CN202582899U - Crankcase ventilation system of diesel engine experimental station - Google Patents

Crankcase ventilation system of diesel engine experimental station Download PDF

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Publication number
CN202582899U
CN202582899U CN 201220122391 CN201220122391U CN202582899U CN 202582899 U CN202582899 U CN 202582899U CN 201220122391 CN201220122391 CN 201220122391 CN 201220122391 U CN201220122391 U CN 201220122391U CN 202582899 U CN202582899 U CN 202582899U
Authority
CN
China
Prior art keywords
diesel engine
crankcase
pressure
flowmeter
crankcase ventilation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220122391
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Chinese (zh)
Inventor
蒋慧兰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CRRC Qishuyan Co Ltd
Original Assignee
CRRC Qishuyan Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CRRC Qishuyan Co Ltd filed Critical CRRC Qishuyan Co Ltd
Priority to CN 201220122391 priority Critical patent/CN202582899U/en
Application granted granted Critical
Publication of CN202582899U publication Critical patent/CN202582899U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to the technical field of internal combustion locomotive experimental equipment, in particular to a crankcase ventilation system of a diesel engine experimental station, wherein the crankcase ventilation system comprises a variable frequency controller, a vacuum pump, a flowmeter, a pressure gauge, a coalescent filter and a pressure sensor; the variable frequency controller is connected onto the vacuum pump; the vacuum pump is branched into a suction pipeline and an exhaust pipeline; the suction pipeline is connected with the flowmeter and the pressure gauge in series and connected to a ventilation hole of the crankcase of a diesel engine; the exhaust pipeline is connected to an exhaust chimney and respectively connected with the ventilation hole of the crankcase and the exhust chimney of the diesel engine through pipelines; and the variable frequency controller is used for automatically adjusting pressure in the crankcase into pressure required for working, so that the crankcase ventilation system of the diesel engine experimental station disclosed by the utility model satisfies requirements of performance experiments of the diesel engine and is convenient and reliable to operate.

Description

Diesel engine testing station crankcase ventilation system
Technical field
The utility model relates to diesel locomotive testing equipment technical field, especially a kind of diesel engine testing station crankcase ventilation system.
Background technology
Before dispatching from the factory, the diesel engine of diesel locomotive all to pass through detection; Generally all being installed in special testing station tests; Air pressure adjustment equipment is not set in the existing testing station; Can only adapt to working environment is the diesel engine crankcase testing requirements of normal atmosphere (An), and is the diesel engine crankcase of negative pressure for working environment, can't satisfy testing requirements.
The utility model content
Do not have air pressure adjustment equipment in order to overcome existing testing station, can't satisfy the deficiency of negative pressure crankcase testing requirements, the utility model provides a kind of diesel engine testing station crankcase ventilation system.
The utility model solves the technical scheme that its technical matters adopted: a kind of diesel engine testing station crankcase ventilation system; Comprise frequency-variable controller, vacuum pump, flowmeter, pressure gauge, coalescent filter and pressure transducer, frequency-variable controller is connected on the vacuum pump, and vacuum pump is told an exhaust pipe and a gas exhaust piping; Exhaust pipe is connected with flowmeter, pressure gauge; Be connected to the diesel engine crankcase ventilating opening, gas exhaust piping is connected to the diesel exhaust gas chimney, tells an induction pipeline between flowmeter and the pressure gauge; Induction tube route coalescent filter and pressure transducer are in series, and are connected on the diesel engine silencer.
According to another embodiment of the utility model, further comprise being connected with telepilot on the frequency-variable controller.
According to another embodiment of the utility model, further comprise pressure reduction Linear Control appearance of parallel connection on the flowmeter.
According to another embodiment of the utility model, the pipeline that further comprises the flowmeter two ends is a straight tube.
According to another embodiment of the utility model, comprise that further gas exhaust piping is provided with unwatering pump.
The beneficial effect of the utility model is; Be connected with gas shaft with the crankcase ventilation mouth of diesel engine respectively through pipeline, frequency-variable controller is adjusted to the air pressure of need of work automatically according to the air pressure in the crankcase; Thereby satisfy the requirement of diesel engine performance test, easy to operate, reliable.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the structural representation of the utility model.
1. frequency-variable controllers among the figure, 2. vacuum pump, 3. flowmeter, 4. pressure gauge, 5. coalescent filter, 6. pressure transducer, 7. telepilot, 8. pressure reduction Linear Control appearance, 9. unwatering pump, 11. exhaust pipes, 22. gas exhaust pipings, 33. induction pipelines.
Embodiment
Like Fig. 1 is the structural representation of the utility model, and a kind of diesel engine testing station crankcase ventilation system comprises frequency-variable controller 1, vacuum pump 2, flowmeter 3, pressure gauge 4, coalescent filter 5 and pressure transducer 6; Frequency-variable controller 1 is connected on the vacuum pump 2; Vacuum pump 2 is told an exhaust pipe 11 and a gas exhaust piping 22, and exhaust pipe 11 is connected with flowmeter 3, pressure gauge 4, is connected to the diesel engine crankcase ventilating opening; Gas exhaust piping 22 is connected to the diesel exhaust gas chimney; Tell an induction pipeline 33 between flowmeter 3 and the pressure gauge 4, induction pipeline 33 is in series by coalescent filter 5 and pressure transducer 6, is connected on the diesel engine silencer.Be connected with telepilot 7 on the frequency-variable controller 1.Pressure reduction Linear Control appearance 8 of parallel connection on the flowmeter 3.The pipeline at flowmeter 3 two ends is a straight tube.Gas exhaust piping 22 is provided with unwatering pump 9, and unwatering pump 9 is arranged on the lowest part of whole system.
In EVO16 diesel engine when work,, crankcase need keep negative pressure (51 millimeter of water ∽-178 millimeter of water), when diesel engine crankcase pressure not in above-mentioned scope, diesel engine is gently then shut down, heavy then blast, this force value is the important indicator of diesel engine when working.And the general pressure of crankcase is produced by air and steam jointly, if pressure is at that time mainly produced by the vent air of crankcase, this pressure is lower than the air pressure of surrounding environment so; Be negative pressure, if pressure is at that time mainly produced by the fuel oil of crankcase or lubricating oil steam, the air pressure of the projecting environment of this pressure so; Be malleation; At this moment, external force must be provided, forcing crankcase pressure is negative value.This diesel engine testing station crankcase ventilation system designs for head it off just; When diesel engine is tested; The exhaust pipe 11 of vacuum pump 2, join with the diesel engine crankcase ventilating opening; Because crankcase working temperature high (650 ℃) adopts ventilating opening superhigh temperature sealed pressure pad so connect the place of compressing, gas is difficult for overflowing; Pressure reduction Linear Control appearance 8 is connected in parallel on the flowmeter 3, and may command is through the pressure of flowmeter 3; Gas exhaust piping 22 is discharged gas through the diesel exhaust gas chimney; Tell an induction pipeline 33 between flowmeter 3 and the pressure gauge 4, pressure gauge 4 can detect the pressure through coalescent filter 5 on the induction pipeline 33; When crankcase pressure was negative pressure, pressure transducer 6 fed back to frequency-variable controller 1, and vacuum pump 2 quits work, and when crankcase pressure was malleation, frequency-variable controller 1 control vacuum pump 2 started, and makes it the requirement that ventilation function satisfies crankcase pressure.

