How does the Ryco RC351 catchcan work?
CRD turbocharged diesel engine maintenance
Modern day CRD turbocharged diesel engines are using lighter oils and stronger emissions control systems, resulting in highly soot contaminated blow by and crankcase gasses. To lower emissions, positive crankcase ventilation and exhaust gas recirculation systems vent the air back into the intake manifold to be burnt again in the combustion chamber. These gasses contain soot, hydrocarbons, water vapour and other impurities that often build up inside the intake. A blocked intake full of sludge reduces power, fuel economy and lifespan of the engine, requiring an expensive trip to a mechanic.
Ryco has designed its RC351 catchcan to filter out the sludge, recirculating cleaned crankcase blowby air back into the intake. It’s easy to install, and are available as a plug and play solution for many popular diesel makes and models. Normally, it is fitted between the crankcase ventilation tube and the intake manifold recirculation inlet. The impurities are trapped in the particulate filter and drips down to the high capacity 310ml reservoir. The reservoir has an 8mm quick drain fitting so that oil and sludge can be easily and cleanly disposed of. The Ryco RC351 also comes with an internal relief valve that acts as a by-pass valve to regulate pressure for engine safety. One closes to prevent air rushing back in to the crankcase under engine overrun conditions. The other prevents oil from going back into the engine sump or intake manifold when the reservoir fills up with oil. For easy mounting in the engine bay, the RC351 comes with a quick connect bracket for easy install and removal for servicing.
When first installed, check and drain the catch can regularly to determine the crankcase output. Most CRD engines usually require a drain with every oil change or 10,000k, but If oil wetting occurs round the relief valve/by pass valve prior to servicing that is a sign that the catchcan will probably need draining.
The RC351 has undergone rigorous testing to meet ISO 17536, an international standard that sets the performance criteria for catch cans. Ryco has built a special machine that heats up engine oil and turns it into very fine droplets, simulating an extreme environment for the RC351. The rig can simulate up to 40,000kms of use in 30 minutes. The RC351’s performance more than exceeds the ISO 17536 standards by removing up to 98% of the oil droplets in the simulated rig.
Ryco has different vehicle specific fitting kits that allows the RC351 to be mounted to most modern diesel cars, as well as a universal version (RCC351K) for older petrol and diesel vehicles.
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