Abstract:
A silencer (143) is disclosed that reduces the acoustic energy of a fluid mixture (111) of a liquid coolant (109) and of exhaust gas (107) from an engine. The engine may be a marine engine. The silencer (143) according to this aspect includes a receiving chamber (171) that receives the fluid mixture (111) and exhaust gas (107), at least one lifting conduit (175); and a separation chamber (173). The lifting conduit (175) has a receiving portion (177) with a first opening (179) and an expelling portion (181) with a second opening (183). The receiving portion (177) is fluidly coupled with the receiving chamber (171) so that the fluid mixture (111) enters the first opening (179) from the receiving chamber (171) and is lifted through the lifting conduit (175) to the expelling portion (181). This lifting may be accomplished, at least in part, by dynamic effects. The separation chamber (173) is fluidly coupled with the second opening (183) of the lifting conduit (175), and has at least one interior surface (185). The expelling portion (181) of the lifting conduit (175) is disposed so that fluid mixture (111) expelled from the second opening (183) is directed toward the at least one interior surface (185) of the separation chamber (173). The at least one interior surface (185) may dynamically separate, for example by linear momentum effect or centrifugal effect, at least a portion of the exhaust gas (107) from the fluid mixture (111).
Abstract:
A four stroke internal combustion engine includes a cylinder head having a valve train having reduced profile that permits access to a spark plug assembly located therein.
Abstract:
The four stroke internal engine having an air intake system connected to the cylinder head and operatively connected to the intake passageway. The air intake system includes an air intake manifold having symmetrical construction with a central air passageway extending between a first end and a second end. At least one passageway extends from the central air passageway to a free end, which is operatively coupled to the intake passageway. The air intake system is usable for both a supercharged and normally aspirated engines.
Abstract:
The invention concerns an engine cooling system that comprises a cooling circuit (8) and an evaporative cooling arrangement (9). The cooling circuit (8) has a cooling capacity provided by exchanging the heat generated by the engine with ambient air. The evaporative cooling arrangement (9) has a cooling capacity provided by dissipating the heat generated by the engine, by vaporisation of a vaporising coolant in a boiler. The cooling capacity of the evaporative cooling arrangement (9) is such that with the cooling capacity of the cooling circuit (8), the global capacity of the cooling system can match, at least peak, cooling demands. As the cooling capacity of the cooling system is divided between the capacity of the cooling circuit and the capacity of the evaporative cooling arrangement, the capacity of the cooling circuit can be reduced in comparison to a conventional cooling circuit which has to match alone peak cooling demands.
Abstract:
A four stroke internal combustion engine having a flexible arrangement is disclosed such that the engine can be easily configured for supercharged or normally aspirated operation. The engine includes a cooling system that includes both closed loop and open loop cooling systems for improved cooling efficiency. A power take off housing located on one end of the crankcase. Various engine components are operatively coupled to the crankshaft within the power take off housing including a cam shaft for a valve actuation assembly, a generator, an engine starting mechanism, a balance shaft, and a supercharger. The engine contemplated in accordance with the present invention also includes a dry sump lubrication system having lubricant separator for separating lubricant from blow-by gas within the engine.
Abstract:
A device for cooling a supercharged marine diesel engine with seawater, in which sufficient power can be outputted and fuel can effectively be cooled by a fuel cooler even when the engine is sharply accelerated after warming-up or is run under heavy load with a valve device provided in the bypass. For this purpose, a second bypass (10) is provided for the thermostat (5) disposed on the outlet passage of the seawater pump (4) so as to connect the upstream side of the thermostat to the downstream side thereof, and a valve device (90) is disposed in the bypass. A fuel cooler is provided on the outlet passage of the seawater pump and connected to the engine and fuel tank with a fuel passage.
Abstract:
A supercharged four stroke internal combustion engine. The engine includes a power take off housing located on one end of the crankcase. A supercharger for boosting air intake to an air intake manifold is mounted to the power take off and operatively connected to the crankshaft within the power take off housing. A personal watercraft having a supercharged engine is also disclosed.
Abstract:
A four stroke internal combustion engine is disclosed having a lubrication system for circulating lubricant within the engine. The engine further includes a system for separating lubricant from blow-by gas within the crank case.
Abstract:
A four stroke internal combustion engine is disclosed having a power take off housing located at one end of the engine. A crankshaft is operatively connected to a drive shaft and the cam shaft within the power take off housing. Furthermore, the crankshaft is operatively coupled within the power take off housing to at least one of a generator, an engine starting mechanism, a balance shaft, and a supercharger.
Abstract:
L'objet de l'invention concerne un agencement d'échangeurs de marinisation d'un moteur marin, comprenant un bloc moteur (10) avec des cylindres en ligne ou des cylindres en Vé, refroidi par un fluide de refroidissement (FR), au moins un turbocompresseur (16) avec une chambre chaude (16-1) reliée à une sortie (18) et une chambre froide (16-2) reliée aux cylindres du bloc moteur, un inverseur (14) comprenant un carter et contenant de l'huile, caractérisé en ce qu'il comprend: - une durite (22) d'amenée de l'eau de refroidissement (ER), - un échangeur de turbocompresseur (20-1), - un échangeur moteur (20-2), - un échangeur d'inverseur (20-3), - une durite (22-3) d'évacuation de cette eau de refroidissement (ER) vers une sortie des gaz de combustion (18), en aval de la chambre chaude (16-1) des au moins un turbocompresseur (16), ces trois échangeurs étant disposés dans cet ordre et interposés suivant le sens de circulation de l'eau entre la durite d'amenée de l'eau de refroidissement (ER) et la durite d'évacuation de cette même eau de refroidissement.