CN205228827U - A test bench for engine hot running -in - Google Patents
A test bench for engine hot running -in Download PDFInfo
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- CN205228827U CN205228827U CN201520886114.0U CN201520886114U CN205228827U CN 205228827 U CN205228827 U CN 205228827U CN 201520886114 U CN201520886114 U CN 201520886114U CN 205228827 U CN205228827 U CN 205228827U
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Abstract
The utility model relates to an engine test field discloses a test bench for engine hot running -in, and wherein, this test bench includes: support device, this support device include main support and auxiliary stand, engine detachably connect and flexibly support in the main support, the auxiliary stand flexonics in the main support, with the subtest system, this subtest system at least some install in the auxiliary stand, the subtest system including connect in the fuel feed system of the oil inlet of engine, connect in the water inlet of engine and the cooling circulation system of delivery port, connect in the air intake system of air inlet, connect in among the exhaust system of gas vent at least one. The utility model provides a test bench for engine hot running -in through the defect that hot running -in inspection engine appears, adjusts the cooperation relation between each mechanism for the engine provides simulation operating environment in the assembly, make the engine reach the optimum.
Description
Technical field
The utility model relates to Engine Block Test field, particularly, relates to a kind of testing table for engine thermal break-in.
Background technology
Usually, hydraulic engineering, mining, harbour etc. use the plant equipment being provided with engine to carry out operation.When engine breaks down, after repairing, carry out break-in operation with regard to directly returning to install in original plant equipment.But in the process that break-in runs, because the engine after repairing uses, part is new and old to differ, and technology status height is different, and the performance index of mounted engine and parameter error can not adjust in time, and therefore new fault easily appears in engine.When causing engine still to there is fault by certain reason, also to pull down engine and again searching reason and maintenance.This not only delays the use of plant equipment, and increases the maintenance cycle of engine.And the fault of leaving over occurred is difficult to judge, reduces the serviceable life of engine, adds repair rate.
Therefore, need to carry out hot running-in, entrucking again after adjusting to optimum condition to the engine after repairing.
Utility model content
The purpose of this utility model is to provide a kind of testing table for engine thermal break-in, this testing table being used for engine thermal break-in provides dry run environment for engine, check and eliminate the defect that engine occurs in assembling by hot running-in, adjust the matching relationship between each mechanism, make engine reach optimum condition.
To achieve these goals, the utility model provides a kind of testing table for engine thermal break-in, wherein, this testing table comprises: holder device, this holder device comprises main support and auxiliary stand, described engine removably connects and is flexibly supported in described main support, and described auxiliary stand flexibly connects in described main support; And auxiliary testing system, this auxiliary testing system be installed on described auxiliary stand at least partially, described auxiliary testing system comprise the fuel oil supply system of the oil-in being connected to described engine, the water inlet being connected to described engine and water delivering orifice cooling recirculation system, be connected to the air intake opening of described engine gas handling system, be connected to described engine exhausr port exhaust system at least one.
Preferably, multiple pillars that described main support comprises base and upwards extends perpendicular to base, described base comprises the longeron be parallel to each other and the crossbeam be connected between this longeron, the top of described pillar is provided with cushion, and described engine is connected to the top of described pillar through described cushion by removable connector.
Preferably, described crossbeam is set to two and is parallel to each other, and described pillar is set to three, and two pillars in these three pillars are separately positioned on the two ends of crossbeam described in one of them, and another pillar is arranged on the centre position of crossbeam described in another.
Preferably, described auxiliary stand comprises the first auxiliary stand and the second auxiliary stand that flexibly connect respectively in the two ends of described longeron.
Preferably, described auxiliary testing system also comprises instrument panel, this instrument panel is fixed on described first auxiliary stand, and the tachometer gage be provided with for showing described engine speed, described first auxiliary stand is fixed with arrangements for speed regulation for described engine to change the rotating speed of described engine.
Preferably, described fuel oil supply system comprises fluid and is connected to the fuel tank that the fuel filter of described oil-in and fluid are connected to this fuel filter, and described oil-in place is provided with flow detector to detect fuel flow.
Preferably, water-bearing survey device is provided with in described fuel filter to detect the water cut from the fuel oil of described fuel tank.
