltage supplys, 12 constant current sources, 13 second amplifiers, 14 first amplifiers, 15 casings, a throttle orifice, the K selector switch, R resistance, K2 alarm switch.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, following explanation only is the exemplary protection scope of the present invention that do not limit.
Be illustrated in figure 1 as a kind of detection device of engine oil pressure sensor for automobile engine, comprise that an inside is provided with the housing 1 of pressure chamber, described housing 1 one ends are connected with the restricting element 3 of throttle orifice a successively, draft tube 2 and the valve connector 4 that is used to be connected tire, described housing 1 other end is provided with three-way connection, this three-way connection other end connects engine oil pressure pickup to be measured 5 and mechanical compression table 6 respectively, and described engine oil pressure pickup 5 is connected with voltage table 8 by signal processing unit 7 and is used for detecting the low pressure alarming pilot lamp 9 of the built-in low pressure warning switch K2 of electromechanical engine oil pressure pickup.
Described as shown in Figure 2 signal processing unit 7 comprises that the 9V electric battery is as power supply 10,5V stabilized voltage supply 11 that links to each other with power supply and constant current source 12 and first amplifier 14 and second amplifier 13 in parallel with stabilized voltage supply 11, wherein said first amplifier 14 links to each other with stabilized voltage supply 11, be used to connect electronic type engine oil pressure pickup 5-2, second amplifier 13 links to each other with constant current source 12, be used to connect mechanical type engine oil pressure pickup 5-1, and first amplifier 14 and second amplifier, 13 output terminals link to each other with described voltage table 8 by selector switch K, and described low pressure alarming pilot lamp 9 links to each other with stabilized voltage supply 11.
Consider easy to carry as shown in Figure 3, described as shown in Figure 3 housing 1, low pressure alarming pilot lamp 9 and signal processing unit 7 are positioned at a casing 15, described coupling arrangement is positioned at casing 15 sides, and described mechanical compression table 6 and voltage table 8 are positioned at casing 15 surfaces.
A kind of detection method of detected electrons formula engine oil pressure pickup shown in Fig. 1 .2.3 may further comprise the steps:
1) as shown in Figure 1 engine oil pressure pickup to be measured 5 is linked to each other with housing 1;
2) turn on the power switch, and utilize draft tube 2 and valve connector 4 to connect source of the gas, observe the indicating value of mechanical compression table 6 and voltage table 8;
3) coupling arrangement and source of the gas are disconnected, observe the indicating value of mechanical compression table 6 and voltage table 8;
4) when the indicating value of mechanical compression table 6 and voltage table 8 rose synchronously or descends, engine oil pressure pickup was normal, otherwise engine oil pressure pickup has fault.
When said method is used to detect the electromechanical engine oil pressure pickup, also include step: when the pressure in the pressure chamber is lower than alarm pressure, observes low pressure alarming pilot lamp 9 and whether light, judge whether fault of low pressure warning switch K2.
