CN2056754U

CN2056754U - General recording pressure gauge of ic engine

Info

Publication number: CN2056754U
Application number: CN 89201977
Authority: CN
Inventors: 马惠生
Original assignee: TRANSPORTATION ENGINEERING COL
Current assignee: TRANSPORTATION ENGINEERING COL
Priority date: 1989-02-25
Filing date: 1989-02-25
Publication date: 1990-05-02

Abstract

The utility model relates to a general recording type pressure gauge of an IC engine, which is an improvement of a recording type pressure gauge of an IC engine, belonging to measuring instruments. The general recording type pressure gauge of an IC engine is characterized in that two springs are arranged inside the gauge, and the springs can realize two states-single action or combined action through a set of simple mechanism. When a single spring acts, the general recording type pressure gauge with small damping is used for measuring the cylinder pressure of a gasoline engine. When the two springs are combined to act, the general recording type pressure gauge with large damping is used for measuring the gas pressure force of the cylinder of a diesel engine. Thus, the utility model obtains the purpose of one gauge with two purposes-for measuring gasoline engines and for measuring diesel engines.

Description

General recording pressure gauge of IC engine

The utility model is the improvement of recording Cylinder Pressure of Internal Combustion Engine table, belongs to surveying instrument.

The Cylinder Pressure of Internal Combustion Engine table of present domestic use is generally the dial type tensimeter, its ultimate principle is: utilize the pressure that the body of calming the anger is arranged of drawing in the cylinder, compress a bourdon tube, drive a pointer by bourdon tube again, press the position range estimation reading of pointer on dial plate then.When its shortcoming was air pressure instability or retaining valve gas leakage, pointer can tremble, and easily causes the reading error.Developed a kind of recoding pressure gauge in the recent period abroad, available pointer writes down measurement data automatically on recording chart, overcome the manometric shortcoming of dial type, has improved measuring accuracy.

But, no matter be dial type tensimeter or recoding pressure gauge, they exist a common shortcoming, promptly all be make by the difference of measurement range gasoline engine with and two kinds of use for diesel engine, both can not be general.

The utility model is at above-mentioned shortcoming, on the basis of recoding pressure gauge, done suitable improvement, developed a kind of universal recording Cylinder Pressure of Internal Combustion Engine table that not only can be used for gasoline engine but also can be used for diesel engine,, reached the dual-purpose purpose of a table to improve universal program.

The drawing explanation:

Fig. 1 is a structural representation of the present invention, is the state of measuring the gasoline engine cylinder pressure shown in the figure;

Fig. 2 is the A-A cut-open view;

Fig. 3 is the B-B cut-open view;

Fig. 4 be C to stretch-out view, show the shape in shape of the mouth as one speaks hole on the spring spool among the figure;

Fig. 5 is used to measure the state of Cylinder Pressure of Diesel Engine for the present invention;

Fig. 6 is the D-D cut-open view;

Fig. 7 is the E-E cut-open view.

Below in conjunction with accompanying drawing, briefly introduce concrete structure of the present utility model and operating principle.

In Fig. 1,1 for adjusting sleeve; 2 is inner spring; 3 is the inner spring packing ring; 4 is outer spring; 5 is spring spool; 6 is the outer spring packing ring; 7 is rotatable washer; 8 is drive pin; 9 is retainer spring; 10 is the center-pole assembly.

During measurement gas pressure, the lower end of spring spool (5) is connected on the air guide element, the body of calming the anger is contacted with the lower surface of center-pole assembly (10), to promote center-pole assembly (10) action.Be with inner spring (2) and outer spring (4) on the center-pole assembly (10), by the boss on the center-pole assembly (10) and inner spring packing ring (3), outer spring packing ring (6), rotatable washer accessories such as (7), the action of center-pole assembly (10) is delivered on inner spring (2) and the outer spring (4).The upper end of these two springs links to each other with pen recorder, has the body of calming the anger to make the pen recorder action by two springs on the center-pole assembly (10), and pressure data is noted.

In order to measure the pressure value of two kinds of different ranges, the utility model spring that current of record formula tensimeter is used is used two springs instead, be inner spring (2) and outer spring (4), and make it to produce two states by the control part: when inner spring (2) single movement (as Fig. 1,2, state shown in 3), be used to measure the gaseous tension of gasoline engine cylinder, this kind operating principle is similar to existing recoding pressure gauge; When inner spring (2) and outer spring (4) teamwork (as Fig. 5, state shown in 6,7), be used to measure the gaseous tension of cylinder of diesel engine, this kind operating principle is inventive point of the present utility model.