Preferably, described gas handling system comprises air filter, supercharger and the charge air cooler that fluid successively connects, this charge air cooler fluid is connected to described air intake opening, described air intake opening place is provided with the first temperature-detecting device and the first pressure-detecting device to detect intake air temperature and admission pressure, and described supercharger place is provided with speed detector to obtain the rotating speed of described supercharger.
Preferably, described exhaust system comprises the sound suppressor (44) be connected with described exhausr port fluid, and described exhaust ports is provided with the second temperature-detecting device and the second pressure-detecting device to detect delivery temperature and discharge pressure.
Preferably, described second temperature-detecting device is hand-held infrared thermometer.
Preferably, described cooling recirculation system comprises main water box and secondary water tank, and this main water box and secondary water tank separately fluid are connected to the water inlet of described engine, is provided with condensate tank of dehumidifier to obtain the water level in described secondary water tank in described secondary water tank.
Preferably, described condensate tank of dehumidifier is arranged on the water level upper limit, the lower limit place of described secondary water tank, when the water level in described secondary water tank higher than the described water level upper limit and lower than described water level under in limited time, described condensate tank of dehumidifier sends corresponding alerting signal.
Preferably, described water outlet is provided with the 3rd temperature-detecting device to detect the temperature of described engine inner cooling water.
Pass through technique scheme, the testing table for engine thermal break-in that the utility model provides can stably supporting engines and being connected with reliable between auxiliary testing system in ensureing the process that engine runs at hot running-in, by auxiliary testing system for engine provides the normal running environment of simulation, on this basis, the performance parameter of the engine measured by detection according to the corresponding component of this parameter diagnosis engine or structure, thus can adjust engine targetedly, so that engine is adjusted to optimum condition.
Other features and advantages of the utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 shows the simple schematic diagram that engine is connected to the front view of the testing table according to embodiment of the present utility model;
Fig. 2 shows the simple schematic diagram that engine is connected to the vertical view of the testing table according to embodiment of the present utility model;
Fig. 3 shows the simple schematic diagram of the fuel oil supply system of the testing table according to embodiment of the present utility model;
Fig. 4 shows the simple schematic diagram of the cooling recirculation system of the testing table according to embodiment of the present utility model;
Fig. 5 shows the simple schematic diagram of the inlet and exhaust system of the testing table according to embodiment of the present utility model;
Fig. 6 shows the simple schematic diagram of the electronic system of the testing table according to embodiment of the present utility model.
Description of reference numerals
1 engine; 21 main supports;
211 bases; 212 pillars;
213 cushions; 22 first auxiliary stands;
23 second auxiliary stands; 31 fuel tanks;
32 fuel filters; 41 air filters;
42 superchargers; 43 charge air coolers;
44 sound suppressors; 45 temperature sensors;
46 pressure transducers; 51 main water box;
52 secondary water tanks; 60PC machine;
61 instrument panels;
The A water level upper limit; B water level lower limit.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
According to embodiment of the present utility model, a kind of testing table for engine thermal break-in is provided, wherein, this testing table comprises: holder device, this holder device comprises main support 21 and auxiliary stand, described engine 1 removably connects and is flexibly supported in described main support 21, and described auxiliary stand flexibly connects in described main support 21; And auxiliary testing system, this auxiliary testing system be installed on described auxiliary stand at least partially, described auxiliary testing system comprise the fuel oil supply system of the oil-in being connected to described engine 1, the water inlet being connected to described engine 1 and water delivering orifice cooling recirculation system, be connected to the air intake opening of described engine 1 gas handling system, be connected to described engine 1 exhausr port exhaust system at least one.
Engine 1 after repairing be installed on original equipment run before, first be installed on the holder device of the testing table that the utility model provides, afterwards by auxiliary testing system to engine performance, such as: admission pressure (unit: PSI), discharge pressure (unit: PSI), intake air temperature (unit: DEG C), delivery temperature (unit: DEG C), coolant water temperature (unit: DEG C), rotating speed (unit: rev/min), fuel pressure (unit: PSI), fuel flow (unit: gph) etc., at least one item is wherein tested, judge whether the parts that engine is corresponding exist fault, and according to the installation of fault adjustment engine corresponding component or directly change exist fault or with other underproof parts in part fits gap, thus eliminate engine repair and assembling process in the factor such as mechanical tolerance on fit on the impact of engine performance, adjustment engine reaches optimum condition, the probability that engine after reducing repairing is reprocessed again.
