3 results about "Vapor lock" patented technology

This invention provides an internal combustion engine that can suppress blockage of the oil inflow path caused by emulsions drawn into the filter and vapor lock caused by air drawn into the filter. In the internal combustion engine of this invention, the distance between the first intake port in the vertical direction and the lowest part of the oil pan is greater than the distance between the second intake port in the vertical direction and the lowest part. The valve position of the flow path switching valve can be switched between a first position and a second position. The first position is a position that connects the first intake port to the oil pump and disconnects the second intake port from the oil pump. The second position is a position that disconnects the first intake port from the oil pump and connects the second intake port to the oil pump. The control device switches the valve position to the first position (S11-S12) when the oil pump starts operating, and switches the valve position to the second position (S13-S14) after the internal combustion engine preheating is completed.

A cryogenic pump assembly comprising a centrifugal pump and an electric induction motor especially configured for transporting liquid hydrogen (LH2) from cryogenic LH2 storage tanks to various applications having a horizontal configuration that includes an offset discharge to prevent vapor lock. An integrated vacuum jacketed housing enclosing portions of the centrifugal pump and electric induction motor may be utilized to prevent heat loss, while another embodiment utilizes LH2 flowing through the electric induction motor to lubricate bearings as well as cooling the electric induction motor. The centrifugal pump may be either single-stage or multi-stage, wherein each stage unit comprises an impeller and diffuser connected to a diffuser housing. The pump and motor share a single motor / pump shaft. Another embodiment is the cryogenic pump assembly vertically submerged in a cryogenic LH2 storage tank or vertically submerged in a sump container attached either externally or internally to a cryogenic LH2 storage tank.