US1587578A

US1587578A - Diesel motor

Info

Publication number: US1587578A
Application number: US341230A
Authority: US
Inventors: Blache Hans Henrik
Original assignee: Individual
Current assignee: Individual
Priority date: 1918-02-09
Filing date: 1919-11-28
Publication date: 1926-06-08
Anticipated expiration: 1943-06-08

Description

June 8,1925. 1,587,578

H,- H. BLACHE DIESEL MOTOR .inne ti,

arena naive i-IENRIK refieran, or ooPnNHaeEN, DENMARK.

DIESEL IVIOTOR.

Application filed November 28, 1.919, Serial No. 341,230, and in Denmark February 9, 1918.

In Diesel inotors in which the valves are nioved by ineans of levers pivoted on a coninion shaft and operated by cains on a cani shaft it is customary' to place the levers of the fuel valve and the starting valve on a sleeve on said shaft so that the levers have diiilerent eccentricities as to greatness and position on the sleeve and hence in relation to the shaft. Furthermore in the known constructions the sleeve is provided with a lever carrying a handle which may be manually set into different positions corresponding to the dilierent positions of the sleeve thus obtaining that (l) Ihe starting valve works while the `fuel valve is out of action.

(2) Both valves are out of action.

(3) The starting valve is out of action while the fuel valve works.

rlhis invention now relates to an arrangement by which the setting of the handle .is effected,automatically by the pressure of the starting air. In multi-cylinder Inotors, the improved arrangement enables all cylinders or groups of cylinders to be easily set from starting to igniting position in such a manner that the starting valvesare closed before the fuel valves are opened so that the resulting ignitions can notl enter the starting valves.

A constructional forni of the invention `is shown in the drawing.

Fig. 1 is a vertical` section lon line 1-,1 of Fig. 2.

Fig. 2 is a plan view of lthe cover plate of a cylinder with appurtenant parts.

Figs. 3 and 4lshow the levers of the starting and fuel valves, respectively, on a larger scale.

Fig. 5 is an enlarged detail section on line 5-5,.Fig. 2.

a. and b are the starting and fuel valves, respectively, of. the cylinder which are both held on their seats b; springs c?, c and connected byineans of Aars f, eto levers 7a, g pivoted on a fixed shaft z'. The levers g, 71. carry rollers j, /c to engage the cains m, aof the cani shaft Z. Jhen the latter is rotated by the in otor the earns are pressed against lthe rollers .whereby the levers g, v7i are oscillated and the valves closed and opened. rihe levers g and 7i are directly vmounted on a sleeveor inovable `fiile runi.element p '(se'e FistI 5) rotatably; .mounted .011. the .Shaft i and having twoeccentrp i i ally-displaced relation, eac

forming a fulcruln for one of said levers.

A lever 0 is rigidly connected to sleeve 7? so that the latter is turned about shaft e' when lever o is turned. Consequently, when the lever 0 is turned, the centres of oscillation of the levers g and .71.' will be raised or lowered in such ainanner that when the centre of oscillation of the lever g is raised, then the centreA of oscillation of the lever is lowered and vice versa. By this arrangement the rollers /cand j are brought into or out of engagement .with their corresponding canas a and m respectively. Y

Fig. 3 shows the sleeve in the position in which the starting valve works. The centre Q of the eccentric sleeve is in its loi-.verinost position. The lever 0 is in its uppermost position .when the lever 7L is in the position shown in Fig. 3 in which the roller 7c is influenced by the cani n so that the starting valve will work.

Fig. t shows` the corresponding position of the fuel .valve lever. The eccentricity of the sleeve p here is differentat least regards the direction f roin what it is at the starting valve. rlhe centre r of the sleeve here is in its uppermost position which is also the case with the lever o which is in the saine position as in Fig. 3. In this position of the lever o the roller is in its uppermost position where it is completely free of the cam m so that the fuel valve will not work.

If the lever' o is turned to the position o', Figs, 3 and 4, the levers 7L, g will be moved into the positions shown in dotted lines. In these positions the lever 7i. of the starting valve is raised so that lthe roller le is free of the cani a, the centre g of the eccentric sleeve around which the lever oscillates being raised to the position g. The starting valve, therefore, will leave oill working.

On turning'the lever o into the position o the lever g of the fuel valve will loe lowered thus 'bringing the roller y' into engagement with the cani mv because of the centre r of the eccentric sleeve around ,which the lever g oseillates being inoved to yits lfowerniost 'posit-ion r. ce it folle .that feelin tarte OVNIs 1e knowngd o* .was .Carried 0st. by handfdvlces prof ng-aut aticellyl this 'Srtle er"A @Thy means ,it the cniupp ied to' the inotol.

the. lever By4 the rr vided for 'e iter/,57s

On the cover of the cylinder a small cylinto active position and the fuel lever into inder s, Fig. l; is placed in which a spring t presses down piston g/ connected by a bar u with the lever o of the eccentric sleeve j), Figs. 3 and 4. The cylinder s communicates through the channel 'U with the channel ra sapplyingI compressed air to the starting valve a'. lVhen the spring t keeps the piston and therewith the lever o in their lowermos't position the levers g, 7L. will occupy the positions shoivn in dotted lines in Figs. 3 and Also that, as above said, the starting valve will be out of Working, While the fuel valve works.