At this, it should be noted that, above-mentioned " flexibly connecting " refers to and allows interconnective component to be subjected to displacement or corner, do not limit distortion in a certain respect, that is allow to occur distortion, wish that it can be out of shape in other words, thus avoid in the process run at engine or reduce the auxiliary stand that causes due to the vibration of engine and the resonance of parts (parts such as secondary water tank, exhaust box that such as hereinafter will describe) that it is installed, thus the connection affected between engine 1 and each parts, such as cause the faults such as air inlet pipeline leakage.
Embodiment of the present utility model is described in detail below in conjunction with Fig. 1 to Fig. 6.
In the embodiment that the utility model provides, main support 21 can have various ways, removably connects and the function of resiliency supported engine 21 can realize it.Such as, as embodiment of using schematic in Fig. 1 and Fig. 2, wherein, multiple pillars 212 that described main support 21 comprises base 211 and upwards extends perpendicular to base, described base 211 comprises the longeron be parallel to each other and the crossbeam be connected between this longeron, the top of described pillar 212 is provided with cushion 213 (such as rubber washer), and described engine 1 is connected to the top of described pillar 212 through described cushion 213 by removable connector (such as bolt).
In above-mentioned embodiment, stable support is provided in order to give engine 1, described crossbeam is set to two and is parallel to each other, described pillar 212 is set to three, two pillars 212 in these three pillars 212 are separately positioned on the two ends of crossbeam described in one of them, and another pillar 212 is arranged on the centre position of crossbeam described in another.In this case, main support 21 can provide firm triangular form supported at three point for engine 1, avoid in the process run at engine, change its position relative to main support 21 due to the vibration of engine self, and then destroy the annexation between the parts in engine 1 and auxiliary testing system.
In actual applications, suitable configuration can be carried out as required in the structure of auxiliary stand and quantity and position, firmly to support some structures in shown auxiliary testing system or parts, such as, in embodiment in fig. 1 and 2, auxiliary stand comprises the first auxiliary stand 22 and the second auxiliary stand 23 flexibly connected respectively in the two ends of described longeron.First auxiliary stand 22 may be used for fixing and supports such as hereinafter by parts such as the sound suppressor 44 mentioned and instrument panels 61.And the second auxiliary stand 23 may be used for fixing and supports the parts such as main water box 51, secondary water tank 52, charge air cooler 43 such as hereinafter will mentioned.
Using the testing table of the above-mentioned embodiment provided according to the utility model to carry out in the process of hot running-in to engine 1, needing adjusting the rotating speed of engine 1 to detect other performance of engine 1 at different rotating speeds.Therefore, in order to show the rotating speed of engine 1 in real time, described auxiliary testing system can also comprise instrument panel 61, this instrument panel 61 to be fixed on described first auxiliary stand 22, and the tachometer gage be provided with for showing described engine speed, described first auxiliary stand 22 is fixed with arrangements for speed regulation (such as accelerator pedal) for described engine 1 to change the rotating speed of described engine 1.
Known based on the above description to holder device, the testing table that the utility model provides can provide good installation foundation for Engine Block Test, before hot running-in test is carried out to engine, engine 1 is installed on main support 21, and auxiliary testing system is connected to the appropriate section of engine 1, afterwards, starting engine, the rotating speed of adjustment engine, test engine 1 to accelerate to rated speed state auxiliary stand in the idling state and from idling mode relative to the displacement of main support 21, thus judge that whether holder device is qualified, namely whether can provide enough " flexibly connecting " thus ensure that engine 1 is connected with effective between auxiliary testing system.And the scope of above-mentioned " displacement " can be determined according to the engine of different model, such as, for idling be 700 revs/min, rated speed is the engine 1 of 2100 revs/min, when engine 1 in the idling state time, the first auxiliary stand 22 and the second auxiliary stand 23 are about ± 3 ㎜ relative to the displacement of main support 21; When engine 1 is under rated speed state, above-mentioned displacement is about ± 5 ㎜; Then illustrate that holder device meets the requirements, can be used in the hot running-in test of ensuing engine 1.Otherwise need adjusting pole device until meet the demands.
