| 摘要 |
Planing amphibious vehicle ( 101 ) comprises engine ( 105 ) with internal cooling ducts ( 106 ). The engine is cooled first by air-water exchanger ( 102 ), and secondly by water-water exchanger ( 108 ). One or both exchangers may be located in compartment ( 119 ), separated from engine compartment ( 117 ) fully by bulkhead ( 80 ) (FIG. 4 ), or partially by bulkheads ( 118, 120 ). External water for exchanger ( 108 ) is drawn in from outside hull ( 109 ) through jet intake ( 114 ), the through inlet ( 115 ) in jet drive duct ( 116 ); and exhausted through outlet ( 123 ). Compartment ( 119 ) may also contain exhaust silencer ( 121 ). Numerals ( 103 and 104 ) denote grilles; ( 107 ) denotes cooling fan(s). FIG. 2 shows an alternative arrangement, with external water drawn from beneath the hull by pump ( 32 ). FIG. 1 shows front mounted radiator ( 2 ), covered by external flap ( 4 ) allowing air cooling to be shut down on water. FIG. 3 shows a water-water exchanger combined with the marine jet drive.
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