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,[XG GAZ v *. 8] :8=MS ;FIS, V[gHLG. Two stroke cycle Engine. C[T]VM o. VF ,[XGGF VT[ TF,LDFYL"VM4 8] :8=MS ;FIS, 4 8] :8=MS 5[8=M, V[gHLGGL SFI" 5wWlT4 8] :8=MS 0Lh, V[gHLG SFI" 5wWlT4 :S[J[HLU lJX[ XLBX[P. 8] :8=MS V[gHLG [ Two Stroke Engine ] v.
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,[XG G\AZ v * 8] :8=MS ;FIS, V[gHLG Two stroke cycle Engine
C[T]VM o • VF ,[XGGF V\T[ TF,LDFYL"VM4 • 8] :8=MS ;FIS, 4 • 8] :8=MS 5[8=M, V[gHLGGL SFI" 5wWlT4 • 8] :8=MS 0Lh, V[gHLG SFI" 5wWlT4 • :S[J[HL\U lJX[ XLBX[P
8] :8=MS V[gHLG [ Two Stroke Engine ] v H[ V[gHLGDF\ ;SXG4 SMd5|[XG4 5FJZ VG[ V[ShM:8V[ RFZ[I lS|IFVM S|[gS XFO8GF V[S VF\8FDF\ V[8,[S[ 360 00LU|LDF\ 5}6" Y. V[SJFZ XlST pt5gG YFI T[JF V[gHLGG[ 8] :8=MS V[gHLG SC[ K[P
8] :8=MS V[gHLG [ Two Stroke Engine ] v S],L\U OLg; :5FS" %,U NCG lJEFU V[ShM:8 VFp8 ,[8 l5:8G ZL0 JF<J OI]V, .G,[8 S|[gS S[.; SG[S8L\U ZM0 S|[gS XFO8
8] :8=MS ;FIS, 5[8=M, V[gHLGGL SFI" 5w3lT • s Working Principle of Two Stroke Petrol Engine f • V5 J0" :8=MS s ;SXG VG[ SMd5|[XG :8=MS f [ Up ward Stroke ] • l5:8GUlT B.D.C. YL T.D.C. • .G,[8 5M8" B],[ • S|[gS S[.;DF\ SN J3[4 NAF6 38[ • 5ZL6FD[ X}gIFJSFX pt5gG YFI • CJF VG[ 5[8=M,G]\ lD`F|6 S|[gS S[.;DF\ NFB, YFI • S|[gS S[.;DF\ ;SXGGL lS|IF YFI :5FS" %,U V[ShM:8 5M[8" 8=Fg;OZ 5M8" .G,[8 5M8" S|[gS XFO8 S|[gS S[.;
8] :8=MS ;FIS, 5[8=M, V[gHLGGL SFI" 5w3lT • s Working Principle of Two Stroke Petrol Engine f • V5 J0" :8=MS s ;SXG VG[ SMd5|[XG :8=MS f [ Up ward Stroke ] :5FS" %,U ;L,Lg0Z V[ShM:8 5M[8" l5:8G 8=Fg;OZ 5M8" .G,[8 5M8" SG[S8L\U ZM0 S|[gS S[.; S|[gS XFO8
8] :8=MS ;FIS, 5[8=M, V[gHLGGL SFI" 5w3lT • l5:8G B.D.C.YL T.D.C. TZO HJFYL 8=Fg;OZ 5M8" VG[ V[ShM:8 5M8" A\3 YFI K[ • ;L,Lg0ZDF\ SN 38[ NAF6 J3[ K[P • VUFp 8=Fg;OZ 5M8" wJFZF ;L,Lg0ZDF\ VFJ[, • CJF v 5[8=M,G]\ lD`F|6 SdAXG R[dAZDF\ NAFI • VFD4 ;L,Lg0ZDF\ SMd5|[XGGL lS|IF YFI K[P • VF :8=MSGF V\T[ l5:8G T.D.C. 5Z 5CM\R[ K[P • S|[gS XFO8 V03M VF\8M s 180 0 0LU|Lf OZ[ K[P :5FS" %,U 8=Fg;OZ 5M8" V[ShM:8 5M[8" CJF + 5[8=M, .G,[8 5M8" S|[gS S[.;
