CN106761993A

CN106761993A - Reciprocating piston internal combustion engine starts cylinder exhaust valve opening mechanism

Info

Publication number: CN106761993A
Application number: CN201611143953.9A
Authority: CN
Inventors: 肖光宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2017-05-31
Anticipated expiration: 2036-12-02
Also published as: CN106761993B

Abstract

The present invention discloses the opener that a kind of reciprocating piston internal combustion engine starts cylinder air bleeding valve, and the mechanism is mainly made up of valve flashboard, locating rack, rocking bar and bearing plate；When overhead cam or endplay device one (11) and bearing plate (12) be connected rocking arm oppress bearing plate (12) it is descending when, the head that bearing plate (12) oppresses two rocking bar epimeres (9) declines, then two rocking bar hypomeres head (6) are moved upwards, pull valve flashboard (1) to rise through valve cover (2) left and right two ends hook (7) and open exhaust outlet (14), its good effect is, can eliminate and start cylinder lamina tecti thermic load to endanger, and the cylinder side exhaust outlet of starting of the operating mechanism be easy on engine hood panel or system arrangement is widely applied.

Description

Reciprocating piston internal combustion engine starts cylinder exhaust valve opening mechanism

Art

The invention belongs to explosive motor field, and in particular to reciprocating piston internal combustion engine starts the opener of cylinder air bleeding valve.

Background technology

In the patent application 201410208643.5 that will be authorized, one kind has been invented：Elimination is existing to start cylinder exhaust outlet Be arranged on and start cylinder top to cause to start cylinder cap plate thermic load serious, and be arranged on start operating mechanism above cylinder cap plate or System be difficult to arrangement and thermic load harm start cylinder side exhaust outlet and its air bleeding valve (such as Fig. 5 shows).Its air bleeding valve is by valve lock Plate (1), valve cover (2), valve handle (15) are constituted for an entirety；Valve flashboard (1) insertion is connected as by boss socket and exhaust outlet Holistic flashboard activity is intraoral (described in specification of the detail technical features in patent application 201410208643.5 and to have attached Illustrate, be omitted herein), exhaust outlet is opened and closed when flashboard is up and down, valve cover the right and left extension Connection tension spring (5) makes valve flashboard and valve cover by exhaust outlet tight closing, valve handle (15) top and rocking bar by spring tension Mechanism (11) couples；As Fig. 5 shows：A kind of tappet (17) is fixed on the component moved with piston synchronous, is transported with piston synchronous Move and stroke is identical, during descent of piston, the downward drive rocker machine of operating shape of cam work performance is similar on tappet head (16) One rocking arm of structure (11), another being moved upwards with the joining rocking arm in valve handle (15) top pulls air bleeding valve to move upwards, then Exhaust valve opening；Exhaust terminates, and the tension spring (5) fixed by lower end makes exhaust valve closure, gas extraction system recover origin-location.

There is following defect and weak point in the technical scheme that air bleeding valve is opened in above-mentioned gas extraction system：1. in existing overhead Cam direct drive (compressing) air bleeding valve, cam mechanism are located at below endplay device (as Fig. 1,2 show), downwards-placed cam mechanism When tappet head drives up endplay device rocking arm (being connected the corresponding rocking arm of rocking arm with air bleeding valve), air bleeding valve is opened Pressure is identical with the direction of tension spring power, i.e., the direction with exhaust valve closure is identical, then air bleeding valve can not be opened.Thus, on The existing cylinder side exhaust technique scheme of starting with notable good effect is stated to cannot get universal widely applying.2. it is above-mentioned existing The tappet head (16) of fixed tappet (17) is that air bleeding valve is opened by drive rocker mechanism down, with piston synchronous motion and stroke phase Together, then, such as Fig. 5 shows：When tappet head (16) is in lower dead center with piston synchronous, exhaust valve closure, tappet head will the row of unlatching Air valve, must upwards move one section of distance of piston stroke in existing position, then down return could open air bleeding valve；When low speed hair When motivation piston stroke is more long, the up and down distance of tappet head (16) increases therewith, must take substantial amounts of engine hood panel On space, engine volume is accordingly increased.Above-mentioned defect and weak point, causes starting with great good effect The technical scheme of cylinder side exhaust outlet can only be only limitted to be applied in short stroke high speed engine, also seriously limit to side exhaust outlet general Apply everywhere, so that its good effect can not be played widely.

The content of the invention

In order to overcome the above-mentioned existing defect and weak point for starting cylinder side exhaust outlet exhaust valve opening technology, widely send out The good effect of the dynamic cylinder side exhaust outlet of volatilization, using following technical scheme, has invented a kind of cylinder side exhaust outlet air bleeding valve that starts Opener.

One kind starts cylinder exhaust valve opening mechanism, mainly by air bleeding valve, locating rack, rocking bar, bearing plate, tension spring structure Into, it is characterised in that：By valve flashboard (1) and valve cover (2) for an overall structure is constituted, valve flashboard is filled the air bleeding valve in consistent manner Fit over by intraoral, valve cover (2) the right and left extension that starts cylinder boss socket and exhaust outlet to form holistic flashboard activity Couple the tension spring (5) that lower end is fixed below point, hook (7) is made above；The locating rack, by stand (4), front and rear horizontal stroke Plate (8), locating dowel (10) are monolithically fabricated for one, the middle setting rocker shaft (13) of front and rear transverse slat (9) top, front and rear transverse slat top Left and right two ends make the locating dowel (10) of bearing plate (12)；The rocking bar, two rocking bars share rocker shaft (13), two rocking bar hypomeres Head (9) couples the hook (7) that valve cover (2) the right and left extension is made above respectively；Bearing plate (12) corner Location hole corresponding with front and rear transverse slat upper positioning column (10) is made respectively, and bearing plate location hole is shaken through locating dowel bonnet two In the head of bar epimere (9)；When with bearing plate above joining cam or endplay device (11) rocking arm oppress bearing plate (12) when moving downward, the head (6) of two rocking bar hypomeres affects the associated hook (7) for connecing air bleeding valve is moved upwards, beats Begin to rehearse gas port (14)；After starting cylinder exhaust work to terminate, the pressure that bearing plate (12) bears above disappears, tension spring (5) Pulling force makes exhaust valve closure, gas extraction system recover state during exhaust valve closure.

