| 摘要 |
Efficiency leading to saving in transportation is a must at this competitive era. The choice of an automotive vehicle as a transportation means in mining, plantation, and forestry entails a special tactics in order to minimize the operational, maintenance and replacement cost of the air filter used in its internal combustion engines, especially the air filter whose entire parts should be replaced when its clogged filtering medium (7) is replaced. The air filter presently invented is a knocked-down air filter, i.e., an air filter whose part that should be replaced is its filtering medium (7) and inner mesh (6) only which are bound together by lower rubber (5) and upper rubber (8). Its other parts such as lower housing (1), upper housing (9), perforated plate (3) and reinforcing pile (4) are not necessarily replaced. A manually opened and closed locker (11) unite this knocked-down air filter as a single unit.
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