Title チェインソーの評価法 (III) : 出力特性について Author(s) 坂本, 文洋
Contents
1. ORME X mR 1 306 1974 O UDR 1969 1975 Resume There are two ways to prevent the vibration disease by chainsaws One is to reduce its vibration and another is to shorten its operating time In this report we study the latter especially how to keep the cutting efficiency which has influence on the operating time The maintenance of a chainsaw has a great effect on the output and the cutting efficiency We tested the relation between the output and the condition of the plug of the airfilter and of the carburetor2. Y XYP 2 1 SHAFT OUTPUT PS 5 Fig 2 1 The output curve and torque 4 curve under the five conditions of the plug the airfilter and the carburetor STIHL 041 AV No 8012762 sper res 1 With new filter new plug as aera NR and carburetor adjustment AN 2 With new filter dirty plug NANS and carburetor adjustment N 3 With dirty filter new plug ae A SHAFT TORQUE and carburetor adjustment gt kg m 4 With dirty filter dirty plug 2 05 and carburetor adjustment 5 With dirty filter dirty plug and without carburetor adj o i o Uw Ny t tere SHAFT TOR
3. R W Slit Fig 1 Torque measurement system 1 1 KYOWA TP 10 KMC 10kg m 1 503m V STRAIN 3005x106 Pie FAs 1 5
4. F STIHL041 AV EE 2 NGK B PM 7 0 3m 1 5m4 T 0 2mm 2 0mmC 0 5mm 3 0 7mm 1 5mm 0 9m 1 5mm 156 SHAFT OUTPUT PS 5 of o 2 03 o o 4 4 SHAFT OUTPUT 3 28 gt 9 8 9 S
5. High x ST
6. High x O MAERED O K 29 SRR CRAIC RU GRE 1 2 44 45
7. 1 4 1 4 158 1 4 4 STIHL 041AV Ne 8012762 CHS Low 1 1 4 1 4 High 3 4 1 4 3
8. 7 High COM 1 4 1 8 Low High High Gal 160 SHAFT OUTPUT PS 5 o o 3 SHAFT OUTPUT 6 g 9 o 3 SHAFT
9. 3 4 7500 rpm 0 4 7 8 15 16 0 4 15 16 041 AV E ERC k A
10. 4 2 1 STIHL 041AV No 8022762 2 2 STIHL 041A No3157542 2 3 ST 1 HL041A V E No 8608477 155 SHAFT OUTPUT PS
11. 10kg m 8000 rpm 1 kg m 15000rpm 153
12. STIHL 041 AV E 1 4 15 16 4 GUA Ly lA 6 AHA UA 1 4 CLOSED 2 4 CLOSED 3 4 CLOSED 7 8 CLOSED 15 16 CLOSED 0 4 CLOSED Fig 4 Six conditions of airfilter A area is closed 4 157 SHAFT OUTPUT PS 5 0 4 CLOSED o 91 4 CLOSED Pasha 2 4 CLOS o o3 4 CLOSED o 07 8 CLOSED 4 x 15716 CLOSED ee ae Po Fig 5 3 Pre N N The output curve and the tor pA que curve under the six cond NM itions of airfilter 2 ae A Ny SHAFT STIHL 041AV E No 8608477 OUTPUT o MA OE ES KN kg m 2 vo 3 e 4 NTS SeXy ese 50 en 3 f ANN z e o SNSINS om Ng 2 N x o Ng o ia No 1 0 4 5 6 7 8 10 11 ENGINE RPM X 1000rpm 5 1 4 2 4 0 4 8000 rpm
13. 2 RACHA 3 152 30 7
14. 5 o o o o Oa 0 3 Oe mee ee 4 5 4 Fig 2 3 The output curve and torque curve under the five conditions SHAFT OUTPUT of the plug the airfilter and the carburetor STIHL 041AV rao EN E No 8608477 3 se AN 1 With new plug and carbur N A N etor adjustment SN de 2 With new filter dirty plug S SAY and carburetor adjustment SN SHAFT TORQUE 3 With dirty filter new plug 1 o k m 2 A and carburetor adjustment 4 With dirty filter dirty plug and carburetor adjustment 0 4 5 With dirty filter dirty plug and without carburetor adj 0 3 ustment 0 2 SN 0 1 et a ee Cs E POR Ce ce E 0 4 5 6 7 8 9 10 11 ENGINE RPM X 1000rpm 041AV E 2