Then compressed air flows through the channel :t a portion of it will also simultaneously pass through the channel o to the cylinder s and raise the piston t thereby setting the lever o in its uppermost position, i. e. the levers g, /t vvill occu;- y the positions shown in Figs, and el in which the starting valve Works While the fuel valve is out of operation. At the opening of the starting valve the motor is started and lept running by the pressure air, the starting valve only Working so that no ignition v vill take place. When the motor has obtained the necessary speed the compressed air 1s shut off and consequently the spring t presses the piston y on to the bottom of the cylinder s. Hereby the lever 0 goes to its loivermost position and simultaneously the lever 7L of the starting valve is raised so that its roller becomes free of the cam while the lever g of the fuel valve is lowered so that its roller engages its cam whereby the fuel valve functions and the ignitions ivill commence.

l. claiml. ln a Diesel engine, the combination, with a cylinder, separate starting and fuel valves therefor; and an operating lever for each valve; of a cam shaft; a pair of cams thereon; one for each lever; a rotatable supporting shaft having two eccentric portions in mutually-displaced relation, each forming a fulcrum for one of said levers; and means controlled by the starting air supplied to the engine for automatically shifting the rotatable supporting` shaft from one position to another so as to simultaneously move one lever into, and the other lever out of; operative position with relation lto their respective cams.

91. lu a Diesel engine; the combination, with a cylinder; separate starting and fuel valves therefor, and an operatingJ lever for each vi lve; of a cam shaft; a pair of cams thereon; one for each lever; a movable fulcrum element having tivo eccentric portions in mutually-displaced relation, each forming a fulcrum for one ofv said levers; and means controlled by the starting air supplied to the engine for automatically shifting the fulcrum element from one position to another 'so as to initially move the starting lever inactive position with relation to their respective cams, and to thereafter reverse the activity of said levers.

3. ln a Diesel engine, the combination of a cylinder; and separate starting and fuel valves therefor; a separate operating lever for each val Ye; operatingl means individual to each lever; a rotatable supporting element having tivo eccentric portions in mutuallydisplaced relation, each forming a fulcrum for one of said levers; and means controlled by the starting air supplied to the engine for automatically rotating said supporting element so to change the relation of said fulcruni portions to the respective levers. and the consequent activity of said levers relative to their resp active operating means.

ln a Diesel engine, the combination of a cylinder, and separate starting and fuel valves therefor; a separate operating lever for each valve; operating means individual to each lever; a rotatable supporting element having tivo eccentric portions in mutuallydisplaced relation, each formingafulcrum for one of said levers; an actuating member connected to said supporting element to rotate the same so as to change the relation of said fulcrum portions to the respective levers and the consequent activity of said levers relative to their respective operating means; and means controlled by the starting air supplied to the engine for automatically operating said actuatingmember.

5. In a Diesel engine, the combination, with a cylinder, separate starting and fuel valves therefor; and an operating lever for each valve; of a cam shaft; a pair of cams thereon, one for each lever; a movable fulcrum element having two different eccentric portions vvhereon said levers are directly mounted; and means controlled by the starting air supplied to the engine for automatically shifting the fulcrum element from one position to another to govern the capability of the two levers to be operated by their respective cams.

6. In a Diesel engine, the combination of a cylinder; separate starting and fuel valves therefor; separate operating means for each ialve; and means controlled by the starting air supplied to the engine for automatically rendering one operating` means active and the other inactive. i'

7. In a Diesel engine; he combination of a cylinder; separate starting and fuel valves therefor; separate operating means for each valve; and means controlled by the starting air supplied to the engine for automatically contiolling the activity of the tivo operating means in reverse relation to each other.

8. In a Diesel engine, the combination of a cylinder; separate starting and fuel valves therefor; separate operating means for each 1,5 amr/e valve; and means controlled by the starting air supplied to the engine for automatically rendering the starting,` valve operating means alternately active and inactive, and the l'uel valve operatingmeans alternately inactive and active.

9. In a Diesel engine, the combination or" a cylinder7 and separate starting` and inel valves therefor; a. separate operating lever for each valve; operating` means individual to each lever; a movable element having if'ulcrnm means with Which said levers immediately oo-aet; an actuating member connected to shift said element so as to vary the position of said fnlcrum means relative to said levers and the consequent activity of the levers relative to their respective operating means; and means controlled by the starting air supplied to the engine for automatically operating said member.

l0. In a Diesel engine, the combination of a main. cylinder provided with separate starting and inel valves7 and with an aisnpply channel leading to the starting' valve; separate operating` means for each valve; a device for controlling the activity of the tvvo operating means; an auxiliary cylinder mounted on the main cylinder and having an air-supply channel leading,l to it from the tiret-named channel to permit a portion of the starting air to be deliver-ed to the auxiliary cylinder; and a piston in the auxiliary cylinder automatically operated hy such air and connected to said controllingl device to actuate the same when so operated.

1l. In a Diesel engine;l tl e combination of a main cylinder provided Vith separat-e starting and 'fuel valves, and with ai airsnpply channel lea-ding to the starting valve; separate operating` means i'orl each valve; a rotatable controllingl device for governing the cperativeness oi"- the tivo operating' means; an auxiliary cylinder mounted on the main cylinder and having an airsnpply channel leading;` to it liromrthe [irstnamed channel to permit a portion of the starting air to be delivered to the auxiliary cylinder; and a piston in the auxiliary cylinder automatically operated by such air and connected to said controlling` device to rotate the same when so operated.

In testimony whereof I my signa ture.

HANS HENRK BLACHE.