It should be noted that at this, for convenience of description, hereinafter mentioned engine is the engine of above-mentioned model, and namely idling is 700 revs/min, and rated speed is 2100 revs/min.
In the embodiment that the utility model provides, fuel oil supply system is used for providing the energy (as gasoline, diesel oil) for engine 1, in order to clean fuel oil is supplied to engine 1, before fuel oil is supplied to engine, can filter fuel oil, therefore, described fuel oil supply system can comprise fluid and be connected to the fuel tank 31 that the fuel filter 32 of described oil-in and fluid are connected to this fuel filter 32, as shown in Figure 3.From the fuel oil of fuel tank 31 through the filtration of fuel filter 32, eliminate the moisture of the wherein overwhelming majority, avoid traditional fuel system (namely directly being pumped in fuel from fuel tank in engine 1 by oil pump) infringement to engine 1 (such as fuel injector).
On this basis, can carry out carrying out hot running-in test to engine, it mainly detects the fuel oil supply system that position is engine 1.Because the structure of engine is comparatively complicated, and between each system, component, all there is direct or indirect contact, therefore, the fault detected is not limited to the fuel oil supply system of engine 1, and the position that fault may occur also may be such as inlet and exhaust system.Whether concrete test mode is: when engine 1 operates with different running speeds, can be that normal value is to judge that the structure of which parts or which position breaks down with reference at least one item in the parameters such as the temperature at the water cut in the fuel flow at the oil-in place of engine 1, fuel pressure, fuel filter 32, oil pump high pressure unloading pipe place.Therefore, described oil-in place is provided with flow detector to detect fuel flow, pressure-detecting device to detect fuel pressure, is provided with water-bearing survey device to detect the water cut from the fuel oil of described fuel tank 31 in described fuel filter 32.Concrete content measurement can with reference to the following stated:
At engine start after 3 minutes, the rotating speed of engine reaches 1800 revs/min, now, is wherein can not have bubble to the requirement of fuel filter 32, otherwise needs to check whether the neck ring of such as fuel filter 32 is not tightened or whether O-ring seal damages.In addition, neck ring loosen or O-ring seal damage engine also can be caused to occur exhaust is emitted white cigarette, the fault such as to be blown out.When guaranteeing that fuel filter 32 meets the demands, the temperature at oil pump high pressure unloading pipe place can be checked (under normal circumstances by serviceability temperature pick-up unit (the hand-held infrared thermometer such as hereinafter also will used), temperature is herein 40 ~ 60 DEG C), if the temperature recorded is higher than 90 DEG C, then illustrate that open circuit fault appears in the circuit that fuel pump actuator occurs Block failure or is connected to fuel pump actuator.Reason is: fuel pump actuator controls the amount of fuel entering engine 1, when line broken circuit, oil pump feed amount reaches maximal value, fuel pressure more than 28000PSI, now unnecessary fuel oil by the unloader above fuel pump through off-load pipe and three-way connecting block oil return in fuel tank 31.So off-load pipe place occurs higher than 90 DEG C.
After above-mentioned parameter is normal, the rotating speed of engine 1 is adjusted in the scope of 700 ~ 2100 revs/min, if the fuel flow recorded is 10 ~ 35gph, fuel pressure is 9400 ~ 17400PSI and the acceleration transition of engine 1 is steady, quick, then illustrate that the fuel oil supply system of engine 1 is normal.Otherwise illustrate that engine 1 has problems in maintenance, it is embodied in: such as, fuel filter 32 blocks, fuel oil impure (as excessive etc. containing wax, impurity) etc.More specifically illustrate: fuel pressure corresponding when the fuel pressure corresponding when to adjust the rotating speed of engine 1 be idling mode is rated speed state lower than the rotating speed of 6500PSI, adjustment engine 1, lower than 12000PSI, can determine that the fuel injector of engine 1 occurs that inter deterioration leaks thus the fault causing fuel pressure to lose.
