CN104198192A - Testing device of variable valve system and testing method thereof - Google Patents
Testing device of variable valve system and testing method thereof Download PDFInfo
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- CN104198192A CN104198192A CN201410456710.5A CN201410456710A CN104198192A CN 104198192 A CN104198192 A CN 104198192A CN 201410456710 A CN201410456710 A CN 201410456710A CN 104198192 A CN104198192 A CN 104198192A
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Abstract
The invention relates to a testing device of a variable valve system and a testing method thereof. The testing device is characterized in that a valve mechanism driving system is arranged on a platform. A motor is connected with an oil pump, an inlet of the oil pump is connected with a sump, and an outlet of the oil pump is connected with an overflow valve, an energy accumulator and an oil inlet pipe of a solenoid valve in sequence. An overflow port of the overflow valve is communicated with the sump. A first outlet of the solenoid valve is communicated with a hydraulic piston cylinder arranged in a variable valve lifting mechanism, and a second outlet of the solenoid valve is communicated with the sump. The testing device can not only research the law of the impact of key structural parameters of the variable valve system on valve timing but also calibrate and optimize all structural parameters and perform cold running-in tests on key parts so as to ensure work reliability of the parts and provide a convenient and reliable testing platform for the variable valve system.
Description
Technical field
The present invention relates to the proving installation of engine variable-valve system, is the experiment test device of the key structure parameter of variable valve system being demarcated, being optimized and crucial zero device carried out to cold breaking in doing specifically.
Background technology
Chinese patent literature CN201210592547.6(applicant: disclose a kind of " for detection of system and the detection method thereof of the fault of variable air valve lift apparatus " Hyundai automatic vehicle Co., Ltd.), this system comprises, engine, this engine is provided with variable air valve lift apparatus to control the lift of valve; Vibration transducer: the vibration producing when the closure for detection of above-mentioned valve and export corresponding vibration signal; And control section: receive vibration signal, determine the fault of variable air valve lift apparatus according to the vibration signal detecting in predetermined crankangle.
The single vibration signal that this patent produces during only from valve closure is judged variable air valve lift apparatus fault, does not have on the key structure parameter of variable air valve lift apparatus and on affecting aspect valve timing and detects.
Summary of the invention
The proving installation that the object of this invention is to provide a kind of variable valve system, when simulated engine operating mode under camshaft speed specified criteria, control hydraulic fluid pressure to change valve stroke, by sensor, gather valve lift amount, to facilitate, reliably variable valve system to be carried out to experimental test.
The object of the present invention is achieved like this: a kind of proving installation of variable valve system, comprise that data acquisition system (DAS) is connected with electronic control system, valve actuating mechanism drive system is arranged on paralell: motor is connected with oil pump, oil pump import is connected with the oil-out of sump by the road, oil pump outlet by the road in turn with surplus valve, the oil inlet pipe of accumulator and solenoid valve connects, the overflow vent of surplus valve is communicated with sump by the road, solenoid valve is two-position three-way valve, the hydraulic piston cylinder that solenoid valve first outlet makes adjustments valve stroke or cam of camshaft phase place with use in variable air valve lift range mechanism is by the road communicated with, solenoid valve the second outlet is communicated with sump oil return opening through scavenge pipe,
During as simulation hair oil machine operating mode, the frequency modulation motor of camshaft speed connects camshaft through shaft coupling, and frequency modulation motor is arranged on paralell, contacts and the variable air valve lift range mechanism to be tested that moves is fixed on paralell through its cylinder cap with camshaft overhead cam;
Described data acquisition system (DAS) consists of: as the photoelectric encoder that gathers camshaft speed signal, be arranged on camshaft, as the displacement transducer that gathers valve lift amount be arranged on valve or near, temperature sensor and pressure transducer are arranged on solenoid valve oil inlet and oil return pipe.
On the oil inlet pipe of described solenoid valve, be also provided with temperature sensor and pressure transducer.
In described sump, be provided with heating tube.
Before the oil-out of described sump or after oil-out, be provided with oil filter.
