Chamber pressure

About: Chamber pressure is a research topic. Over the lifetime, 2988 publications have been published within this topic receiving 30725 citations.

IC engine oil pressure regulator - has piston control chamber connected to oil circuit pump assembly

Abstract: The oil pressure regulator in a variable compression piston control chamber is formed between an inner piston joined to a connecting rod and an outer piston adjusting on the inner piston The chamber is connected by channel to an oil circuit pump and chamber pressure is controlled by a pressure regulating valve working as a function of operating parameters The oil pump and regulating valve (20) complete a variable pump used to regulate the oil pressure in the control chamber (42) USE/ADVANTAGE - Ic engines, engine oil Space-saving design offers precise sensitive pressure control for all running conditions, reacting ahead of knocking onset

The blood - pressure in the eye and its relation to the chamber pressure.

Abstract: dealt with the bloodstream as a whole, and showed in a general way how it loses lateral pressure in travelling from the left ventricle to the right auricle. From the data thus gained we can now advantageously attack the problem of the blood-pressure in the eye. The two vascular tracts in the interior of the eye, the retinal and the uveal, are almost entirely separate from each other and must be considered separately. For each tract it will be well to determine, so far as may be possible, first, the arterial entrance-pressure, secondly, thevenous exit-pressure, and,thirdly, the relative resistances encountered in the arteries and veins respectively. In so far as we succeed in doing this we shall obtain the data for an estimate of the capillary pressures in these regions. The blood-pressure in the retina. The retina offers exceptional facilities for the enquiry. It is served almost exclusively by a single arterial and a single venous trunk, and the branches of these

Non-plasma type chamber cleaning method

Abstract: PROBLEM TO BE SOLVED: To provide a method for cleaning a process chamber of CVD or other types of not using gaseous PFC and a device therefor. SOLUTION: Molecular fluorine (F2 ) diluted with an inert carrier gas is introduced into a treating chamber to clean the chamber. One of embodiments is executed to heat at least a part of the chamber at >=400 deg.C, to introduce the diluted gaseous F2 into the chamber and to set the chamber pressure at 1 to 100Torr or a level above the range. At least a part of the chamber is heated to >=400 deg.C, by which the free fluorine having reactivity is formed from the dilute gaseous F2 and thermal reaction is effected between the dilute gaseous F2 and the deposits in the chamber. The deposits are removed by etching from the regions of the chamber or other regions where the undesired deposits are accumulated.

Control apparatus for use in automotive air conditioning system

Abstract: The present invention is directed to a control apparatus for use in an automotive air conditioning system which includes a variable capacity-type refrigerant compressor. The automotive air conditioning system comprises a refrigerant circuit including a refrigerant compressor with an externally controlled, variable capacity control mechanism; an evaporator connected to a suction chamber of the compressor; and a control apparatus which controls refrigerant circuit operation. The control apparatus includes an adjusting device for adjusting a control point of the compressor suction chamber pressure. During operation of the automotive air conditioning system, the control point of the compressor suction chamber pressure is adjusted to effectively maintain the temperature of air immediately downstream from the evaporator at the set temperature. In one situation in which the automotive air conditioning system is operated in a static thermodynamic condition of the evaporator, the control point of the compressor suction chamber pressure is adjusted to effectively converge the temperature of air immediately downstream from the evaporator to the set temperature. In another situation in which the automotive air conditioning system is operated in a dynamic thermodynamic condition of the evaporator, the control point of the compressor suction chamber is also adjusted to effectively converge the temperature of air immediately downstream from the set temperature. Accordingly, the passenger compartment of the automobile can be more effectively air conditioned during operation of the automotive air conditioning system.