In addition, when the water cut in fuel filter 32 is more than 5%, or, during connection line generation open circuit between fuel filter 32 and water-bearing survey device, water-bearing survey device can send alerting signal, this alerting signal is passed to warning device (the such as pilot lamp such as arranged on the dash panel, when this pilot lamp is shown in red, for reporting to the police), thus according to this alerting signal, staff can judge that the water filtered in fuel filter 32 needs cleaning or changes fuel filter 32, or overhaul above-mentioned circuit.
In the embodiment that the utility model provides, gas handling system is used for providing pressurized air for engine, in order to realize this object, described gas handling system comprises air filter 41, supercharger 42 and the charge air cooler 43 that fluid successively connects, this charge air cooler 43 fluid is connected to described air intake opening, as shown in Figure 5.Described air intake opening place is provided with the first temperature-detecting device and the first pressure-detecting device to detect intake air temperature and admission pressure, and described supercharger 42 place is provided with speed detector to obtain the rotating speed of described supercharger 42.
On this basis, can carry out hot running-in test to engine, it mainly detects the gas handling system that position is engine 1, but is not limited to gas handling system.Whether concrete test mode is: when engine 1 operates with different running speeds, can be that normal value is to judge that the structure of which parts or which position breaks down with reference at least one item in the parameters such as the admission pressure of the air intake opening of engine 1, intake air temperature, supercharger speed.Concrete content measurement can with reference to the following stated:
When engine 1 runs well, under normal circumstances, the rotating speed of supercharger 42 should be 8000 ~ 30000 revs/min, otherwise, the air valve tightness existing problems of engine 1 are described, or supercharger 42 is defective.When by the adjustment of rotational speed of engine to 2000 ± 100 revs/min time, if the rotating speed of supercharger 42 is lower than 26000 revs/min, then illustrate that fuel injector breaks down, or fuel pressure pick-up unit breaks down.Reason is: fuel pressure pick-up unit detects fuel pump output pressure, when supercharger 42 rotating speed being detected lower than 26000 revs/min, needs to reduce fuel delivery; Easily there is fuel pressure to leak when oil-fuel injector needle-valve weares and teares, the rotating speed of engine 1 will drop to 2000 ± 100 revs/min or lower, the rotating speed of engine 1 declines and the cylinder displacement of engine 1 will inevitably be caused to reduce, therefore, the impulsive force of impacting the impeller of supercharger 42 reduces, and the rotating speed of supercharger 32 drops to 26000 revs/min or lower thereupon.
When adjustment engine 1 is idling mode, under normal circumstances, admission pressure should be-0.2inHg (reason is: in theory, and engine in the idling state cylinder air pressure is less than atmospheric pressure); When to adjust engine 1 be rated speed state, under normal circumstances, admission pressure should be 6.8 ~ 15inHg (reason is: supercharger speed increase during high engine speeds running, thus brings up to 6.8 ~ 15inHg by by the pressure of air compressed).When detected admission pressure is less than the scope of above-mentioned normal value, illustrate that supercharger 42 rotating speed is inadequate, or between charge air cooler 43 and connecting line, have damaged leakage, or the pressure-detecting device at air intake opening place damages, at this moment need to take corresponding solution, such as: detect supercharger speed or change supercharger, the charge air cooler 43 changing damage and pipeline, replacing pressure-detecting device; When detected admission pressure is greater than the scope of above-mentioned normal value, illustrate that engine 1 exists valve sealing imprecision and causes that high-temp waste gas is counter has leaked into air intake opening place, thus cause inlet pressure to increase, now, need to change valve seal to fix a breakdown.
When admission pressure is normal, the harmony experiment of each cylinder can be carried out.Particularly, fuel flow (such as: the fuel actuator (adjustment of pulse aperture) by operation oil pump) can be adjusted, to reach the optimum matching (air-fuel ratio) of air in idling and nominal speed range and fuel oil, meet the harmony experiment of each cylinder.In this process, need to avoid the phenomenon that each cylinder fuel feeding inequality occurs, thus cause engine 1 to operate instability, or there is air and fuel oil under different rotating speeds to lack of proper care the situation causing engine to arrange blue smoke (fuel feeding is few, air inlet is many) or black smoke (fuel feeding is many, air inlet is few), this can make the temperature of engine 1 raise, power drop.