8] :8=MS ;FIS, 5[8=M, V[gHLGGL SFI" 5w3lT • s Working Principle of Two Stroke Petrol Engine f • 0FpG J0" :8=MS s 5FJZ VG[ V[ShM:8 :8=MS f s Down ward Stroke f V[ShM:8 5M[8" :5FS" %,U • ;L,LPDF\ SMd5|[XG :8=MSGF V\T[ NAF.G[ UZD YI[, lD`F|6 5Z :5FS" %,U J0[ T6BM SZTF lD`F|6 ;/U[ K[P • U[;G]\ NAF6 l5:8G 5Z VFJTF l5:8G T.D.C.YL B.D.C.TZOHFI K[P • VFD4 XlST pt5gG YFI K[P 8=Fg;OZ 5M8" .G,[8 5M8" S|[gS S[.;
8] :8=MS ;FIS, 5[8=M, V[gHLGGL SFI" 5w3lT • l5:8GGL UlT T.D.C.YL B.D.C. • V[ShM:8 5M8" B],[ 4 • V[ShM:8 U[; ;L,Lg0ZDF\YL ACFZ GLS/[ • 8=Fg;OZ5M8" B],[4 S|[gS S[.;DF\YL lD`F|6 ;L,Lg0ZDF\ 8=Fg;OZ YFI • lD`F|6 V[ShM:8 5M8" DFZOT[ ;L3] ACFZ G GLS/[ T[ DF8[ l5:8G C[0 0LO,[S8Z 8F.5 CMI K[P V[ShM:8 5M[8" :5FS" %,U 8=Fg;OZ 5M8" S|[gS S[.; .G,[8 5M8" • :8=MSGF V\T[ l5:8G B.D.C. 5Z CMIP • S|[gS XFO8 ALHM V03M VF\8M V[8,[S[ S], A[ VF\8F s 360 0 0LU|Lf OZ[ K[P
8] :8=MS ;FIS, 5[8=M, V[gHLGGL SFI" 5w3lT • 0FpG J0" :8=MS s 5FJZ VG[ V[ShM:8 :8=MS f s Down ward Stroke f :5FS" %,U V[ShM:8 5M[8" 8=Fg;OZ 5M8" V[ShM:8 U[; .G,[8 5M8" S|[gS S[.;
8] :8=MS ;FIS, 0Lh, V[gHLGGL SFI" 5w3lT • s Working Principle of Two Stroke Diesel Enginef • !PV5 J0" :8=MS s ;SXG VG[ SMd5|[XG :8=MS f s Up ward Stroke f .gH[S8Z • l5:8GGL UlTB.D.C.YL T.D.C. • .G,[8 5M8" B],[ K[P • S|[gS S[.;DF\ SN J3[[ v NAF6 38[ K[P • S|[gS S[.;DF\ X}gIFJSFX pt5gG YTF\ • CJF S|[gS S[.;DF\ NFB, YFI K[P • S|[gS S[.;DF\ ;SXGGL lS|IF YFI K[P V[ShM:8 5M[8" 8=Fg;OZ 5M8" CJF .G,[8 5M8" S|[gS XFO8 S|[gS S[.;
8] :8=MS ;FIS, 0Lh, V[gHLGGL SFI" 5w3lT • s Working Principle of Two Stroke Diesel Enginef • l5:8G B.D.C.YL T.D.C.TZO HFI K[P • 8=Fg;OZ VG[ V[ShM:8 5M8" A\3 YFI K[P • ;L,Lg0ZDF\ SN 38[ - NAF6 J3[ K[P • ;L,Lg0ZDF\ CJF SdAXG R[dAZDF\ NAFI K[P • VFD4 ;L,Lg0ZDF\ SMd5|[XGGL lS|IF YFI K[P • VF :8=MSGF V\T[ l5:8G T. D. C.5Z CMIP • S|[gS XFO8 V03M VF\8M s 180 00LU|L f OZ[ K[P .gH[S8Z V[ShM:8 5M[8" 8=Fg;OZ 5M8" CJF .G,[8 5M8"