Before introducing above-mentioned two kinds of operating states, introduce the structure of relevant part earlier.Have on the center-pole assembly (10) two symmetries, the transversal section is fan-shaped boss (boss also can be other shape), boss axially divides upper and lower two sections, is illustrated as four, but also polylith, hypomere boss, epimere boss as seen from Figure 3 as seen from Figure 2.Inner spring packing ring (3) sky is enclosed within on the center-pole assembly (10), relies on epimere boss and inner spring (2) and center-pole assembly (10) axial location.Two sector notch are arranged on the endoporus of rotatable washer (7), (see figure 3) matches with boss, rotatable washer (7) sky is enclosed within that (this section is the garden cylindricality between two sections boss of center-pole assembly (10), see Fig. 3), rely on endoporus shoulder, outer spring packing ring (6) and the outer spring (4) of spring spool (5) to go up axial location at center-pole assembly (10).The outside surface of adjusting sleeve (1) has annular knurl, but clockwise direction turns 90 °, produces relative motion with spring spool (5).Adjust in the sleeve (1) drive pin with threaded connection (8) is arranged, the Jiong type hole (see figure 4) that drive pin (8) can pass on the spring spool (5) reaches in the detent of rotatable washer (7), for making things convenient for process and assemble, groove is made four, one of actual use.Shown in Figure 1, be the right positions of drive pin (8) at groove.As Fig. 1, Fig. 2 and shown in Figure 3, bottom fan-shaped bump on the center-pole assembly (10) can freely pass through rotatable washer (7), and therefore, inner spring (2) works separately and outer spring (4) is inoperative, because the damping of inner spring (2) is less, so be used to measure the pressure of gasoline engine cylinder.When adjusting sleeve (1) when clockwise direction is rotated 90 °, drive pin (8) rotates 90 ° along the n-type groove on the spring spool (5) thereupon, and stirs rotatable washer (7), makes it also to rotate 90 °, becomes state shown in Figure 5.At this moment, the fan-shaped boss in the bottom of center-pole assembly (10) promotes rotatable washer (7), outer spring packing ring (6) and outer spring (4), make inner spring (2) and outer spring (4) move (seeing Fig. 6 and Fig. 7) simultaneously, because damping is bigger, so can be used for measuring the pressure of gas in the cylinder of diesel engine.

Fig. 4 is the stretch-out view in the Jiong type hole on the spring spool (5), the vertical hole of and arranged on left and right sides in Jiong type hole be separated by on spring spool (5) 90 ° (referring to Fig. 7).Retainer spring (9) is in compressive state all the time, and an one effect is: give to adjust sleeve (1) with downward thrust, make the drive pin (8) can be in the minimum point location in the vertical hole of and arranged on left and right sides in Jiong type hole.Another effect is need turn when adjusting sleeve (1), lifts on it earlier, and retainer spring (9) pressurized, drive pin (8) promptly leaves the extreme lower position in vertical hole, both sides, Jiong type hole and moves freely in lateral aperture.

Above-mentioned each figure and explanation thereof have provided embodiment of the present utility model.

Claims

1, a kind of recording Cylinder Pressure of Internal Combustion Engine table, it is characterized in that showing body by following main parts size, adjust sleeve (1), inner spring (2), inner spring packing ring (3), outer spring (4), spring spool (5), outer spring packing ring (6), rotatable washer (7), drive pin (8), retainer spring (9) and center-pole assembly (10) and form.

2, as the said tensimeter of claim 1, it is characterized in that having on the center-pole assembly (10) two sections boss boss sections to can be fan-shaped or other shape, quantity can be two or more.

3,, it is characterized in that a Jiong shape hole is arranged on the spring spool (5) as the said tensimeter of claim 1.

4,, it is characterized in that having on the rotatable washer (7) and drive pin (8) locating slot that cooperate, radial location as the said tensimeter of claim 1.The endoporus of rotatable washer (7) is carved with the groove that boss can be freely through, profile matches with boss on the center-pole assembly (10).

5,, it is characterized in that adjusting sleeve (1) appearance and be carved with annular knurl as the said tensimeter of claim 1.