In the embodiment that the utility model provides, exhaust system is used for the waste gas in engine operation process to discharge, and in order to realize this object, described exhaust system comprises the sound suppressor 44 be connected with described exhausr port fluid, as shown in Figure 5.Described exhaust ports is provided with the second temperature-detecting device (can be such as infrared thermometer) and the second pressure-detecting device to detect delivery temperature and discharge pressure.It should be noted that at this, the exhausr port of engine 1 is connected to above-mentioned supercharger 42, and sound suppressor 44 is connected to supercharger 42 by pipeline, and this is technological means usual in prior art, and in this not go into detail.
On this basis, can carry out hot running-in test to engine 1, it mainly detects the exhaust system that position is engine 1, but is not limited to exhaust system.Whether concrete test mode is: when engine operates with different running speeds, can be that normal value is to judge that the structure of which parts or which position breaks down with reference at least one item in the parameters such as the discharge pressure of the exhausr port of engine 1, delivery temperature, supercharger speed.Concrete content measurement can with reference to the following stated:
After engine 1 overhaul, piston ring and the non-break-in of cylinder wall good, also there is mismachining tolerance and the rough surface of material between them.Therefore, in the idling state, lubricating oil can burn from scurrying between piston ring and casing wall firing chamber engine, so the waste gas of discharging is slight blue smoke; The rotating speed of adjustment engine 1, such as, the rotating speed of engine accelerates to 1800 revs/min, in this process, along with the temperature of engine 1 raises gradually, the lubricating oil scurrying into firing chamber also gradually burned fall, engine speed raises, and mechanical load increases, and the waste gas of now discharging is slight black smoke; When the rotating speed adjusting engine is maximum speed (2300 revs/min), the temperature of engine 1 is elevated to optimum condition, and now oil inflame is the most complete, so, almost cannot see cigarette in the waste gas of discharge.Can determine that the related system (at least comprising exhaust system) of engine is good thus, this situation can meet idle running and the speed characteristic experiment of engine.
Adjustment engine is rated speed state, in this state, hand-held infrared thermometer is used to record the Tail Pipe Temperature of each head exhaust cast iron interface manifold central authorities between 150 ~ 280 DEG C, illustrate that at least exhaust system of engine does not exist fault, in this case can the acceleration of test engine, be specially: when maximum speed that engine 1 is raised speed to from idling only needed for 2 seconds and repeat speed-raising and reduction of speed operate all can complete in 2 seconds time, illustrate engine 1 to add reduction of speed functional.And when measured temperature is lower than 60 DEG C, what was certain was that the fuel injector of engine 1 breaks down.Now, test is needed to be positioned at the Tail Pipe Temperature of the exhaust cast iron interface manifold central authorities of which cylinder lower than 60 DEG C.
When rated engine speed operates, record intake air temperature higher than 140 DEG C, then the fan belt rate of tension existing problems of engine 1 are described, and/or air valve tightness has problems.When the admission pressure recorded is lower than 6.5inHg, engine speed correspondingly declines 200 ~ 300 revs/min, then illustrate that fault is that supercharger 42 sharf rotates ineffective, supercharger need be changed, or, fault is that charge air cooler 43 and corresponding pipeline leak, and need change the pipeline of charge air cooler and damage.
In addition, when engine speed is at 700 ~ 2100 revs/min, supercharger speed is necessary for 8000 ~ 30000 revs/min, otherwise the air valve tightness existing problems of engine 1 are described, or supercharger existing problems.
In the embodiment that the utility model provides, cooling recirculation system is used for cooled engine 1, in order to realize this object, described cooling recirculation system comprises main water box 51 and secondary water tank 52, this main water box 51 and secondary water tank 52 separately fluid are connected to the water inlet of described engine 1, condensate tank of dehumidifier is provided with to obtain the water level in described secondary water tank 52, as shown in Figure 4 in described secondary water tank 52.When main water box 51 water shortage, secondary water tank 52 can supplement the water yield of main water box 51, because lack of water causes engine 1 temperature sharply elevated insult parts when avoiding engine 1 high-load operation.Prescribe a time limit when the water level in secondary water tank 52 exceedes on water level, the gas produced in engine 1 can make the pressure of cooling recirculation system raise; Under the water level in secondary water tank 52 is lower than water level in limited time, engine 1 lack of water, power drop, auto extinguishing.
