Cylinder (engine)

About: Cylinder (engine) is a research topic. Over the lifetime, 93405 publications have been published within this topic receiving 478053 citations. The topic is also known as: (Cylinder Sleeving) & (cylinder liner).

Direct cylinder injection spark ignition engine

Abstract: PURPOSE: To heat a catalyst quickly to an active temperature by operating again a fuel injection valve of an engine to inject additionally fuel and mixing the fuel in exhaust to again ignite the fuel while an intake valve is closed in an expansion or exhaust stroke of the engine. CONSTITUTION: Tips of fuel injection valves 47-50 are provided in an engine body 10 to open to the insides of respective combustion chambers 24-30. Also, the combustion chambers 24-30 are provided respectively near the tops with ignition plugs 51-54. While an ECU 22 receives the signals showing loads of an engine such as the rotational frequency Ne of the engine, accelerator opening θA, etc., from respective sensors, it receives the input of catalyst temperature Tcat from a temperature sensor 55 provided in a catalyst converter 20. When the catalyst temperature is lower than a predetermined desired one, additional fuel is injected into the combustion chambers 24-30 to be mixed with exhaust in an expansion or exhaust stroke and the exhaust mixed with additional fuel is reignited for combustion upstream of the catalyst converter 20 to heat the catalyst to the desired temperature. COPYRIGHT: (C)1992,JPO&Japio

Current-induced oscillations and instabilities of a multi-tube flexible riser: water tunnel experiments

Abstract: Experiments have been conducted on a five cylinder riser cluster in a steady water cross-flow; the geometry of the riser is similar to one previously investigated in air-flow. In the majority of the experiments the central cylinder and three of the four outer cylinders were sensibly rigid with the remaining peripheral cylinder being flexibly mounted. The flexible cylinder vibration was monitored in the radial and tangential directions. The complete riser bundle was mounted on a rotative arrangement, so that the flexible cylinder could be set at any desired azimuthal orientation to the flow vector. Other experiments were conducted with a fully rigid bundle where hot-film anemometers were used to measure periodicities in the flow within and downstream of the cluster. Three different sets of Strouhal numbers were detected for the cluster.

Electric immersion heater for stock tanks

Abstract: The invention comprises electrically heated cylinders to be placed immersed in the bottom of a tank of water. The heated cylinder is electrically heated by an electric heating element mounted within the heating cylinder. The heated cylinder has means to support the cylinder with one end slightly higher than horizontal from the other end. The upper end of the heating cylinder has radially directed outlet hole means directing water from within the cylinder out of the cylinder back into the water in the tank in at least three different directions. The three different directions are in a path laterally outward from the longitudinal axis of the cylinder in at least approximately 90 degree intervals to one another. The upper end of the cylinder has closure means to cause water within the cylinder to be directed out radially directed outlet means. The lower end of the cylinder has water inlet means whereby water may travel into the water inlet means along the heating element to be heated and travel out the radially directed outlet hole means in at least three different directions, an electric cord is provided having circuit wires from the surface to the heating element to engergize the heating element. A thermostatic switch is mounted to the cord at a location spaced away from the heated cylinder and near the surface of the water in the tank and the switch is connected to one of the current wires in the cord to control the action of the heating element.

Mechanical quick-release mechanism for spring-loaded brake cylinders

Abstract: A manually operable quick-release mechanism for use with a spring-loaded brake cylinder including an energy-storing piston operable by fluid pressure to a brake release position with a ball type clutch for locking said piston and a piston rod in said brake release position, and a manually rotatable member effective, when angularly displaced, for releasing the ball clutch and the piston and allowing the piston and piston rod to move to a brake-applying position.

Gas compression cylinder as nitrogen spring has control element in cylinder to control force flow by producing or release connection between upper and lower chambers as cylinder moves from position on lid towards base

Abstract: The force flow is controlled through a control element mounted in the cylinder (Z) so that when the piston is moved from a position on the lid (1c) towards the base (1a) a connection is produced between the lower chamber (3) and the upper chamber (4) and the force flow is reduced or kept constant or the connection between the two chambers is interrupted and the force flow is then increased. The control element is formed by a control rod (5) which engages in one of the bores in the piston.