Single overhead cam (also SOHC) refers to the internal combustion engine design where one camshaft is located above the valves. SOHC engines are generally (but not always) limited to two valves per cylinder, one for intake and one for exhaust.
History
In America
While modern domestic manufacturers have only recently begun a large-scale implementation of overhead cam technology, it has been used in some domestic production vehicles intermittently at least since the 1960's, when Kaiser-Jeep produced the 230 cid "Tornado" SOHC inline six engine. In the 1970's, both General Motors and Ford produced SOHC inline four engines: the GM 2300 engine and the Ford "Pinto" engine, respectively. In the 1980's and 1990's the trend accelerated.
José Joaquim Pinto da Silva
José Joaquim Pinto da Silva (2 de Abril de 1863 - 2 de Junho de 1928), que também assinava José Joaquim Pinto da Silva Sacavém (para se distinguir do homónimo, seu pai), foi o 2.º Visconde de Sacavém, título que foi renovado na sua pessoa por decreto de 10 de Abril de