Described data acquisition system (DAS) also has data collecting card: the signal output part of described photoelectric encoder, displacement transducer, temperature sensor and pressure transducer is all connected with data collecting card, and the output terminal of data collecting card is connected with the PC in electronic control system.
Another object of the present invention is to provide a kind of method of testing of proving installation of variable valve system.
Another object of the present invention is achieved in that a kind of method of testing of proving installation of variable valve system, and triggering and clock signal by photoelectric encoder as valve stroke realize the collection to valve stroke; By temperature and pressure sensor, realize the monitoring to the temperature and pressure of solenoid valve oil inlet pipe, scavenge pipe; Above signal is sent to the PC of electronic control system by data collecting card, adopt Labview to write software, realize real-time and offline storage, calculating and the analysis of data; By camshaft speed signal acquisition, control sequential, determine steering logic, the control signal of inputting by the PC of electronic control system is controlled the start-up time of solenoid valve and is opened the duration, thereby determine each operating mode Optimal Control data, Optimal Control data are write to the PC of electronic control system, under this situation, variable valve system to be measured is realized to cold breaking in.
Compared with prior art, the invention has the beneficial effects as follows:
1, this device not only can be studied the affect rule of the key structure parameter of newly-designed variable valve system for valve timing, can also demarcate and optimize each values of the structural parameters, and key components and parts is carried out to cold breaking in experiment, guarantee the functional reliability of part.
2, this device valve actuating mechanism drive system (hydraulic system), electronic control system and data acquisition system (DAS) three parts all can be integrated on paralell, thereby provide a convenience, experiment porch reliably for test variable valve system.
3, in this device valve actuating mechanism drive system to the pressure of variable air valve lift range mechanism output adjustable and pressure stability, guaranteed the accuracy of test data.
Feature of the present invention will further be set forth in embodiment.
Accompanying drawing explanation
Fig. 1 is the system schematic of this device.
Fig. 2 is variable air valve lift range mechanism scheme of installation.
Embodiment
This device is mainly comprised of valve actuating mechanism drive system, data acquisition system (DAS) and electronic control system three parts.
In Fig. 1,1-paralell; 2-frequency modulation motor; 3-shaft coupling; 4-camshaft; 5-cylinder cap; 6-variable air valve lift range mechanism; 7-photoelectric encoder; 8-oil filter; 9-solenoid valve; 10-accumulator; 11-surplus valve; 12-oil pump; 13-motor; 14-data acquisition system (DAS); 15-well heater; 16-mailbox; 17-ECU (Electrical Control Unit).Wherein, T is temperature; P is pressure; S is displacement; N is rotating speed.
Referring to Fig. 1, a kind of proving installation of variable valve system, comprise that data acquisition system (DAS) is connected with electronic control system, valve actuating mechanism drive system is arranged on paralell 1: motor is connected with oil pump, oil pump import is connected with the oil-out of sump by the road, oil pump outlet by the road in turn with surplus valve, the oil inlet pipe of accumulator and solenoid valve connects, the overflow vent of surplus valve is communicated with sump by the road, solenoid valve is two-position three-way valve, the hydraulic piston cylinder that solenoid valve first outlet makes adjustments valve stroke or camshaft 4 cam phases with use in variable air valve lift range mechanism 6 is by the road communicated with, solenoid valve the second outlet is communicated with sump oil return opening through scavenge pipe,
During as simulation hair oil machine operating mode, the frequency modulation motor 2 of camshaft speed connects camshaft 4 through shaft coupling 3, frequency modulation motor 2 is arranged on paralell 1, contacts and the variable air valve lift range mechanism to be tested 6 that moves is fixed on paralell through its cylinder cap 5 with camshaft overhead cam;
Described data acquisition system (DAS) consists of: as the photoelectric encoder that gathers camshaft speed signal, be arranged on camshaft, as the displacement transducer that gathers valve lift amount be arranged on valve or near, temperature sensor and pressure transducer are arranged on (referring to Fig. 2) on electromagnetic valve oil return pipe, are also provided with temperature sensor and pressure transducer on the oil inlet pipe of described solenoid valve.In described sump, be provided with heating tube.Before the oil-out of described sump or after oil-out, be provided with oil filter.
