Effects of Manifold Shape

Effects of Manifold Shape Points : effects of manifold shape, problems related to exhaust system, problems in internal combustion engines, ic, engine, auto diesel There is mutual inter-cylinder interference of exhaust, which becomes more serious as the valve timing is made “longer” to improve breathing at high speeds. At low throttle openings and high manifold depressions there is a tendency of exhaust gas to be sucked back through are exhaust valve into the combustion chamber or even right through both valves into the manifold during the overlap period. Separating the exhaust. outlets and making use of kinetic effects in the gas stream improve the running improved even with standard valve timing. Figures below show different arrangements of manifolds.