15. The results are as follows 1 The dirty plug made slightly the output down The wider the pluggap the larger the output 2 We tested in six conditions of airfilter 0 4 1 4 2 4 3 4 7 8 15 16 closed Over 7000 rpm the first three conditions slightly influence the output Under the other 162 conditions the greater the closed area the smaller the output 3 Carburetor adjustment has a great influence upon the output Especially the maxi mum output depends almost entirely on its high screw adjustment We have a plan to do more measurement of output and cutting experiment to make clear the relationship between the output and the cutting efficiency and then research for the ideal type of the output curve of the chainsaws
16. 9 6 1 6 2 6 3 Low High 1 1 4 7 High 9 1 5 7000rpm 6 TAA SHAFT OUTPUT PS 5 o o 1 SHAFT OUTPUT i i 4 o u 7 O o 1 SHAFT TORQUE 4 O 7 4 Fig 6 1 The output curve and torque curve under nine conditions of o 0 carburetor adjustment N STIHL 041AV No 3157542 i ie ae 6 1 SA ff amp oO High Jo Po ae 1 ae 7n Low kl 2 4 2 SHAFT TOROUE _ screw kgm See 05 1 J147 N a an a 0 4 gz 0 0 0 gt 6 1 n x Onna Ne o 03 ENGINE RPM X1000 rpm 159 SHAFT OUT
17. TORouE 5 4 6 ug 4 Fig 6 3 ER SE The output curve and torque 3 g SSR l curve under nine conditions of J N carburetor adjustment N a 3 High pf yeaa N N serew 1 3 1 ow A N screw j SHAFT TORQUE 1 slels kg m 05 aN ort 04 1 Ne On 03 Anna o o us 6 S4 sa 0 2 O p g EE 6 7 8 9 1 9 0 ENGINE RPM X1000 rpm Low 1 High 1 2 1 4 E Am 5000rpm 8000 rpm 6000 7000rpm CH 4 5000rpm
18. 6000 9000rpm 6000 9000rom BREEDE 161 1 4
19. PUT PS 5 o o 2 SHAFT OUTPUT 5 o 8 O 0 2 SHAFT TORQUE Do 4 8 a 4 Fig 6 2 oe The output curve and torque 07 0 o sada a curve under nine conditions of 3 9 4 carburetor adjustment oe SS a Zi 2 5 High 7 of N screw 1 3 a i oe 1 f ai _ Low 2 4 screw 2 SHAFT TORQUE l 2 REN n 4 kam o 0 5 ae 0 0 22 2 ra oe 04 1 Ao a a Ro 03 i ee a ns meesi i 0 2 E ES Se ee ES EE ee Se 1 0 5 6 7 8 9 10 ENGINE RPM X1000 rpm 4 5 6 BMY sv b gt SRR SHE 1 4 5 6 5 6 l 2 3 4 5 6 7 8 9
20. QUE 0 4 SS ustment Sa 2 1 AN 0 3 Na RNN 0 2 NO ah 0 1 Fras E EE Cee Oe eee Cee eT 8 9 10 11 0 3 4 5 6 7 ENGINE RPM X1000rpm 154 SHAFT OUTPUT PS 5 o o o o 2 Gussssss o 3 e 4 5 4 SHAFT OUTPUT g gn Fig 2 2 Co The output curve and torque curve under the five conditions of the plug the airfilter and the carburetor STIHL 041AV No 3157542 l With new filter new plug and carburetor adjustment 2 With new filter dirty plug and carburetor adjustment SHAFT TORQUE 3 With dirty filter new plug kg m and carburetor adjustment 4 With dirty filter dirty plug and carburetor adjustment 4 5 With dirty filter dirty plug and without carburetor adj 0 3 ustment 0 3 4 5 6 7 1 ENGINE RPM X 1000rpm STIHL 041 AV No 8012762 No 3157542 STTI HLO0O41AV E No 8608477 3 LOW 1 1 4 High 3 4 2
21. RENA yoto University Research Information Repository KM E a wd 9 Pt DK F PO 3 KYOTO UNIVERSITY A HHHHHHHHHH DiHHHHHHHH Author s O00 00 00 00 n BULLETIN OF THE KYOTO 1978 50 151 162 http hdl handle ne 2433 191655 Departmental Bulletin Paper atte Kyoto University 151 W Heh A Method for Evaluation of Chain Saw Jj On the Output Humihiro Sakamoto Yoshihiko TaKimoto 3j tt MA
22. e Fig 3 The output curve and torque curve under many conditions of plug STIHL 041AV E No 8608477 057 GIES i New plug 2 0mm Lf S est 2 New plug 0 7mm SHAFT 3 New plug 0 5mm NM TORQUE 4 New plug 0 3mm Ni i kgm 5 Dirty plug 2 mW 05 In the parenthethis shows the value of pluggap SHAFT TORQUE Or SRN as SS T Dn ANANN 0 3 1 Ser NAYS 9 Neo 0 2 oe XN oi EE 0 3 4 5 6 7 8 9 10 ii ENGINE RPM X1000 rpm 0 5mm 2 D T 3
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