Fig. 1 illustrates, and valve actuating mechanism drive system mainly comprises: sump, oil filter, surplus valve, oil pump, motor, accumulator and solenoid valve etc. partly form.The temperature sensor, pressure transducer, displacement transducer and the photoelectric encoder that meet accuracy requirement have been installed on paralell.The Data Collection Software based of test platform exploitation is realized by Labview software programming, can meet data acquisition, data analysis and the testing requirement of test platform.The electronic control system of test platform is controlled the flexible control meeting solenoid valve, realizes the accurate control of oil-feed and oil return.
The concrete principle of valve actuating mechanism drive system is as follows: motor drives oil pump, and hydraulic oil is circulated in test platform pipeline.The hydraulic oil pumping, by oil filter, filters out the impurity in hydraulic oil, enters accumulator.Accumulator is a kind of energy savings device, and this device changes the Wave energy of hydraulic oil into compression energy.When oil pressure is lower, discharge compression energy; When oil pressure is higher, absorb compression energy.Thereby the hydraulic oil that makes to flow in mechanism keeps steady flow, eliminates pressure fluctuation.When the hydraulic oil pressure in accumulator surpasses target charge oil pressure, the overflow vent of surplus valve is opened, and makes hydraulic oil be back to fuel tank, to keep constant pressure.On platform mesohigh oil circuit, high-speed electromagnetic valve is installed, this solenoid valve adopts two-position three-way valve, control hydraulic oil and flow into and flow out hydraulic piston, thereby the oil-feed moment of control variable air valve lift range mechanism, oil inlet quantity, the oil return moment and recirculating oil quantity make it reach the object of controlling valve added lift.The start-up time of solenoid valve is by the phase place that determines that hydraulic oil enters variable air valve lift range mechanism, and the unlatching duration of solenoid valve will determine to enter the oil inlet quantity of variable air valve lift range mechanism, thereby determines the added lift of valve.The rotating speed of camshaft while passing through frequency modulation motor simulated engine operating mode on platform, for it provides power, drives the former lift of valve.Meanwhile, for the normal operating conditions of simulated engine machine oil, heating tube has been installed in sump especially, has been made it always work in the normal oil temperature of engine, guaranteed that its viscosity is unlikely too high.
Described data acquisition system (DAS) also has data collecting card: the signal output part of described photoelectric encoder, displacement transducer, temperature sensor and pressure transducer is all connected with data collecting card, and the output terminal of data collecting card is connected with the PC in electronic control system.
A method of testing for the proving installation of variable valve system, triggering and clock signal by photoelectric encoder as valve stroke, realize the collection to valve stroke; By temperature and pressure sensor, realize the monitoring to the temperature and pressure of solenoid valve oil inlet pipe, scavenge pipe; Above signal is sent to the PC of electronic control system by data collecting card, adopt Labview to write software, realize real-time and offline storage, calculating and the analysis of data; By camshaft speed signal acquisition, control sequential, determine steering logic, the control signal of inputting by the PC of electronic control system is controlled the start-up time of solenoid valve and is opened the duration, thereby determine each operating mode Optimal Control data, Optimal Control data are write to the PC of electronic control system, under this situation, variable valve system to be measured is realized to cold breaking in.