Claims (5)

1. diesel engine testing station crankcase ventilation system; It is characterized in that; Comprise frequency-variable controller (1), vacuum pump (2), flowmeter (3), pressure gauge (4), coalescent filter (5) and pressure transducer (6), frequency-variable controller (1) is connected on the vacuum pump (2), and vacuum pump (2) is told an exhaust pipe (11) and a gas exhaust piping (22); Exhaust pipe (11) is connected with flowmeter (3), pressure gauge (4); Be connected to the diesel engine crankcase ventilating opening, gas exhaust piping (22) is connected to the diesel exhaust gas chimney, tells an induction pipeline (33) between flowmeter (3) and the pressure gauge (4); Induction pipeline (33) is in series by coalescent filter (5) and pressure transducer (6), is connected on the diesel engine silencer.
2. diesel engine according to claim 1 testing station crankcase ventilation system is characterized in that, is connected with telepilot (7) on the frequency-variable controller (1).
3. diesel engine according to claim 1 testing station crankcase ventilation system is characterized in that, flowmeter (3) is gone up a parallel connection pressure reduction Linear Control appearance (8).
4. diesel engine according to claim 1 testing station crankcase ventilation system is characterized in that, the pipeline at flowmeter (3) two ends is a straight tube.
5. diesel engine according to claim 1 testing station crankcase ventilation system is characterized in that gas exhaust piping (22) is provided with unwatering pump (9).
CN 201220122391 2012-03-28 2012-03-28 Crankcase ventilation system of diesel engine experimental station Expired - Fee Related CN202582899U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220122391 CN202582899U (en) 2012-03-28 2012-03-28 Crankcase ventilation system of diesel engine experimental station

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220122391 CN202582899U (en) 2012-03-28 2012-03-28 Crankcase ventilation system of diesel engine experimental station

Publications (1)

Publication Number Publication Date
CN202582899U true CN202582899U (en) 2012-12-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220122391 Expired - Fee Related CN202582899U (en) 2012-03-28 2012-03-28 Crankcase ventilation system of diesel engine experimental station

Country Status (1)

Country Link
CN (1) CN202582899U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103076179A (en) * 2012-12-28 2013-05-01 重庆长安汽车股份有限公司 Test device and method for testing engine PCV (pressure controlled ventilation) flow through simulating engine state
CN105888773A (en) * 2014-10-31 2016-08-24 卞永平 Crankcase pressure reducing and piston crankshaft lubricating and cooling device and method
CN108729981A (en) * 2018-05-21 2018-11-02 潍柴动力股份有限公司 A kind of exhaust treatment system and processing method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103076179A (en) * 2012-12-28 2013-05-01 重庆长安汽车股份有限公司 Test device and method for testing engine PCV (pressure controlled ventilation) flow through simulating engine state
CN103076179B (en) * 2012-12-28 2016-01-20 重庆长安汽车股份有限公司 A kind of test unit of simulated engine state verification engine PCV flow and method
CN105888773A (en) * 2014-10-31 2016-08-24 卞永平 Crankcase pressure reducing and piston crankshaft lubricating and cooling device and method
CN108729981A (en) * 2018-05-21 2018-11-02 潍柴动力股份有限公司 A kind of exhaust treatment system and processing method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121205

Termination date: 20190328