Patent ID: 6019078
Filing Date: 2000-02-01
Classification: F02B,F02M

Abstract:
An outboard motor having a cowling and a water propulsion device, an internal combustion engine positioned in said cowling and arranged to propel said water propulsion device, said engine having a first and a second combustion chamber, said engine having an intake system for delivering a fuel and air charge to each combustion chamber, said intake system including a first intake passage leading through said engine to a first combustion chamber and a second intake passage leading through said engine to said second combustion chamber, said first intake passage positioned vertically above said second intake passage, and an intake manifold delivering said air and fuel mixture to said first and second intake passages, said intake manifold defining a main passage extending along a first axis, a first branch defining a passage leading from said main passage to said first intake passage, and a second branch defining a passage leading from said main passage to said second intake passage, said main passage dividing into said passages defined by said first and second branches at a bifurcation positioned along said axis, said passage of said first branch defined by a first wall part extending in a first direction from said bifurcation and at a first angle with respect to said first axis, and said passage of said second branch defined by a second wall part formed integrally with said first wall portion at said bifurcation and extending from said bifurcation opposite said axis and at a second angle from said first axis, said second angle exceeding said first angle.