8] :8=MS ;FIS, 0Lh, V[gHLGGL SFI" 5w3lT • s Working Principle of Two Stroke Diesel Enginef • 0FpG J0" :8=MS s 5FJZ VG[ V[ShM:8 :8=MS f s Down ward Stroke f .gH[S8Z V[ShM:8 5M[8" 8=Fg;OZ 5M8" • ;L,LPDF\ NAF.G[ UZD YI[, CJFDF\ 0Lh,GM :5|[ SZTF 0Lh, ;/U[ K[P • U[;G]\ NAF6 l5:8G 5Z VFJTF l5:8G T.D.C. YL B.D.C.TZOHFI K[P • VFD4XlST pt5gG YFI K[P .G,[8 5M8"
8] :8=MS ;FIS, 0Lh, V[gHLGGL SFI" 5w3lT • s Working Principle of Two Stroke Diesel Enginef • l5:8G T.D.C.YL B.D.C.TZO HTF V[ShM:8 5M8" B],[ V[ShM:8 U[; ;L,LPDF\YL ACFZ GLS/[ K[P • 8=Fg;OZ 5M8" B],JFYL S|[gS S[.;DF\GL CJF ;L,LP DF\ 8=Fg;OZ YFI K[P • VF :8=MSGF V\T[ l5:8G B.D.C.5Z 5CM\R[ K[P • S|[gS XFO8 ALHM V03M VF\8M V[8,[S[ S], A[ VF\8F s 360 0 0LU|Lf OZ[ K[P .gH[S8Z V[ShM:8 5M[8" 8=Fg;OZ 5M8" .G,[8 5M8"
:S[J[HL\U[ Scavenging ] • 8] :8=MS ;FIS, V[gHLGDF\ ;L,Lg0ZDF\YL ACFZ GLS/TF V[ShM:8 U[;L;G[4 ;L,Lg0ZDF\ NFB, YTF\ O|[X RFH"GF NAF6YL4 ;L,Lg0Z DF\YL ACFZ SF-JFGL lS|IFG[ :S[J[HL\U TZLS[ VM/BJFDF\ VFJ[ K[P • OMZ :8=MS ;FIS, V[gHLGMDF\ V[ShM:8 U[;G[ V[ShM:8 :8=MS NZdIFG l5:8G B.D.C.YL T.D.C.TZO HTF WSSF[ DFZL ;L,Lg0ZDF\YL ACFZ SF-[ K[P 5Z\T] • 8] :8=MS V[gHLGMDF\ 5FJZ VG[ V[ShM:8GL lS|IFVM V[S ;FY[ YFI K[P T[YL VFJF V[gHLGMDF\ V[ShM:8 U[;G[ ;L,Lg0ZDF\YL 5]Z[5]ZM ACFZ SF-JF :S[J[HL\UGL ZLT V5GFJJL 50[ K[P
:S[J[HL\UGL H~ZLIFT[ Need of Scavenging ] • HM V[ShM:8GL lS|IF NZdIFG V[ShM:8 U[;G[ ;L,Lg0ZDF\YL 5]Z[5]ZM ACFZ SF-JF DF\ G VFJ[ TF[4 ;SXG :8=F[S NZdIFG ;L,Lg0ZDF\ NFB, YTF\ GJF\ O|[; sTFHFf lDz6 ;FY[ A/[, U[; E/L HTF\ lDz6G[ 0FI<I]8 sD\Nf SZ[ K[P • H[YL A/T6 5]Z[5]Z] ;/UT] GYLP XlST VF[KL D/[ K[P • ;/uIF lJGFG\] A/T6 V[ShF[:8 U[; ;FY[ ACFZ GLS/T] CMJFYL OI]V,GM J5 ZFX JW] YFI K[P • VFD4YT] V8SFJJF H]NL H]NL :S[J[HL\UGL ZLTM V5GFJJFDF\ VFJ K[P
