CN103759946A - Testing device for testing PTO output capacity of engine - Google Patents
Testing device for testing PTO output capacity of engine Download PDFInfo
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- CN103759946A CN103759946A CN201310755734.6A CN201310755734A CN103759946A CN 103759946 A CN103759946 A CN 103759946A CN 201310755734 A CN201310755734 A CN 201310755734A CN 103759946 A CN103759946 A CN 103759946A
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Abstract
The invention discloses a testing device for testing PTO output capacity of an engine. The testing device for testing the PTO output capacity of the engine comprises a dynamometer connected with the engine, a hydraulic pump is mounted in a PTO output port of the engine, the oil inlet of the hydraulic pump is connected with an oil tank, and a testing assembly used for detecting temperature, oil pressure and flow in a pipeline, a pressure control assembly used for regulating pressure in the pipeline and a cooling assembly used for regulating the temperature in the pipeline are mounted in sequence on the pipeline enabling the oil outlet of the hydraulic pump to be connected with the oil tank. According to the testing device for testing the PTO output capacity of the engine, the outlet pressure of the outlet of the hydraulic pump is regulated to a specified value through a throttle valve, the hydraulic oil pressure detected by a pressure sensor and the flow information detected by a flow sensor, and loading on the engine is achieved. The operation condition of the engine and the outlet pressure and the flow of the hydraulic pump are controlled through the dynamometer. The testing system for verifying the PTO capacity of the engine is high in integration degree, good in generality, capable of being used for verifying the durability and reliability of the engine, and capable of simulating the actual operation conditions of an engine PTO system on engineering machines.
Description
Technical field
The present invention relates to technical field of internal combustion engines, particularly relate to a kind of proving installation of test engine PTO fan-out capability.
Background technology
In technical field of engines, the hydraulic system power of agricultural machinery and engineering machinery provides by the hydraulic pump on engine, along with the increase of car load hydraulic services, to engine PTO(power output) requirement of ability is also more and more higher.And how to detect the PTO ability of engine, thereby to adapt to the hydraulic system power demand of car load factory most important concerning engine to match suitable hydraulic pump.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of by the actual operating mode of simulated engine PTO system in engineering machinery, and then test out the proving installation of the test engine PTO fan-out capability of engine PTO fan-out capability.
The technical scheme that the present invention takes for the technical matters existing in solution known technology is:
A kind of proving installation of test engine PTO fan-out capability, comprise the dynamometer machine being connected with engine, at the PTO of described engine output port, place is provided with hydraulic pump, the oil-in of described hydraulic pump is connected with fuel tank, on the pipeline being connected, is provided with successively at the oil-out of described hydraulic pump with fuel tank:
Test assembly for detection of temperature, oil pressure and flow in pipeline;
For regulating the pressure of pipeline pressure, control assembly;
For regulating the cooling unit of pipeline temperature.
As optimal technical scheme, the present invention has also adopted following technical scheme:
Described test assembly comprises: temperature sensor, pressure transducer and flow sensor.
Described pressure is controlled assembly and is comprised throttling valve and the safety valve being connected in parallel to each other.
Described cooling unit comprises hydraulic oil cooler.
Advantage and good effect that the present invention has are: the top hole pressure that the present invention exports by throttling valve and the detected hydraulic fluid pressure of pressure transducer, the detected flow information of flow sensor and then regulator solution press pump, to specified value, is realized the loading to engine; Control by dynamometer machine to the operating condition of engine and hydraulic pump top hole pressure and flow.This checking engine PTO aptitude tests level of integrated system is high, and versatility is good, can be applicable to verify the durable reliability of engine, can the actual operating mode of simulated engine PTO system in engineering machinery.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1, dynamometer machine; 2, engine; 3, hydraulic pump; 4, test assembly; 5, pressure is controlled assembly; 6, cooling unit; 7, fuel tank; 8, filter cleaner; 9, switch; 10, throttling valve; 11, safety valve.
Embodiment
For further understanding summary of the invention of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of proving installation of test engine PTO fan-out capability, comprise the dynamometer machine 1 being connected with engine 2, at the PTO of engine 2 output port, place is provided with hydraulic pump 3, the oil-in of hydraulic pump 3 is connected with fuel tank 7, on the pipeline being connected, is provided with successively at the oil-out of hydraulic pump 3 with fuel tank 7:
Test assembly 4 for detection of temperature, oil pressure and flow in pipeline;
For regulating the pressure of pipeline pressure, control assembly 5;
For regulating the cooling unit 6 of pipeline temperature.Wherein:
As preferred embodiment: test assembly 4 comprises: temperature sensor, pressure transducer and flow sensor; Pressure is controlled assembly 5 and is comprised throttling valve 10 and the safety valve 11 being connected in parallel to each other; Cooling unit 6 comprises hydraulic oil cooler.