Claims (6)
1. the proving installation of a variable valve system, comprise, data acquisition system (DAS) is connected with electronic control system, it is characterized in that, it is upper that valve actuating mechanism drive system is arranged on paralell (1): motor is connected with oil pump, oil pump import is connected with the oil-out of sump by the road, oil pump outlet by the road in turn with surplus valve, the oil inlet pipe of accumulator and solenoid valve connects, the overflow vent of surplus valve is communicated with sump by the road, solenoid valve is two-position three-way valve, the hydraulic piston cylinder that solenoid valve first outlet makes adjustments valve stroke or camshaft (4) cam phase with use in variable air valve lift range mechanism (6) is by the road communicated with, solenoid valve the second outlet is communicated with sump oil return opening through scavenge pipe,
During as simulation hair oil machine operating mode, the frequency modulation motor (2) of camshaft speed connects camshaft (4) through shaft coupling (3), it is upper that frequency modulation motor (2) is arranged on paralell (1), contacts and the variable air valve lift range mechanism to be tested (6) that moves is fixed on paralell through its cylinder cap (5) with cam on camshaft;
Described data acquisition system (DAS) consists of: as the photoelectric encoder that gathers camshaft speed signal, be arranged on camshaft, as the displacement transducer that gathers valve lift amount be arranged on valve or near, temperature sensor and pressure transducer are arranged on solenoid valve oil inlet and oil return pipe.
2. the proving installation of a kind of variable valve system according to claim 1, is characterized in that, is also provided with temperature sensor and pressure transducer on the oil inlet pipe of described solenoid valve.
3. the proving installation of a kind of variable valve system according to claim 1 and 2, is characterized in that, in described sump, is provided with heating tube.
4. the proving installation of a kind of variable valve system according to claim 3, is characterized in that, before the oil-out of described sump or after oil-out, is provided with oil filter.
5. the proving installation of a kind of variable valve system according to claim 4, it is characterized in that, described data acquisition system (DAS) also has data collecting card: the signal output part of described photoelectric encoder, displacement transducer, temperature sensor and pressure transducer is all connected with data collecting card, and the output terminal of data collecting card is connected with the PC in electronic control system.
6. a method of testing for the proving installation of variable valve system as described in claim 1 or 2 or 3 or 4, triggering and clock signal by photoelectric encoder as valve stroke, realize the collection to valve stroke; By temperature and pressure sensor, realize the monitoring to the temperature and pressure of solenoid valve oil inlet pipe, scavenge pipe; Above signal is sent to the PC of electronic control system by data collecting card, adopt Labview to write software, realize real-time and offline storage, calculating and the analysis of data; By camshaft speed signal acquisition, control sequential, determine steering logic, the control signal of inputting by the PC of electronic control system is controlled the start-up time of solenoid valve and is opened the duration, thereby determine each operating mode Optimal Control data, Optimal Control data are write to the PC of electronic control system, under this situation, variable valve system to be measured is realized to cold breaking in.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716912A (en) * | 2016-02-01 | 2016-06-29 | 江苏大学 | Diesel engine instantaneous-phase adjustable combustion gas sampling device and method |
| CN106092586A (en) * | 2016-08-04 | 2016-11-09 | 浙江康和机械科技有限公司 | A kind of engine brake functional trial platform and test method |
| CN106813924A (en) * | 2016-12-08 | 2017-06-09 | 中国北方发动机研究所(天津) | A kind of behavior of Novel diesel engine valve and cam stress measurement device |
| CN107588958A (en) * | 2017-11-07 | 2018-01-16 | 吴兆阳 | Engine valve actuating mechanism experimental rig |
| CN107907336A (en) * | 2017-11-27 | 2018-04-13 | 宁波市鄞州德来特技术有限公司 | A kind of engine variable-valve timing simulation system and its analogy method |
