10results about "Liquid fuel engines" patented technology

A fuel conditioning system for an engine comprises a plurality of mixing vessels that include an input mixing vessel and an output mixing vessel, at least one inlet for receiving fuel and water into the input mixing vessel and at least one outlet for supplying the fuel and water from the output mixing vessel to the engine. A conduit system is arranged to transfer the fuel and water through each of the mixing vessels from the input mixing vessel to the output mixing vessel. Each of the mixing vessels comprises an internal chamber containing a plurality of nebulizing members. The nebulizing members are configured to rotate about a rotational axis extending through the internal chamber to nebulize the fuel and water therein. One or more magnets disposed in the internal chamber to attract ferromagnetic substances present in the fuel and / or water.

To disclose embodiments that relate generally to systems and methods of operating internal combustion (IC) engines, and more specifically to systems and methods of starting compression ignition (CI) engines when a surrounding environment is significantly colder than a normal operating temperature of the engine (i.e., "cold-start").SOLUTION: In some embodiments, the CI engine can include an ignition-assist device. In some embodiments, a method of operating the CI engine during cold-start can include opening an intake valve to draw a volume of air into the combustion chamber, moving a piston from a bottom-dead-center position to a top-dead-center position in a combustion chamber at a compression ratio of between about 15 and about 25, injecting a volume of fuel, the fuel having a cetane number of less than about 30, closing the intake valve, and combusting substantially all of the volume of fuel.SELECTED DRAWING: Figure 2

Embodiments described herein relate to systems and methods of operating internal combustion (IC) engines by combusting various fuel chemistries therein. Specifically, engines described herein can operate a wide range of fuel chemistries with varying molecular formulas. The chemical compositions of the fuels described herein make them more difficult to ignite than long chain hydrocarbons (i.e., fuels that include 6 or more carbon atoms in a molecule). In some embodiments, engines described herein can combust fuels that have the chemical properties of alcohols. In some embodiments, engines described herein can combust fuels that include hydroxide groups. Examples of such fuels include methanol and / or ethanol. In some embodiments, engines described herein can combust natural gas. These fuel chemistries are difficult to ignite, particularly at low temperatures and during initial engine startup. Systems and methods described herein address these ignition difficulties, particularly in diesel engine architectures.

A neat-fuel direct-injected compression ignition engine having a thermal barrier coated combustion chamber, an injection port injects fuel that satisfies a stoichiometric condition with respect to the intake air, a mechanical exhaust regenerator transfers energy from exhaust gas to intake compression stages, an exhaust O2 sensor inputs to a feedback control to deliver quantified fuel, a variable valve actuation (VVA) controls valve positions, an exhaust gas temperature sensor controls exhaust feedback by closing the exhaust valve early according to the VVA, or recirculated to the chamber with an exhaust-gas-recirculation (EGR), heat exchanger, and flow path connecting an air intake, a load command input, and a computer operates the EGR from sensors to input exhaust gas according exhaust temperature signals and changes VVA timing, the load control is by chamber exhaust gas, the computer operates a fuel injector to deliver fuel independent of exhaust gas by the O2 signals.

A duel-fuel large diesel engine is proposed, comprising at least one cylinder having a combustion chamber, wherein a piston is arranged in the cylinder for a reciprocating movement between a top dead center position and a bottom dead center position, wherein the cylinder is provided with a first fuel injector (10) for injecting a first fuel into the combustion chamber, and a second fuel injector (20) for injecting a second fuel into the combustion chamber, wherein the first fuel is different from the second fuel, the large diesel engine further comprising a first fuel supply system (5) for supplying the first fuel to the cylinder and a second fuel supply system (7) for supplying the second fuel to a fuel distribution system (6), wherein the fuel distribution system (6) is configured to deliver the second fuel from the second fuel supply system (7) to the second fuel injector (20). A purge line (9) is provided connecting the first fuel supply system (5) to the fuel distribution system (6), wherein a switching member (8) is provided for opening and closing a flow connection through the purge line (9). Furthermore, a method for operating such an engine is proposed.

A fuel conditioning system for an engine comprises a plurality of mixing vessels, including an inlet mixing vessel and an outlet mixing vessel, at least one inlet for receiving fuel and water into the inlet mixing vessel, and at least one outlet for supplying fuel and water from the outlet mixing vessel to the engine. A piping system is arranged such that the fuel and water are conveyed through each of the mixing vessels from the inlet mixing vessel to the outlet mixing vessel. Each of the mixing vessels includes an inner chamber containing a plurality of atomizing elements. The atomizing elements are configured to rotate about an axis of rotation passing through the inner chamber to atomize the fuel and water within it. One or more magnets are arranged in the inner chamber to attract ferromagnetic substances present in the fuel and / or water.

A fuel conditioning system for an engine includes a plurality of mixing vessels including an input mixing vessel and an output mixing vessel, at least one inlet for receiving fuel and water into the input mixing vessel and at least one outlet for supplying the fuel and water from the output mixing vessel to the engine. A conduit system is arranged to transport the fuel and water from the input mixing vessel to the output mixing vessel through each of the mixing vessels. Each of the mixing vessels includes an internal chamber housing a plurality of atomizing members. The atomizing members are configured to rotate about an axis of rotation extending through the internal chamber to atomize the fuel and water in the internal chamber. One or more magnets are disposed within the internal chamber to attract ferromagnetic material present in the fuel and / or water.

A fuel conditioning system for an engine comprises a plurality of mixing vessels that include an input mixing vessel and an output mixing vessel, at least one inlet for receiving fuel and water into the input mixing vessel and at least one outlet for supplying the fuel and water from the output mixing vessel to the engine. A conduit system is arranged to transfer the fuel and water through each of the mixing vessels from the input mixing vessel to the output mixing vessel. Each of the mixing vessels comprises an internal chamber containing a plurality of nebulizing members. The nebulizing members are configured to rotate about a rotational axis extending through the internal chamber to nebulize the fuel and water therein. One or more magnets disposed in the internal chamber to attract ferromagnetic substances present in the fuel and / or water.

A fuel conditioning system for an engine includes a plurality of mixing vessels including an input mixing vessel and an output mixing vessel, at least one inlet for receiving fuel and water into the input mixing vessel and at least one outlet for supplying the fuel and water from the output mixing vessel to the engine. A conduit system is arranged to transport the fuel and water from the input mixing vessel to the output mixing vessel through each of the mixing vessels. Each of the mixing vessels includes an internal chamber housing a plurality of atomizing members. The atomizing members are configured to rotate about an axis of rotation extending through the internal chamber to atomize the fuel and water in the internal chamber. One or more magnets are disposed within the internal chamber to attract ferromagnetic material present in the fuel and / or water.

A duel-fuel large diesel engine is proposed, comprising at least one cylinder having a combustion chamber, wherein a piston is arranged in the cylinder for a reciprocating movement between a top dead center position and a bottom dead center position, wherein the cylinder is provided with a first fuel injector (10) for injecting a first fuel into the combustion chamber, and a second fuel injector (20) for injecting a second fuel into the combustion chamber, wherein the first fuel is different from the second fuel, the large diesel engine further comprising a first fuel supply system (5) for supplying the first fuel to the cylinder and a second fuel supply system (7) for supplying the second fuel to a fuel distribution system (6), wherein the fuel distribution system (6) is configured to deliver the second fuel from the second fuel supply system (7) to the second fuel injector (20). A purge line (9) is provided connecting the first fuel supply system (5) to the fuel distribution system (6), wherein a switching member (8) is provided for opening and closing a flow connection through the purge line (9). Furthermore, a method for operating such an engine is proposed.