The principle of work of above-mentioned specific embodiment is: the program that is preset with control engine 2 actions in dynamometer machine 1, rotating speed by 1 pair of engine 2 of dynamometer machine is controlled, and then realize the control to hydraulic pump 3 rotating speeds, finally reach the control to hydraulic fluid flow rate and top hole pressure; Now, utilize test assembly 4 to obtain temperature, oil pressure and the flow information in pipeline; According to above-mentioned oil pressure and flow information, the consumed power that calculates hydraulic pump 3 is the PTO output numerical value of engine.In order to reach the effect of simulation car load operating mode, need to, according to the real work situation of engine 2 and hydraulic pump 3, determine test cycle: comprise exporting hydraulic fluid pressure and 3 load times of hydraulic pump under the selection of engine 2 test speeds, load request, hydraulic pump 3 flows, hydraulic pump 3 stress states isoparametric definite.For warranty test is safe and reliable and reach the effect of simulating car load operating mode, preferably hydraulic oil cooler need to keep the temperature of hydraulic oil at 50 ℃ ± 10 ℃.In order to guarantee the real-time monitoring to process of the test engine condition, need pressure, flow and the Temperature numerical of the outlet of Real-Time Monitoring hydraulic pump, as occurred, abnormal change need stop test.
Above embodiments of the invention are had been described in detail, but described content is only preferred embodiment of the present invention, can not be considered to for limiting practical range of the present invention.All equalization variations of doing according to the present patent application scope and improvement etc., within all should still belonging to patent covering scope of the present invention.
Claims (4)
1. the proving installation of a test engine PTO fan-out capability, it is characterized in that: comprise the dynamometer machine being connected with engine, at the PTO of described engine output port, place is provided with hydraulic pump, the oil-in of described hydraulic pump is connected with fuel tank, on the pipeline being connected, is provided with successively at the oil-out of described hydraulic pump with fuel tank:
Test assembly for detection of temperature, oil pressure and flow in pipeline;
For regulating the pressure of pipeline pressure, control assembly;
For regulating the cooling unit of pipeline temperature.
2. the proving installation of test engine PTO fan-out capability according to claim 1, is characterized in that: described test assembly comprises: temperature sensor, pressure transducer and flow sensor.
3. the proving installation of test engine PTO fan-out capability according to claim 2, is characterized in that: described pressure is controlled assembly and comprised throttling valve and the safety valve being connected in parallel to each other.
4. according to the proving installation of the test engine PTO fan-out capability described in claim 1-3 any one, it is characterized in that: described cooling unit comprises hydraulic oil cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755734.6A CN103759946A (en) | 2013-12-30 | 2013-12-30 | Testing device for testing PTO output capacity of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310755734.6A CN103759946A (en) | 2013-12-30 | 2013-12-30 | Testing device for testing PTO output capacity of engine |
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| Publication Number | Publication Date |
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| CN103759946A true CN103759946A (en) | 2014-04-30 |
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| CN201310755734.6A Pending CN103759946A (en) | 2013-12-30 | 2013-12-30 | Testing device for testing PTO output capacity of engine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500469A (en) * | 2015-01-05 | 2015-04-08 | 戴纳派克（中国）压实摊铺设备有限公司 | Engineering machine engine loading system and engineering machine |
| CN106015176A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Verification device for hydraulic transmission system of engine |
| CN110454466A (en) * | 2019-08-26 | 2019-11-15 | 上海理工大学 | Hydrostatic drive system combination property bench and method |
| CN111721537A (en) * | 2020-08-03 | 2020-09-29 | 广西玉柴机器股份有限公司 | Simulation PTO rack test system and test method |
| CN111721537B (en) * | 2020-08-03 | 2024-06-04 | 广西玉柴机器股份有限公司 | PTO rack test system and test method for simulation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500469A (en) * | 2015-01-05 | 2015-04-08 | 戴纳派克（中国）压实摊铺设备有限公司 | Engineering machine engine loading system and engineering machine |
| CN106015176A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Verification device for hydraulic transmission system of engine |
| CN110454466A (en) * | 2019-08-26 | 2019-11-15 | 上海理工大学 | Hydrostatic drive system combination property bench and method |
| CN111721537A (en) * | 2020-08-03 | 2020-09-29 | 广西玉柴机器股份有限公司 | Simulation PTO rack test system and test method |
| CN111721537B (en) * | 2020-08-03 | 2024-06-04 | 广西玉柴机器股份有限公司 | PTO rack test system and test method for simulation |
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Application publication date: 20140430 |