Matches 1 - 50 out of 81 1 2 >
Match Document Document Title
7316545 Reducing agent pump for an exhaust-gas aftertreatment system of an internal combustion engine  
A reducing agent pump has a pump inlet part and a pump outlet part closing off the pump body at its ends. One or both of the inlet and outlet parts is of two-part construction, with a closure...
7114335 Apparatus for controlling a hydraulic circuit for clutches  
Apparatus for controlling a hydraulic circuit to be used for operating hydraulic clutches with a pump ( 8 ) connected with a relevant reservoir ( 88 ) for the fluid of the hydraulic circuit and...
7033149 Medium pump adapted for ease of disassembly and assembly  
A medium pump for a motor includes a pump case with a pump cylinder and a pump piston positioned displacaebly in the pump cylinder in the direction of a pump axle. The pump piston rotates about the...
6913447 Metering pump with varying piston cylinders, and with independently adjustable piston strokes  
A metering pump includes an actuating mechanism, and a plurality of piston cylinders coupled to the actuating mechanism. A first of the cylinders has a working volume that differs from a second of...
6814548 Multiple piston engine with vibration reducing properties  
The invention relates to a piston engine which is essentially comprised of an engine shaft and a set of modules, each of which comprises a cylinder and a piston powered by the engine shaft in the...
6779984 Position sensor and compressor  
A position sensor is provided, particularly a sensor applicable to a linear compressor, for detecting the position of the piston and preventing the latter from knocking against the head located at...
6758657 Electromagnetically driven diaphragm pump  
A pump ( 10 ) has a housing which forms a pump chamber ( 17 ) having a wall ( 18 ). Inlet and outlet valve assemblies ( 19, 20 ) communicate with the chamber ( 17 ) and, respectively, allow fluid...
6644171 Variable compression connecting rod  
A connecting rod assembly is provided for varying a compression ratio of an internal combustion engine having a crankshaft and a piston. The connecting rod assembly includes a first portion adapted...
6619186 Servo controlled timing advance for unit pump or unit injector  
A hydraulically actuated servo piston and hydraulic advance piston are integrated into the cam follower of a unit pump or injector to provide variable advance for an injection event produced by the...
6536326 Control system and method for preventing destructive collisions in free piston machines  
In a free piston machine, initial collisions of the piston with structures at the end of the cylinder are detected and generate a change in the magnitude of a perturbation signal, which is applied...
6406269 Fuel pump  
A fuel pump comprises a pumping plunger reciprocable within a plunger bore under the action of a cam drive arrangement. The cam drive arrangement comprises first and second surfaces defining...
6210121 Method of calibrating a lost-motion metering pump  
A method of calibrating a lost-motion metering pump is disclosed wherein the pump includes a relief port, a movable hollow plunger having a bypass hole which is aligned with the relief port when...
6152113 High-pressure injector for a diesel engine  
A high-pressure fuel injector of a diesel engine includes a nozzle body, a pressure chamber body and a pressure piston. The nozzle body has a cavity in a central region thereof and a closed top end...
5647730 Self-contained, clearance-volume adjustment means for a gas compressor  
In association with a straight-cylinder, reciprocating gas compressor, hydraulic circuitry and valving is provided to track movement of an intake valve which cooperates with an end of the...
5644969 Wobble piston and cylinder arrangement  
A wobble piston usable in a cylinder comprising one or both of the confronting surfaces of wobble piston head or valve plate being convexly curved in the plane of the wobble motion and being...
5622486 Radially-valve compressor with adjustable clearance  
A radially-valved compressor wherein the fixed clearance of the compressor can be quickly and easily adjusted by adjusting the position of the suction and/or discharge valves in relation to their...
5496153 Method and apparatus for measuring piston position in a free piston compressor  
A method of measuring the distance at closest approach between the piston of a free piston compressor and the cylinder head. The method derives measurements of both the alternating and average...
5301597 Hydraulic cylinder  
A hydraulic cylinder, preferably for use as a master or slave brake cylinder or in a hydraulic clutch system, maintains in a simple and inexpensive manner through the use of eccentric bushings the...
5191862 Reciprocating piston with variable compression height for internal combustion engines  
A reciprocating piston is disclosed with variable compression height for internal combustion engines in particular. For structural simplification of the temperature-dependent change in the...
4979427 Temperature-sensitive variation of the compression ratio in pistons having variable compression height  
The invention relates to a piston having a variable compression height and two control chambers connected to each other through a hydraulic system. In order to achieve better cold-start and warm-up...
4930404 Very high pressure piston pump  
The very high pressure piston pump can compress a conveying agent (20) to a pressure of approximately 22 kbar. The high pressure sealing comprises a pressure-compensated ice sealing, which operates...
4844428 Air spring assembly  
An air spring assembly which includes a main air chamber and an interconnected auxiliary air chamber in which there is disposed a piston movable endwise thereof upon actuation of a reversible...
4809731 Liquid injection apparatus having an external adjustor  
A liquid additive injection pump has a hydraulic motor comprising a differential piston assembly reciprocable in a housing under the urging of a primary liquid into which an additive is to be...
4797073 Pump with rotating and reciprocating piston  
A plunger pump has a plunger adapted to slide in the axial direction and rotate by a combination of worm and worm wheel. A cylindrical pump body has an axial extension at one free end through which...