Principle of work of the present invention is:
As shown in Figure 2 when detected electrons formula engine oil pressure pickup 5-2, selector switch K pulled 1 position, 5V stabilized voltage supply 11 is given electronic type engine oil pressure pickup 5-2 to be measured and 14 power supplies of first amplifier simultaneously, one of electronic type engine oil pressure pickup 5-2 to be measured output and the interior gaseous tension corresponding voltage signal of pressure chamber, this voltage signal amplifies after selector switch K delivers to voltage table 8 through first amplifier 14, described voltage table 8 indicates the pressure in the pressure chamber, when the pressure in the pressure chamber changes, the indicating value of voltage table 8 is respective change also, also show the variation of the pressure of pressure chamber in this mechanical compression table 6 that links to each other with pressure chamber simultaneously, when the indicating value of mechanical compression table 6 and voltage table 8 rises synchronously or descends, engine oil pressure pickup is normal, otherwise engine oil pressure pickup has fault;
When detecting mechanical type engine oil pressure pickup 5-1, selector switch K pulled 2 position, 9V power supply 10 is through mechanical type engine oil pressure pickup 5-1 that constant current supply is to be measured of constant current source 12 outputs, the 5V stabilized voltage supply is supplied with second amplifier 13, one of mechanical type engine oil pressure pickup 5-1 to be measured output and the interior corresponding resistance signal R of gaseous tension of pressure chamber
1, the steady current I of constant current source 12 outputs
1, the voltage U of a correspondence of generation on the resistance R of this mechanical type engine oil pressure pickup 5-1
1=I
1* R
1, this voltage signal U
1Amplify after selector switch K delivers to voltage table 8 through second amplifier 13, described voltage table 8 indicates the pressure in the pressure chamber, when the pressure in the pressure chamber changes, the indicating value of voltage table 8 is respective change also, also show the variation of the pressure of pressure chamber in this mechanical compression table 6 that links to each other with pressure chamber simultaneously, when the indicating value of mechanical compression table 6 and voltage table 8 rose synchronously or descends, engine oil pressure pickup was normal, otherwise engine oil pressure pickup has fault; When the pressure in the pressure chamber was lower than the low pressure alarming thresholding pressure of mechanical type engine oil pressure pickup 5-1 to be measured, alarm switch K2 can connect, and low pressure alarming pilot lamp 9 should light, otherwise alarm switch K2 has fault.
Pick-up unit of the present invention can be as tire pressure gauge, when using as tire pressure gauge, the hole of the connection of housing 1 engine oil pressure pickup 5 T-valve to be measured is stopped up with bolt, make pressure chamber air tight, then draft tube 2 is utilized the valve connector to connect 4 to tire valve, and slightly firmly pushed, along with pressurized air slowly enters pressure chamber through throttle orifice a, the indicating value of mechanical compression table 6 slowly increases, and up to no longer rising, this moment, mechanical compression table 6 indicating value was exactly a tire pressure.
Ultimate principle of the present invention has only been explained in above-mentioned explanation; those skilled in the art can make many variations according to prompting; restricting element 3 as shown in Figure 4 can be used the throttling valve belt body; the moulding of casing 15 can be done circular or other shapes; above-mentioned variation belongs to prior art; can not be used for limiting protection scope of the present invention, protection scope of the present invention is as the criterion with claim.
Claims (6)
1. detection device of engine oil pressure sensor for automobile engine, it is characterized in that: comprise that an inside is provided with the housing of pressure chamber (1), described housing (1) one end is connected with the restricting element (3) of throttle orifice (a) successively, coupling arrangement and source of the gas, described housing (1) other end is provided with three-way connection, this three-way connection other end connects engine oil pressure pickup to be measured (5) and mechanical compression table (6) respectively, and described engine oil pressure pickup (5) is connected with voltage table (8) by signal processing unit (7) and is used for detecting the low pressure alarming pilot lamp (9) of the built-in low pressure warning switch K2 of electromechanical engine oil pressure pickup.
2. according to the described detection device of engine oil pressure sensor for automobile engine of claim 1, it is characterized in that: described signal processing unit (7) comprises power supply (10), stabilized voltage supply that links to each other with power supply (11) and constant current source (12), with first amplifier (14) and second amplifier (13) parallel with one another, wherein said first amplifier (14) links to each other with stabilized voltage supply (11), be used to connect electronic type engine oil pressure pickup (5-2), electromechanical engine oil pressure pickup (5-1) links to each other with constant current source (12), second amplifier (13) links to each other with stabilized voltage supply (11), be used to connect electromechanical engine oil pressure pickup (5-1), and first amplifier (14) and second amplifier (13) output terminal link to each other with described voltage table (8) by selector switch K, and described low pressure alarming pilot lamp (9) links to each other with stabilized voltage supply (11).
3. according to the described detection device of engine oil pressure sensor for automobile engine of claim 1, it is characterized in that: described coupling arrangement comprises draft tube (2) and the valve connector (4) that is used to be connected tire.