A kind of exhaust valve opening mechanism described above, it is characterised in that：The stand (4) of the locating rack is a quadrilateral frame Frame, the height of the right and left with start the highly identical of cylinder boss (3), framework inner edge coincide with cylinder boss outside is started, closely Be sleeved on and start on cylinder boss (3)；Transverse slat (8) before and after described, is extended vertically upwards by both sides before and after stand and is formed, described Bearing plate locating dowel (10) on front and rear transverse slat, or locating dowel (10) is first made, then it is fixedly connected respectively in front and rear transverse slat (8) On, or directly made from front and rear transverse slat (8).

Good effect

Due to " one kind starts cylinder exhaust valve opening mechanism " of the invention, existing external tensile force is used by preceding [0002] section is described Open air bleeding valve to change into ambient pressure unlatching air bleeding valve, enable to start cylinder side exhaust outlet existing with notable good effect There are overhead cam, conventional tappet to obtain generally applying extensively when driving up endplay device, fully played hair The good effect of dynamic cylinder side exhaust outlet, has significant progressive and good effect relative to the prior art.

[0002] section prior art before being substituted with " one kind starts cylinder exhaust valve opening mechanism " of the invention, then can keep away Exempt from the prior art and apply the defect that substantial amounts of increase engine volume is caused in low speed engine.

Brief description of the drawings

Fig. 1：Remove locating rack stand antetheca and preceding transverse slat view, Fig. 2：Diagram after exhaust valve opening, Fig. 3：Locating rack is bowed View, Fig. 4：Locating rack removes left view after rocking bar, Fig. 5：Background technology diagram.

Specific embodiment

Air bleeding valve such as Fig. 1 is compareed with 5 and shown：The valve handle (15) of prior art air bleeding valve is removed, in valve cover (2) left and right Hook (7) is made above the extension of both sides, the tension spring (5) that the following connection other end is fixed.

Make inner face and start cylinder boss (3) outside match, the height of the right and left with start cylinder boss (3) height phase The front and rear transverse slat (8) that both sides extend vertically upwards and formed before and after same locating rack stand (4) and stand；In two transverse slat tops Between make and first made above the axis hole of rocker shaft (13), two transverse slats or so two ends locating dowel (10) fixation is associated on two transverse slats respectively Or directly made upwards from two transverse slats.Make location hole corresponding with locating dowel (10) in the corner of bearing plate (12).

By two identical rocking bar assemblings on rocker shaft (13), then rocker shaft (13) is assemblied in front and rear two transverse slats top Between in the axis hole made, while hook (7) will be made above two rocking bar hypomeres head (6) and valve cover (2) left and right extension Connection；Bearing plate locating dowel (10) is penetrated on bearing plate (12) in location hole corresponding with locating dowel (10), bearing plate (12) Cover in the head of two rocking bar epimeres (9)；By the associated rocking arm of endplay device (11) or by setting above bearing plate (12) Put the overhead cam direct drive on bearing plate.

Claims

1. a kind of exhaust valve opening mechanism, it is characterised in that：Mainly by air bleeding valve, locating rack, rocking bar, bearing plate, tension spring Constitute；By valve flashboard (1) and valve cover (2) for overall structure is constituted, valve flashboard is assemblied in by starting the air bleeding valve in consistent manner It is intraoral that cylinder boss socket and exhaust outlet form holistic flashboard activity, joins below valve cover (2) the right and left extension The tension spring (5) of lower end fixation is connect, hook (7) is made above；The locating rack, by stand (4), front and rear transverse slat (8), positioning Post (10) is monolithically fabricated for one, the middle setting rocker shaft (13) of the top of front and rear two transverse slat, the left and right two ends of two transverse slat tops The locating dowel (10) of bearing plate (12) is made upwards；The rocking bar, two rocking bars share rocker shaft (13), two rocking bar hypomere heads (6) hook (7) that connection valve cover (2) the right and left extension is made above respectively；Make respectively the corner of the bearing plate Go out location hole corresponding with the locating dowel (10), after bearing plate location hole is passed through into locating dowel (10), cover in two rocking bar epimeres (9) in head.

2. a kind of exhaust valve opening mechanism as claimed in claim 1, it is characterised in that：The stand (4) of the locating rack is one The framework of quadrangle, the height of stand (4) the right and left with start the highly identical of cylinder boss (3), inner edge and the hair of stand (4) The outside of dynamic cylinder boss (3) coincide, and is closely sleeved on the boss (3) for starting cylinder；Two transverse slats (8) before and after described, by stand (4) front and rear both sides extend vertically upwards and are formed；Locating dowel (10) before and after described on transverse slat first makes locating dowel (10) Then it is separately fixed on front and rear transverse slat (8), or is directly made upwards from front and rear transverse slat (8).