4782738 Compressor with adjustable head clearance  
A compressor includes a housing to which a cylinder and head structure is adjustably mounted by means of an adjustable spacer. By adjusting the compression on the head structure during assembly,...
4775299 Variable clearance pocket piston positioning device  
A clearance pocket having a housing attached to a cylinder of the compressor. In one embodiment, in which the housing has a sidewall and a distal wall and includes a clearance chamber with a...
4759263 Fluid operated cylinder device  
A fluid operated device includes a cylindrical housing whose opposing ends are closed by suitable end covers and which accommodates a piston rod supporting a piston and made of at least two parts...
4752190 Compressor cylinder head  
A compressor cylinder head assembly for a compressor which has a crankcase and a plurality of cylinders disposed in the crankcase. Each valve plate is spaced from the cylinder head by a valve plate...
4694732 Clearance pocket assembly  
In a first embodiment, the assembly includes a shallow, substantially figure eight-shaped chamber of intersecting bores with a pair of rotors journalled therein. The chamber has upper and lower,...
4685489 Valve assembly and compressor modulation apparatus  
A method and several embodiments of apparatus are disclosed for modulating the capacity of a gas compressor. A discharge valve member is formed with an opening therein and fluid communication...
4532685 Method of assembling a reciprocating compressor  
A method of assembling a reciprocating compressor, in which a piston for partitioning a cylinder into a compression chamber and a suction chamber is telescoped in the cylinder, a closure end plate...
4502844 Refrigerant compressor with mechanism for adjusting capacity of the compressor  
A reciprocating piston type refrigerant compressor is disclosed which includes a compressor housing having a cylinder block provided with a plurality of cylinders and a crank chamber adjacent the...
4480965 Capacity modulation device for compressor  
A simple capacity modulation device for a compressor is disclosed which includes a modulating member slidably disposed in a cylindrical enclosure associated with a compression chamber. Pressure...
4467605 Hydro-pneumatic actuator with automatic slack adjuster  
A two-stage, hydro-pneumatic actuator suitable for use as a railway vehicle brake. The hydraulic cylinder comprises a large diameter bore in which a low- and a high-pressure piston operate jointly...
4384826 Method and apparatus for controlling communication with a compressor unloader chamber  
A compressor unloader system and method is disclosed, comprising a pneumatically controlled one-way valve member for controlling communication between an unloader chamber and a compression chamber...
4248045 Means for selectively transmitting drive  
Drive is transmitted from a cam to a push rod via a body of liquid trapped between two pistons. A control element is normally urged against a seat by pressure in the body of liquid but can be...
4240386 Variable stroke engine or compressor  
A unique drive for an engine or compressor piston, including an angularly inclined piston wrist pin, an inclined throw along a crankshaft, a piston connecting rod therebetween being additionally...
4233000 Variable ratio intensifier  
An improved differential pressure hydraulic pressure convertor whose ratio of output pressure to input pressure may be easily varied comprising a valve housing, a pump housing having a cylindrical...
4208880 Hydraulic brake system for vehicles  
Disclosed is a hydraulic brake system for vehicles having a separated-type hydraulic fluid pressure amplifier, such as a hydraulic air servo or a hydraulic vacuum servo. This hydraulic brake system...
4145165 Long stroke pump  
A very high pressure pump apparatus which minimizes wear on the seals thereof and on valves connected thereto, by utilizing a very long stroke piston rod whose opposite ends are received in long...
4118152 Pump for variable dosing  
A variable dosing piston pump having a cylinder made of two parts, the fixed part through which the piston rod extends and a part adapted to be inserted more or less within said fixed part and...
4068562 Cylinder of piston compressor  
A cylinder of a piston compressor comprises a piston movable along the axis of the cylinder, a cylindrical admission valve and a cylindrical delivery valve. The admission valve communicates an...
4043710 Compressor unloader assembly  
An unloader assembly for a gas compressor having a compressor suction chamber and a compressor cylinder with a compressor piston slideable therein for effecting one-way gas flow through a suction...
3998570 Air conditioning compressor  
A piston type compressor for use in an automotive air conditioning system with variable pumping or compressing capacity which is automatically modulated in response to operating conditions....
3978672 Gas operated engine  
This is a multi-cylinder engine with a main piston and an auxiliary piston in each cylinder. The main piston is operated by means of compressed gas as a propellant. The auxiliary piston is operated...
3972652 Variable volume clearance chamber for compressors  
The improved clearance pocket or chamber for compressors described in this specification includes a hollow housing attached to the cylinder of the compressor. The housing is divided into two...
3945772 Pumps for transferring small quantities of dosed liquids  
The invention relates to a cylinder and plunger pump for transferring very small quantities of dosed liquids. The purpose of the invention consists in the realization of relatively small pumps of...
3938425 Pump stroke adjustment device  
A piston type fluid pump structure providing a selective variable operating fluid displacement, and including a piston having an operable travel, within a cooperable cylinder bore, through a pump...
3885889 Method and apparatus for reducing effective pumping capacity of a refrigerant vapor compressor  
The effective pumping capacity of a refrigerant vapor compressor is reduced by interposing a spacer plate between the valve plate and the cylinder block.
3884125 Variable displacement sealed pump  
A completely sealed magnetically driven pump having a piston armature driven by electrical windings. Mechanical variations are provided for variable displacement. A cylinder head is formed by a...
Matches 1 - 50 out of 81 1 2 >