6results about "Timed pressure lubrication" patented technology

A large engine, in particular a marine engine or a power plant engine, and a method of lubricating the engine using spray injectors, in particular SIP injectors. According to the method, a controller is provided which is configured to vary and control the pressure in the lubricant supply conduit within a desired pressure range, and the desired pressure depends on a measurement of the engine load and the actual pressure in the lubricant supply conduit.

The invention discloses a lubricating system capable of accelerating degassing and shortening engine oil pressure establishment time, relates to the technical field of engine oil lubrication, and solves the technical problem that an existing engine starting mode easily causes irreversible initial wear to an engine. The system comprises an electric pre-feed oil pump oil inlet pipe, an electric pre-feed oil pump oil outlet pipe and an electric pre-feed oil pump, the oil pan pipeline connector is connected with the electric pre-supply oil pump through the electric pre-supply oil pump oil inlet pipe, the electric pre-supply oil pump is connected with the engine oil filter through the electric pre-supply oil pump oil outlet pipe, and the engine oil filter is connected with a main oil duct of an engine through the engine oil filter oil outlet pipe and the main oil duct supply oil pipe. Before an engine is started, a pre-oil-supply strategy is triggered to quickly start the engine. Direct friction between metal parts of the engine is reduced, and abrasion and power loss are reduced.

A large engine, in particular a marine engine or a power plant engine, and a method of lubricating the engine with an injector. The invention relates to a method and an engine, both configured for cyclic operation in which pressurized liquid is provided by a common rail system in an injection phase, in which all injectors are connected to a lubricant supply conduit, in which the method and engine are configured to operate within a range of parameters in which the values of six parameters are selected such that the cavitation number is less than 1.5 such that, for the intended operation, the number of injectors is less than 1.5. The ratio of the resultant force acting on the valve needle to the mass of the valve needle is higher than 50 m / s < 2 >.

A large engine, in particular a marine engine or engine for power plants, and a method of lubricating the engine with injectors. The method and engine are arranged for cyclic operation and cyclic operation and in the injection phase, providing pressure-liquid through a common rail system where all injectors are connected to the lubricant supply conduit and wherein the method and engine is arranged for operating within the following parameters:and wherein the values of the six parameters are selected so that the cavitation number is smaller than 1.5 and so that the ratio of the resulting force acting on the needle to the mass of the needle is above 50 m / s2 for the intended operation.

A lubricant supply assembly for a gaseous fuel internal combustion engine, comprising a pressure source module (10) and at least one lubricant doser (31) arranged to release lubricant into a gaseous fuel flow, the lubricant doser including a pumping chamber (35) communicating with a lubricant outlet port (38), and a pumping plunger (34) that is adapted to displace lubricant from the pumping chamber in order to release a defined volume of lubricant during a delivery process, a supply port (36) from which low-pressure lubricant is fed to the pumping chamber and a control port (42) where high-pressure lubricant may be applied to actuate the pumping plunger, wherein the pressure source module comprises: • - a lubricant tank (12) for storing liquid lubricant; • - a first port (12a) fluidly coupled to the supply port of the lubricant dozer; • - a second port (12b) fluidly coupled to the control port of the lubricant dozer; • - a pump (14) in fluid communication with the lubricant tank, the first port and the second port, the pump being operable at a first pressure level P 1 and at a second pressure level P 2; • - a shutoff valve (16) arranged to selectively enable flow from the pump to the first port; and • - a check valve (18) configured to enable flow from the pump to the second port; the check valve having an opening pressure P v, which is greater than the first pressure level P 1 and smaller than the second pressure level P 2.

A large engine, in particular a marine engine or engine for power plants, and a method of lubricating the engine with spray injectors, in particular SIP injectors. According to the method there is provided a controller arranged for varying and con- trolling the pressure in the lubricant supply conduit within a desired pressure range and basing the desired pressure on the engine load and a measurement of the actual pressure in the lubricant supply conduit.