B. BENTUK RUANG BAKAR:BENTUK RUANG BAKAR:
Bentuk ruang bakar sangat berpengaruh dengan adanaya penempatan dua buah Bentuk ruang bakar sangat berpengaruh dengan adanaya penempatan dua buah katup dan busi. Ada beberapa macam atau jenis ruang bakar yang umum digunakan : katup dan busi. Ada beberapa macam atau jenis ruang bakar yang umum digunakan :
1.
1. Ruang Ruang bakar bakar Model Model setengah setengah bulat bulat (Hemispherica
(Hemispherical l Comustion Chamber) Comustion Chamber)
Ruang baker model ini mempunyai permukaan Ruang baker model ini mempunyai permukaan yang kecil disbanding dengan jenis ruang baker yang kecil disbanding dengan jenis ruang baker lain yang sama kapasitasnya, ini berarti panas lain yang sama kapasitasnya, ini berarti panas yang hilang sedikit (efisiensi panas tinggi) yang hilang sedikit (efisiensi panas tinggi) dibanding dengan model lainnya. Disamping itu dibanding dengan model lainnya. Disamping itu memungkinkan efisiensi saat pemasukan dan memungkinkan efisiensi saat pemasukan dan pembuangan (intake & exhaust) lebih tinggi. pembuangan (intake & exhaust) lebih tinggi. Ruang baker model ini konstruksinya lebih Ruang baker model ini konstruksinya lebih sempurna namun penempatan mekanisme sempurna namun penempatan mekanisme katupnya menjadi lebih rumit.
katupnya menjadi lebih rumit. 2.
2. Ruang Bakar Model Baji (Wedge TypeRuang Bakar Model Baji (Wedge Type Combustion Chamber)
Combustion Chamber)
Ruang baker model ini kehilangan panasnya juga Ruang baker model ini kehilangan panasnya juga kecil, konstruksi mekanisme katupnya lebih kecil, konstruksi mekanisme katupnya lebih sederhana bila dinbandingkan dengan ruang sederhana bila dinbandingkan dengan ruang baker model stengah bulat
baker model stengah bulat
3.
3. Ruang Bakar Model Bak Mandi (BathtupRuang Bakar Model Bak Mandi (Bathtup Tipe Combustion
Tipe Combustion Chamber)Chamber)
Ruang bakar model ini konstruksinya sederhana, Ruang bakar model ini konstruksinya sederhana,
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
C.
C. Mekanisme KatupMekanisme Katup
Gambar 2.12. Mekanisme Katup Gambar 2.12. Mekanisme Katup
Puli timing crankshaft dipasang pada ujung poros engkol (crankshaft) dan puli Puli timing crankshaft dipasang pada ujung poros engkol (crankshaft) dan puli timing camshaft dipasang pada ujung exhaust camshaft. Exhaust camshaft digerakan timing camshaft dipasang pada ujung exhaust camshaft. Exhaust camshaft digerakan oleh poros engkol melalui timing belt, intake camshaft digerakan oleh gigi-gigi yang oleh poros engkol melalui timing belt, intake camshaft digerakan oleh gigi-gigi yang berkaitan pada intake dan exhaust camshaft, jumlah dari gigi camsahft timing pulley berkaitan pada intake dan exhaust camshaft, jumlah dari gigi camsahft timing pulley dua kali dari gigi crankshaft timing pulley yang mana sumbu nok hanya berputar satu dua kali dari gigi crankshaft timing pulley yang mana sumbu nok hanya berputar satu kali untuk setiap 2 kali putaran poros engkol. Bila poros engkol berputar menyebabkan kali untuk setiap 2 kali putaran poros engkol. Bila poros engkol berputar menyebabkan
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
2.
2. Model Timing ChainModel Timing Chain
Model ini dipergunakan pada mesin OHC (Over Model ini dipergunakan pada mesin OHC (Over Head Camshaft) dan DOHC (Dual Over Head Head Camshaft) dan DOHC (Dual Over Head Camshaft) sumbu noknya terletak diatas Camshaft) sumbu noknya terletak diatas kepalasilinder, sumbu nok digerakan oleh rantai kepalasilinder, sumbu nok digerakan oleh rantai (timing chain) dan roda gigi sprocket sebagai (timing chain) dan roda gigi sprocket sebagai pengganti timing gear. Timing chain dan roda pengganti timing gear. Timing chain dan roda gigi sprocket dilumasi dengan oli. Tegangan gigi sprocket dilumasi dengan oli. Tegangan rantai (chain tension) diatur oleh chain rantai (chain tension) diatur oleh chain tensioner, chain vibration (getaran rantai) tensioner, chain vibration (getaran rantai) dicegah oleh chain vibration damper, sumbu dicegah oleh chain vibration damper, sumbu nok yang digerakan oleh rantai hanya sedikit nok yang digerakan oleh rantai hanya sedikit menimbulkan bunyi disbanding dengan roda menimbulkan bunyi disbanding dengan roda gigi (gear driven ) dan jenis ini amat
gigi (gear driven ) dan jenis ini amat popularpopular
3.
3. Model Timing BeltModel Timing Belt
Sumbu nok (camshaft) digerakan oleh sabuk Sumbu nok (camshaft) digerakan oleh sabuk yang bergigi sebagai pengganti timing chain, yang bergigi sebagai pengganti timing chain,
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime. Rumus : Rumus :
(( ))
4
4
3 3 2 2Cm
Cm
S
S
D
D
V
Vss
Dimana : Dimana : DD == Diameter silinder Diameter silinder S
S == Langkah torak ( L ) Langkah torak ( L ) Vs
Vs == Volume silinder Volume silinder Contoh :
Contoh : Diketahui :
Diketahui : Vol Vol motor motor = = 1800 1800 Cm Cm 3 3 Jumlah silinder ( I ) = 4
Jumlah silinder ( I ) = 4 Diameter
Diameter silinder silinder = = 82 82 mm mm = = 8,2 8,2 cm cm Ditanyakan :
Ditanyakan : Langkah torak = ….? Langkah torak = ….? Jawab :
Jawab :
1800
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
B.
B. Perbandingan KompresiPerbandingan Kompresi
Pengertian Pengertian
Perbandingan kompresi ( tingkat pemampatan ) Perbandingan kompresi ( tingkat pemampatan ) adalah angka perbandingan volume diatas torak adalah angka perbandingan volume diatas torak saat saat torak di TMB dengan volume diatas torak saat torak torak di TMB dengan volume diatas torak saat torak di TMA
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
D.
D. EfisiensiEfisiensi
Input : Input :
Daya kalor yang Daya kalor yang
diberikan bahan bakar
diberikan bahan bakar 100%100%
Kerugian panas pada Kerugian panas pada sistem pendinginan
sistem pendinginan 30 %30 %
Kerugian g
Kerugian gas buang as buang panas + tek
panas + tekanananan 30%30%
Gesekan + Radiasi Gesekan + Radiasi 10 %10 % Out put Out put
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.
Trusted by over 1 million members
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial
Cancel Anytime.