摘要:
Disclosed herein is an engine comprising an engine block, a crankshaft rotatably mounted on the engine block, having an axis, and including a cylindrical surface in excentric relation to the crankshaft axes, a plurality of cylinders supported by the engine block in a common plane and having respective axis extending radially from the crankshaft axis, which cylinders each have a radially outer end including an outlet valve, a plurality of pistons respectively movable in the cylinders, each of which pistons includes an air inlet valve, a plurality of connecting rods respectively pivotally connected to the pistons, and a drive hub rotatably mounted on the crankshaft surface and pivotally connected to the connecting rod such that crankshaft rotation causes reciprocation of the pistons in the cylinders and pumping of air into the cylinders through the inlet valves and out of the cylinders through the outlet valves.
摘要:
A two-stroke internal combustion engine of the type having separate fuel and oil pumps delivering their outputs for mixture prior to entering the carburetor, the oil pump having a variable output relative to the fuel pump output, and means responsive to the amplitude of the pressure wave in the engine crankcase to vary the output of the oil pump to optimize the fuel/oil ratio for the operating conditions.
摘要:
Disclosed herein is an inboard-outboard driving mechanism for a boat having a hull, the driving mechanism including a support adapted to be fixed relative to the boat hull, an engine mounted on of the support, a propulsion leg including a rotatably mounted propeller, and structure for connecting the propulsion leg to the support for pivotal steering movement about a steering axis. The inboard-outboard driving mechanism also includes apparatus for causing pivotal steering movement of the propulsion leg including a steering shaft rotatably journaled in the support, and gearing connecting the steering shaft and the propulsion leg for pivoting the propulsion leg in response to rotation of the steering shaft. The steering shaft is selectively rotated by a lever mounted on the engine for pivotal movement and having opposite ends, one of the ends being connected through a gear box to the steering shaft. A fluid motor mounted on the engine is connected to the other end of the lever, and the fluid motor is actuated by a fluid valve. The fluid valve is in turn actuated by movement of a conduit of a steering cable. The steering cable core is also connected through a rigid link to the lever for assisting pivotal movement of the lever.
摘要:
An electrically controlled shift and throttle system for a watercraft having multiple control stations is disclosed. The system has a number of control units having an elongated lever arm which can be moved in forward and reverse directions for shifting the transmission among forward, neutral, and reverse operating modes, as well as controlling the throttle of the engine for varying the operating speed thereof. The control units are electrically connected to a controller which also is electrically connected to a shift gear motor and throttle motor. Switches associated with each of the control units enables one of the control units to be selected as a master control unit and the nonselected control units then operate as slave units. During operation, the angular position of the master control unit lever arm is duplicated in the nonselected control units so that all control unit lever arms have the same angular orientation. A warm-up switch enables the throttle motor to be operated to vary the operating speed of the engine without shifting the transmission out of the neutral position.
摘要:
A marine propulsion device comprising an internal combustion engine, primary structure for supplying cooling water to the engine, and ancillary structure for supplying cooling water to the engine in response to the temperature of the engine exceeding a predetermined temperature and for continuing to supply cooling water to the engine until the ancillary structure is manually deactivated.
摘要:
A fluid pressure actuated motor assembly comprising a first fluid pressure actuated motor including a first reciprocating piston driven by a pressure differential across the first reciprocating piston, and a second fluid pressure actuated motor in communication with the first fluid pressure actuated motor and including a second reciprocating piston driven by the pressure differential across the first reciprocating piston.
摘要:
Disclosed herein is an outboard motor for a boat having a hull and including a support adapted to be fixed relative to the boat hull, and a propulsion assembly including a rotatably mounted propeller and being connected to the support for pivotal steering movement about a steering axis. The outboard motor also includes a pair of elongated members, coupled together for linear extension and retraction upon rotation of one of the elongated members with respect to the other of the elongated members, an end of one of the members being connected to the propulsion assembly for causing pivotal movement of the propulsion assembly about the steering axis, an assembly for fixing the other of the elongated members against longitudinal movement, and a push pull cable assembly for selectively causing rotation of one of the elongated members with respect to the other of the elongated members.
摘要:
A marine installation comprising a marine propulsion device including a propulsion unit having a lower unit supporting a propeller and a powerhead including a two-stroke internal combustion engine having an apparatus for feeding a fuel/oil mixture to the engine and including a fuel/oil mixture pump having an inlet and being operable to create suction at the inlet, a flexible hose releasably connected to and communicating with the inlet of the fuel/oil mixture pump, and a remote tank having an interior providing a fuel reservoir, having a fitting releasably connected to the flexible hose, having a top wall including a first opening which is adapted to afford filling of fuel into the interior of the tank and which is adapted to removably receive a cap covering the first opening, and a second opening spaced from the first opening, and having an oil storing, oil pumping and fuel/oil mixing device located in the tank and including an upper wall closing the second opening and being secured to the top wall of the tank, and having therein an opening which is adapted to afford filling of oil into the oil storing, oil pumping, and fuel/oil mixing device and which is adapted to removably receive a cap covering the opening in the upper wall, an endless wall depending into the tank from the upper wall to partially define an oil reservoir communicating with the upper wall opening, and an oil pumping and fuel/oil mixing apparatus secured to the depending wall to form the bottom of the oil reservoir and including a first inlet communicating with the oil reservoir, a second inlet communicating with the fuel reservoir, and an outlet communicating with the fitting.
摘要:
Disclosed herein is a marine propulsion device comprising a tilt hydraulic cylinder-piston assembly connected between a first member adapted to be attached to a boat and a second member connected to the first member for vertical swinging movement relative to the boat, and a trim hydraulic cylinder-piston assembly connected to the first and second members. Also provided is a hydraulic system connected to the tilt and trim hydraulic cylinder-piston assemblies for pressurization thereof.In one embodiment, the trim assembly includes a cylinder, a piston assembly located in the cylinder and having a first piston with a port therein and a second piston spaced axially from and fixedly connected to the first piston, together with a piston rod, means connecting the piston assembly to the piston rod for limited relative movement therebetween, valve means normally closing the port, and means for operating the valve means to open the port upon movement of the piston assembly to a predetermined position.In another embodiment, the trim assembly includes a cylinder, a piston assembly located in the cylinder, together with a piston rod, and means connecting the piston assembly to the piston rod for limited relative movement therebetween.
摘要:
Disclosed herein is a marine propulsion device comprising a lower unit, a swivel bracket on the lower unit adapted for connecting the lower unit to the transom of a boat for steering movement about a steering axis, a steering control on the lower unit adapted for steerably displacing the lower unit about the steering axis relative to a fore and aft position, a trim tab mounted on the lower unit rearwardly of the steering axis for pivotal movement relative to a position aligned fore and aft with the lower unit, and a linkage connected to the trim tab and responsive to pivotal steering displacement of the lower unit for pivotally displacing the trim tab relative to the lower unit in the same pivotal direction as steering displacement of the lower unit.