Described condensate tank of dehumidifier is arranged on the water level upper limit, the lower limit place of described secondary water tank 52, when the water level in described secondary water tank 52 higher than the described water level upper limit and lower than described water level under in limited time, described condensate tank of dehumidifier sends corresponding alerting signal.This alerting signal can inform tester in several ways, and such as, when water level is prescribed a time limit higher than on water level, Level monitor sends alerting signal to the warning device (such as signal lamp or alarm) on instrument panel 61.
Described water outlet is provided with the 3rd temperature-detecting device to detect the temperature of described engine inner cooling water.
On this basis, can carry out hot running-in test to engine, it mainly detects the cooling recirculation system that position is engine 1, but is not limited to cooling recirculation system.Concrete test mode is:
When engine 1 runs well, under normal circumstances, the 3rd temperature-detecting device detects that the water temperature of water outlet should be between 80 ~ 90 DEG C.When it is higher than 98 DEG C, engine main water box 51 and/or secondary water tank 52 whether lack of water need be checked, also may be that fuel injector work is bad causes the fan belt of excessive discharge temperature, engine 1 to damage or lax, induction system line leaks and causes deficiency of air, the factors such as engine valve wearing and tearing gas leakage.
The water level detected when condensate tank of dehumidifier lower than water level under in limited time; (this alerting signal such as can be passed to the warning light that above-mentioned instrument panel is arranged to send alerting signal; illustrate that when this warning light is yellow water level is lower than water level lower limit); the power drop 20% of engine 1 simultaneously; then need stoppage protection in 30 seconds, and suitably moisturizing.
In addition, in the embodiment that the utility model provides, described auxiliary testing system can also comprise electronic system, to make above-mentioned each parameter to concentrate in together display, thus is convenient to analyze, compare.Such as, electronic control module (ECM) can be used to be electrically connected on above-mentioned each pick-up unit and instrument panel 61, to obtain detected corresponding parameter and control in real time, this electronic control module is electrically connected on corresponding operating platform (being such as arranged on the INSITE software on PC 60), thus the fault of diagnosis, eliminating engine 1, store, analyze the historical record of associated engine 1, and revise engine running parameter and some function.
In addition, in the embodiment that the utility model provides, for the ease of startup and the stopping of engine 1, described auxiliary testing system can also comprise start up system, and this start up system comprises power supply (such as accumulator), starter, generator and starting switch.Before carrying out above-mentioned hot running-in test, first need the startability guaranteeing engine 1 good, can start smoothly and stop.Such as, the test of the startability of engine can be carried out by following manner: when starting switch is placed in " startup " position, can starts smoothly in engine 5S, prove that engine start is good; When starting switch is placed in "Off" position, shut down smoothly in 2S, illustrating that supercharger 42 does not reach stall conditions can stall immediately, can not cause continuous air feed, by rapid starting/stopping, complete the test of startup performance of engine.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (13)
1. for a testing table for engine thermal break-in, it is characterized in that, this testing table comprises:
Holder device, this holder device comprises main support (21) and auxiliary stand, described engine (1) removably connects and is flexibly supported in described main support (21), and described auxiliary stand flexibly connects in described main support (21); With
Auxiliary testing system, this auxiliary testing system be installed on described auxiliary stand at least partially, described auxiliary testing system comprise the fuel oil supply system of the oil-in being connected to described engine (1), the water inlet being connected to described engine (1) and water delivering orifice cooling recirculation system, be connected to the air intake opening of described engine (1) gas handling system, be connected to described engine (1) exhausr port exhaust system at least one.
2. the testing table for engine thermal break-in according to claim 1, it is characterized in that, multiple pillars (212) that described main support (21) comprises base (211) and upwards extends perpendicular to base, described base (211) comprises the longeron be parallel to each other and the crossbeam be connected between this longeron, the top of described pillar (212) is provided with cushion (213), and described engine (1) is connected to the top of described pillar (212) through described cushion (213) by removable connector.