4. according to claim 1,2 or 3 any described detection device of engine oil pressure sensor for automobile engine, it is characterized in that: described housing (1), low pressure alarming pilot lamp (9) and signal processing unit (7) are positioned at a casing (15), described coupling arrangement is positioned at casing (15) side, and described mechanical compression table (6) and voltage table (8) are positioned at casing (15) surface.
5. detection method that is used for engine oil pressure pickup is characterized in that may further comprise the steps:
1) engine oil pressure pickup to be measured (5) is linked to each other with housing (1), and the circuit interface of sensor is connected with the circuit of signal processing unit;
2) turn on the power switch, and utilize coupling arrangement to connect source of the gas, observe mechanical compression table (6) and the indicating value of voltage table (8) and the change procedure of indicating value;
3) coupling arrangement and source of the gas are disconnected, observe mechanical compression table (6) and the indicating value of voltage table (8) and the change procedure of indicating value;
4) when the indicating value of mechanical compression table (6) and voltage table (8) rose synchronously or descends, engine oil pressure pickup was normal, otherwise engine oil pressure pickup has fault.
6. according to the described detection method that is used for engine oil pressure pickup of claim 5, it is characterized in that further comprising the steps of: when detecting the electromechanical engine oil pressure pickup, when the pressure in the pressure chamber is lower than alarm pressure, observe low pressure alarming pilot lamp (9) and whether light, judge whether fault of low pressure warning switch K2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910016659A CN101625276A (en) | 2009-07-01 | 2009-07-01 | Detection device of engine oil pressure sensor for automobile engine and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910016659A CN101625276A (en) | 2009-07-01 | 2009-07-01 | Detection device of engine oil pressure sensor for automobile engine and detection method thereof |
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| CN101625276A true CN101625276A (en) | 2010-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910016659A Pending CN101625276A (en) | 2009-07-01 | 2009-07-01 | Detection device of engine oil pressure sensor for automobile engine and detection method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575467A (en) * | 2013-10-12 | 2014-02-12 | 广西玉柴机器股份有限公司 | Detection harness for electronic oil pressure sensor of engine |
| CN104677547A (en) * | 2013-11-26 | 2015-06-03 | 现代自动车株式会社 | Offset correction method for automobile oil pressure sensor |
| CN105736087A (en) * | 2016-05-05 | 2016-07-06 | 广西玉柴机器股份有限公司 | Oil pressure measuring device |
| CN105823577A (en) * | 2016-03-17 | 2016-08-03 | 沈阳飞机工业（集团）有限公司 | Portable aero engine measuring device and measuring method |
| CN106546381A (en) * | 2015-09-18 | 2017-03-29 | 哈尔滨飞机工业集团有限责任公司 | A kind of fuel pressure gauge exerciser |
-
2009
- 2009-07-01 CN CN200910016659A patent/CN101625276A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575467A (en) * | 2013-10-12 | 2014-02-12 | 广西玉柴机器股份有限公司 | Detection harness for electronic oil pressure sensor of engine |
| CN103575467B (en) * | 2013-10-12 | 2015-07-15 | 广西玉柴机器股份有限公司 | Detection harness for electronic oil pressure sensor of engine |
| CN104677547A (en) * | 2013-11-26 | 2015-06-03 | 现代自动车株式会社 | Offset correction method for automobile oil pressure sensor |
| CN106546381A (en) * | 2015-09-18 | 2017-03-29 | 哈尔滨飞机工业集团有限责任公司 | A kind of fuel pressure gauge exerciser |
| CN105823577A (en) * | 2016-03-17 | 2016-08-03 | 沈阳飞机工业（集团）有限公司 | Portable aero engine measuring device and measuring method |
| CN105736087A (en) * | 2016-05-05 | 2016-07-06 | 广西玉柴机器股份有限公司 | Oil pressure measuring device |
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Open date: 20100113 |