摘要:
A lubricating system for a four-cycle engine positioned within an engine compartment of a personal watercraft for powering a water propulsion unit thereof, is disclosed. The engine compartment, and engine therein, is accessible through a maintenance opening in deck of the watercraft. Preferably, the lubricating system includes an oil filter which is positioned at other than the bottom of the engine for access through the maintenance opening, such as at the front or rear end of the engine. In addition, the engine preferably includes an oil drain which is positioned below the oil filter for draining the oil from the engine.
摘要:
In an outboard motor, an engine is mounted to an upper portion of an engine holder. A crank shaft is vertically disposed in a crank case of the engine. A plurality of cylinders are arranged in a cylinder block of the engine in parallel with each other in a vertical direction. An oil pan is disposed in the engine holder, and a balancing device is mounted to a bottom surface of the cylinder block facing the oil pan. The cylinder block is disposed between the crank case and a cylinder head. The bottom surface of the cylinder block is recessed. In this recessed portion, a balancing device is disposed.
摘要:
A lubricant supply system is provided for the induction system of a marine propulsion engine. The lubricant supply system delivers lubricant to the a flow controlling valve in the induction system upon shutting down of the engine and can be operated manually at the discretion of a user. The lubricant serves to reduce the likelihood of post-operation corrosion of the valve, particularly at the sliding support surfaces of the valve and also provides lubricant from start-up operation.
摘要:
Disclosed herein is an outboard motor comprising a cylinder block including a lower horizontal drive shaft housing mounting surface, and a cylinder head mounting surface extending upwardly from the drive shaft housing mounting surface, a drive shaft housing including a peripheral outer surface including an upper end, a cylinder block mounting surface at the upper end, and a portion extending rearwardly from the cylinder block mounting surface and having therein a vertically open bore located forwardly of the outer surface, and a cylinder head comprising a cylinder block mounting surface fixed to the cylinder head mounting surface and including vertically spaced first and second recesses adapted to respectively form portions of first and second combustion chambers and respectively including first and second exhaust ports, a bottom surface extending transversely rearwardly from the cylinder block mounting surface of the cylinder head, a projection extending downwardly from the bottom surface and into the bore, and including an end surface having therein an exhaust gas outlet, and an internal exhaust passage extending between the exhaust ports and the exhaust gas outlet.
摘要:
A lubrication system for the internal combustion engine of a motorcycle that includes a pump that outputs a constant amount of fluid per cycle of operation and a delivery valve which selectively passes lubricant to the engine or returns lubricant back to the system to vary the amount of lubricant supplied by the lubricant pump. The system is designed so as to self purge air from the system by mounting the lubricant pump and the delivery valve in close proximity to each other and at a lower level than the lubricant storage tank. In addition, the engine is supplied with arrangement to preclude lubricant from draining into the engine through the delivery valve when the engine is not running.
摘要:
A snowmobile having a liquid cooled transversely disposed internal combustion engine comprised of two blocks each containing two cylinder in aligned fashion. The coolant pump for the engine is disposed on one side of the engine and communicates with cooling jacket inlets on the other side through conduits that extend through the crankcase for controlling the temperature of the crankcase.
摘要:
A system for operating a two-cycle spark ignition engine, comprising an ultrasonic atomizer that is disposed in an intake pipe of the spark ignition engine. When the engine is to be started, a fuel for starting is supplied to the ultrasonic atomizer, and after the engine has been started, a gas oil is supplied to the ultrasonic atomizer to atomize and spray it into the intake pipe, thereby enabling an increase in the flow rate of fuel atomized and sprayed by the ultrasonic atomizer and realizing combustion of gas oil, and thus achieving a lowering in the fuel cost, ensuring safety and making it possible to provide a lightweight emergency pump unit which is suitable for use in vessels, for example.
摘要:
An air-cooled single cross-flow cylinder head for motorcycle internal-combustion engines having a camshaft for valves controlling charge cycle ducts and with a scavenging direction S.sub.R aligned with the course of charge cycle ducts in the cross-flow cylinder head. The engine is provided with a relatively stiff valve drive with inlet and outlet valves and ducts arranged in planes which are essentially in parallel with respect to the scavenging direction and where the camshaft operates the valves by tappets arranged in driving connection with rocker arms in the cross-flow cylinder head.
摘要:
Two embodiments of motorcycles having improved exhaust systems. In each embodiment, the motorcycle includes a V-type engine and the exhaust system provides substantially equal length exhaust pipes that merge into a common exhaust outlet and which are disposed beneath the clutch and on the opposite side of the engine from the generator. In addition, one embodiment discloses an oil filter that is disposed above the clutch so as to be protected from the heat of the exhaust pipes by the clutch.