subjectnya saya ganti ya, biar keliatan lebih "greng" wakakak... Sip Om Marcel. berarti sama sekali gak ada hubungannya sama pelumasan yah. jadi tinggal apakah kita mau ikut kementrian lingkungan hidup, ato ikut aliran kaki kanan huehehe... kalau begitu, OCT ini jalan tengah lah, udara udah bersih oli, tapi gak dilepas ke udara bebas, tetep dibakar lagi. Cuman ya itu, suhu udara yang masuk ke intake tentunya panas, mending langsung ngambil dari luar pake breather huehehe...
adi. ----- Original Message ----- From: Marcel Brata® To: Baleno millis Sent: Friday, April 09, 2010 11:04 AM Subject: Re: [baleno] Oot : Oil Catch Tank made in Cianjur by Twin Garage Sebenarnya mengenai blow-by gass ini kalo dulu saya diterangkan waktu training bisa menyebabkan polusi jika langsung dilepas ke udara. Oleh karena itu gas ini "diakali" dengan cara dibakar kembali ke ruang mesin agar dapat ditekan polusinya... Tp ya sebenarnya konsekuensinya power agak turun karena udara masuk yg ke intake manifold tidak murni udara bersih, melainkan ada sebagian udara sisa pembakaran "blow by gas" ini... Cmiiw yah.. Berikut hasil googling di wikipedia: As an engine operates, high-pressure gases are contained within the combustion chamber and prevented from passing into the crankcase (containing the crankshaft and other parts) between the side of the piston and the cylinder bore by piston rings which seal against the cylinder. However, some amount of gas always leaks past the piston rings into the crankcase. This amount is very small in a new or properly rebuilt engine, provided that the piston rings and cylinder walls are correctly "broken in", and increases as the engine wears. Scratches on the cylinder walls or piston rings, such as those caused by foreign objects entering the engine, can cause large amounts of leakage. This leaked gas is known as blow-by because the pressure within the cylinders blows it by the piston rings. If this blow-by gas could not escape then pressure would build up within the crankcase. Before the invention of crankcase ventilation in 1928, the engine oil seals were designed to withstand this pressure, oil leaking to the road surface was accepted, and the dipstick was screwed in. The hydrocarbon rich gas would then diffuse through the oil in the seals into the atmosphere. Subsequently, it became an emissions requirement as well as a functional necessity that the crankcase have a ventilation system. This must maintain the crankcase at slightly less than atmospheric pressure and recycle the blow-by gas back into the engine intake. However, due to the constant circulation of the oil within the engine, along with the high speed movement of the crankshaft, an oil mist is also passed through the PCV system and into the intake. The oil is then either burned during combustion, or settles along the intake tract, causing a gradual build-up of residue inside the inlet path. For this reason many engine tuners choose to replace the PCV system with an oil catch can and breather filter which vents the blow-by gases directly to atmosphere and retains the oil in a small tank (or returns it to the sump), although this technically fails to meet most engine emission legislation. Best Regards, Marcel Brata phone : 021 93501137 / 0838 960 18796 ym : marcel_brt BBM : 214dec1e http://www.pancajulangjaya.com Sent from my BlackBerry® smartphone Powered by PJM