3. the testing table for engine thermal break-in according to claim 2, it is characterized in that, described crossbeam is set to two and is parallel to each other, described pillar (212) is set to three, two pillars (212) in these three pillars (212) are separately positioned on the two ends of crossbeam described in one of them, and another pillar (212) is arranged on the centre position of crossbeam described in another.
4. the testing table for engine thermal break-in according to claim 2, is characterized in that, described auxiliary stand comprises the first auxiliary stand (22) and the second auxiliary stand (23) that flexibly connect respectively in the two ends of described longeron.
5. the testing table for engine thermal break-in according to claim 4, it is characterized in that, described auxiliary testing system also comprises instrument panel (61), this instrument panel (61) is fixed on described first auxiliary stand (22), and the tachometer gage be provided with for showing described engine speed, described first auxiliary stand (22) is fixed with arrangements for speed regulation for described engine (1) to change the rotating speed of described engine (1).
6. the testing table for engine thermal break-in according to claim 1, it is characterized in that, described fuel oil supply system comprises fluid and is connected to the fuel tank (31) that the fuel filter (32) of described oil-in and fluid are connected to this fuel filter (32), and described oil-in place is provided with flow detector to detect fuel flow.
7. the testing table for engine thermal break-in according to claim 6, is characterized in that, described fuel filter is provided with water-bearing survey device in (32), to detect the water cut of the fuel oil from described fuel tank (31).
8. the testing table for engine thermal break-in according to claim 1, it is characterized in that, described gas handling system comprises air filter (41), supercharger (42) and the charge air cooler (43) that fluid successively connects, this charge air cooler (43) fluid is connected to described air intake opening, described air intake opening place is provided with the first temperature-detecting device and the first pressure-detecting device to detect intake air temperature and admission pressure, described supercharger (42) place is provided with speed detector, to obtain the rotating speed of described supercharger (42).
9. the testing table for engine thermal break-in according to claim 1, it is characterized in that, described exhaust system comprises the sound suppressor (44) be connected with described exhausr port fluid, described exhaust ports is provided with the second temperature-detecting device and the second pressure-detecting device, to detect delivery temperature and discharge pressure.
10. the testing table for engine thermal break-in according to claim 9, is characterized in that, described second temperature-detecting device is hand-held infrared thermometer.
11. testing tables for engine thermal break-in according to claim 1, it is characterized in that, described cooling recirculation system comprises main water box (51) and secondary water tank (52), this main water box (51) and secondary water tank (52) separately fluid are connected to the water inlet of described engine (1), are provided with condensate tank of dehumidifier to obtain the water level in described secondary water tank (52) in described secondary water tank (52).
12. testing tables for engine thermal break-in according to claim 11, it is characterized in that, described condensate tank of dehumidifier is arranged on the water level upper limit, the lower limit place of described secondary water tank (52), when the water level in described secondary water tank (52) higher than the described water level upper limit and lower than described water level under in limited time, described condensate tank of dehumidifier sends corresponding alerting signal.
13. testing tables for engine thermal break-in according to claim 1, is characterized in that, described water outlet is provided with the 3rd temperature-detecting device to detect the temperature of described engine inner cooling water.
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| CN201520886114.0U CN205228827U (en) | 2015-11-09 | 2015-11-09 | A test bench for engine hot running -in |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223024A (en) * | 2015-11-09 | 2016-01-06 | 攀钢集团矿业有限公司 | For the testing table of engine thermal break-in |
| CN108168899A (en) * | 2017-12-28 | 2018-06-15 | 凯迈(洛阳)机电有限公司 | A kind of motor heating break-in control system |
| CN111122169A (en) * | 2019-12-31 | 2020-05-08 | 盐城诺维特机电科技有限公司 | Engine running-in test bench |
-
2015
- 2015-11-09 CN CN201520886114.0U patent/CN205228827U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223024A (en) * | 2015-11-09 | 2016-01-06 | 攀钢集团矿业有限公司 | For the testing table of engine thermal break-in |
| CN108168899A (en) * | 2017-12-28 | 2018-06-15 | 凯迈(洛阳)机电有限公司 | A kind of motor heating break-in control system |
| CN111122169A (en) * | 2019-12-31 | 2020-05-08 | 盐城诺维特机电科技有限公司 | Engine running-in test bench |
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