:S[J[HL\UGF 5|SFZ[ Types of Scavenging ] - • !P I]GL O,M :S[J[HL\U • ZP A[S O,M s,]5f :S[J[HL\U • #P S|M; O,M :SJ[HL\U
:S[J[HL\UGF 5|SFZ[ Types of Scavenging ] - • !P I]GL O,M[ :S[J[HL\U [ Uni flow Scavenging ]v V[ShM:8 JF<J • ;L,LPGF GLR[GF EFUDF\ A[ .G,[8 5M8" ;FD ;FD[ VFJ[,F CMI K[P • ;L,Lg0Z C[0DF\ V[S JF<J CMI K[P • O|[X RFH" .G,[8 5M8" wJFZF ;L,LDF\ NFB, YFI4 • H[ V[ShM:8 U[;G[ NAF6 VF5LG[ V[ShM:8 JF<J wJFZF ACFZ SF-[ K[P • GJF lD`F|6GF JC[JFGL lNXF VG[ V[ShM:8 U[; GL ACFZ GLS/JFGL lNXF V[SH CMI K[P • H[YL T[G[ I]GL O,M :S[J[HL\U SC[ K[P V[ShM:8 U[; V[ShM:8 U[; lD`F|6 lD`F|6 .G,[8 5M8" .G,[8 5M8"
:S[J[HL\UGF 5|SFZ[ Types of Scavenging ] - • ZP A[S O,M :S[J[HL\U [ Back flow Scavenging ] • T[DF\ .G,[8 5M8" ;L,LPDF\ GLR[GL AFH] VG[ V[H AFH]V[ V[ShM:8 5M8" ;L,LPDF\ p5Z VFJ[, CMI K[P • .G,[8 5M8" wJFZF GJ] lD`F|6 ;L,Lg0ZDF\ NFB, Y. p5ZGL TZO H. V[ShM:8 U[;G[ WSSF[ DFZL V[ShM:8 5M8" wJFZF ;L,Lg0ZDF\YL ACFZ SF-[ K[P • VFD4GJ] lD`F|6 ;L,Lg0ZDF\ ,]5 VFSFZGL lNXFDF\ JC[ K[P V[ShM:8 5M8" V[ShM:8 U[; lD`F|6 .G,[8 5M8"
:S[J[HL\UGF 5|SFZ[ Types of Scavenging ] - • #P S|M; O,M :S[J[HL\U [ Cross flow Scavenging ] V[ShM:8 5M8" • T[DF\ ;L,LPDF\ GLR[GL AFH]V[ 8=Fg;OZ5M8"GL ;FD[ V[ShM:8 5M8" VFJ[ K[P • T[DF\ J5ZFTF l5:8GGM C[0 0LO,[S8Z 8F.5 s-F/JF/F[f CMI K[P • H[YL 8=Fg;OZ5M8" wJFZF GJ] lD`F|6 ;L,Lg0ZDF\ NFB, Y. p5ZGL TZO H. V[ShM:8 U[;G[ WSSF[ DFZL V[ShM:8 5M8"DF\YL ACFZ SF-[ K[P • VF ZLT 8] :8=MS V[gHLGMDF\ J5ZFI K[P lD`F|6 V[ShM:8 U[; .G,[8 5M8"
5|`GM • 8] :8=MS V[gHLGDF\ lD`F|6 ;F{ 5|YD SIF\ NFB, YFI K[ m • 8] :9=MS V[gHLGDF\ SIF SIF 5M8" CMI K[ m • 8] :8=MS V[gHLGM SIF VFCGMDF\ p5IMU YFI K[ m • :S[J[HL\U V[8,[ X] m • :S[J[HL\U XF DF8[ H~ZL K[ m • :S[J[HL\UGF 5|SFZ H6FJM m
p5;\CFZ o • VFH[ VF ,[XGDF\YL4 • 8] :8=MS ;FIS, 4 • 8] :8=MS 5[8=M, V[gHLGGL SFI" 5wWlT4 • 8] :8=MS 0Lh, V[gHLG SFI" 5wWlT4 • :S[J[HL\U lJX[ XLBX[P • CJ[ 5KLGF ,[GXDF\ 5[8=M, VG[ 0Lh, V[gHLG TOFJT lJX[ XLBLX]P
