EXHAUST MUFFLERS
PRESENCE OF CARBON. Any factor which impedes the free escape of burnt gas from the cylinders of a motor-engine when the exhaust valves open is a prolific source of power loss, because if portion of the burnt-out charge remains in the cylinder, obviously the quantity of new fuel which can be admitted for the next firing stroke is reduced, and the output of power from the engine suffers. So delicate is the response of an engine to these “back pressures” that even the employment of an ordinary silencer invariably causes small power losses. The®e, however, are often considerably greater than they should be through neglect of the silencer. The muffler chamber is one of the parts of a car least accessible to the owner, and, for this reason, the silencer often receives no attention through the life of the car. Consistent bad pulling, which is proved not to be caused by faulty valves or pistons, can often be traced to the partial blocking of the escape passages in the muffler by the accumulation of carbon. If excessive carbonisation in the silencer is suspected, the car should be handed over to a mechanic to remove the deposits.
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https://paperspast.natlib.govt.nz/newspapers/THD19321008.2.60.3
Bibliographic details
Timaru Herald, Volume CXXXVII, Issue 19308, 8 October 1932, Page 12
Word Count
198EXHAUST MUFFLERS Timaru Herald, Volume CXXXVII, Issue 19308, 8 October 1932, Page 12
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