5 results about "Pressure level" patented technology

An internal combustion engine (1) for operation in a switchable manner with liquid fuel or gaseous fuel operates with pilot injection in the gas mode, wherein in the event that the injectors (5, 8) provided for the pilot injection in the gas mode and for the injection in liquid fuel mode are connected to a common accumulator (6), the pressure level thereof is lower for the pilot injection in the gas mode than for the operation with liquid fuel.

An apparatus for forming holes in ground and for placing hygroscopic particles into the holes is disclosed. The apparatus includes a first chamber configured to hold a liquid and a second chamber configured to hold the hygroscopic particles. A first pressure mechanism maintains the liquid in the first chamber at a first pressure level, and a second pressure mechanism maintains the hygroscopic particles in the second chamber at a second pressure level. A first valve is operable during a first time period to regulate the delivery of the liquid into a third chamber through a first opening. A second opening is configured to direct jets of liquid from the third chamber during the first time period to form holes in the ground. A second valve is operable during a second time period to regulate the delivery of the hygroscopic particles to the third chamber. The first valve is operable during a third time period to regulate the delivery of the liquid to the third chamber through the first opening causing jets of the hygroscopic particles to be directed through the second opening into the holes.

The invention discloses a Zr-Fe alloy for tritium storage and a preparation method thereof. The chemical formula of the alloy is Zr2-xTixFe1-y-zNiyCoz, wherein x, y and z represent the atomic ratios of Ti, Ni and Co replacing Zr and Fe correspondingly, x ranges from 0.01 to 0.05, y ranges from 0.01 to 0.05 and z ranges from 0.01 to 0.03. The preparation method of the Zr-Fe alloy comprises the following steps that (1) preparation is carried out according to the chemical formula, a vacuum non-consumable electric-arc furnace is adopted for carrying out turnover smelting 3-5 times, and a cast ingot is prepared; and (2) the smelted cast ingot is heated again into a smelted state, magnetic stirring is carried out for 2-5 min. The alloy is hydrogen storage alloy low in balance pressure, and has the beneficial effects that the room temperature balance pressure level is lower than 1 Pa, the hydrogen (tritium) adsorption and desorption rate is high, the cycle life is long, hydrogen induced disproportionation is resisted, and the hydrogen (tritium) storage capacity is large. In addition, the preparation method of the Zr-Fe alloy is easy to operate, easy to achieve and high in efficiency, andcompared with a common ZrCo alloy and ZrNi alloy, the cost is lower.