| CN108106853A (en) * | 2017-12-19 | 2018-06-01 | 杰锋汽车动力***股份有限公司 | A kind of electronic type variable valve timing system device for testing functions and its test method |
| CN108132150A (en) * | 2016-12-01 | 2018-06-08 | 摩托尼科株式会社 | The continuous variable valve of engine opens duration mechanism experimental rig and test method |
| CN109839276A (en) * | 2019-03-25 | 2019-06-04 | 金逍添 | Camshaft of car engine and tappet analogue simulation parameter detection device |
| CN110567698A (en) * | 2019-09-18 | 2019-12-13 | 天津市津聿动力科技有限公司 | Testing device and method for timing and lift measurement of variable valve of engine |
| CN111207927A (en) * | 2018-11-21 | 2020-05-29 | 中国船舶重工集团公司第七一一研究所 | Parameter monitoring device for valve drive mechanism of internal combustion engine and valve drive mechanism |
| CN112213110A (en) * | 2020-09-29 | 2021-01-12 | 上汽通用五菱汽车股份有限公司 | Method and system for measuring phase of driving cam of high-pressure oil pump of gasoline engine and storage medium |
| CN113624502A (en) * | 2021-08-16 | 2021-11-09 | 安徽江淮汽车集团股份有限公司 | Engine valve system test bench and valve mechanism test method |
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| CN204085894U (en) * | 2014-09-09 | 2015-01-07 | 韩志强 | A kind of proving installation of variable valve system |
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| CN101710026A (en) * | 2009-11-17 | 2010-05-19 | 朱留存 | Variable valve timing performance test device of gasoline engine |
| CN101907519A (en) * | 2010-06-30 | 2010-12-08 | 绵阳富临精工机械有限公司 | Engine variable valve timing system performance testboard |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716912A (en) * | 2016-02-01 | 2016-06-29 | 江苏大学 | Diesel engine instantaneous-phase adjustable combustion gas sampling device and method |
| CN106092586A (en) * | 2016-08-04 | 2016-11-09 | 浙江康和机械科技有限公司 | A kind of engine brake functional trial platform and test method |
| CN108132150A (en) * | 2016-12-01 | 2018-06-08 | 摩托尼科株式会社 | The continuous variable valve of engine opens duration mechanism experimental rig and test method |
| CN108132150B (en) * | 2016-12-01 | 2020-03-10 | 摩托尼科株式会社 | Testing device and testing method for continuous variable valve opening duration mechanism of engine |
| CN106813924A (en) * | 2016-12-08 | 2017-06-09 | 中国北方发动机研究所(天津) | A kind of behavior of Novel diesel engine valve and cam stress measurement device |
| CN106813924B (en) * | 2016-12-08 | 2019-05-14 | 中国北方发动机研究所(天津) | A kind of Novel diesel engine valve behavior and cam stress measurement device |
| CN107588958A (en) * | 2017-11-07 | 2018-01-16 | 吴兆阳 | Engine valve actuating mechanism experimental rig |
| CN107907336A (en) * | 2017-11-27 | 2018-04-13 | 宁波市鄞州德来特技术有限公司 | A kind of engine variable-valve timing simulation system and its analogy method |
| CN107907336B (en) * | 2017-11-27 | 2023-11-03 | 宁波市鄞州德来特技术有限公司 | Variable valve timing simulation system and simulation method for engine |
| CN108106853A (en) * | 2017-12-19 | 2018-06-01 | 杰锋汽车动力***股份有限公司 | A kind of electronic type variable valve timing system device for testing functions and its test method |
| CN111207927A (en) * | 2018-11-21 | 2020-05-29 | 中国船舶重工集团公司第七一一研究所 | Parameter monitoring device for valve drive mechanism of internal combustion engine and valve drive mechanism |
| CN109839276A (en) * | 2019-03-25 | 2019-06-04 | 金逍添 | Camshaft of car engine and tappet analogue simulation parameter detection device |
| CN110567698A (en) * | 2019-09-18 | 2019-12-13 | 天津市津聿动力科技有限公司 | Testing device and method for timing and lift measurement of variable valve of engine |
| CN112213110A (en) * | 2020-09-29 | 2021-01-12 | 上汽通用五菱汽车股份有限公司 | Method and system for measuring phase of driving cam of high-pressure oil pump of gasoline engine and storage medium |
| CN113624502A (en) * | 2021-08-16 | 2021-11-09 | 安徽江淮汽车集团股份有限公司 | Engine valve system test bench and valve mechanism test method |
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Effective date of registration: 20160602 Address after: 1, No. 441, No. 4, 610093 floor, No. 1388, Tianfu Road, Chengdu hi tech Zone, Sichuan Applicant after: HAN ZHIQIANG Address before: 610039 Jinniu District, Sichuan, Jin Zhou road, No. 999, No. Applicant before: Han Zhiqiang |
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Application publication date: 20141210 |