Abstract: A fuel injection system for internal combustion engines, having a high-pressure pump, whose pump work chamber can be made to communicate on the intake side with a fuel tank via a supply line and on the compression side with a common rail via a high-pressure line, from which common rail a plurality of injection lines lead away to the individual injection valves, and having one pressure valve each in the supply line and the high-pressure line, by way of which a return flow of fuel out of the pump work chamber into the supply line and out of the high-pressure line into the pump work chamber is prevented. The pressure valve of the supply line and the pressure valve of the high-pressure line are disposed in a common valve combination.

Abstract: The present invention relates to a new compound of formula I ##STR1## with one of the symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 representing OH, whereas the remaining symbols represent H; to a pharmaceutical composition containing the said compound, and to the use of said compound as anti-parasital, anti-bacterial, anti-fungal agent.The Prior ArtNitrothiazole compound PH 5776 (2-(acetolyloxy)-N-(5-nitro 2-thiazolyl) benzamide) is a compound of formula II ##STR2## in which R.sub.1 =O--COCH3 R.sub.2 =R.sub.3 =R.sub.4 =R.sub.5 =HThe preparation and uses of this compound are disclosed in U.S. Pat. No. 3,950,351, as well as in publication made by Applicant.In U.S. Pat. No. 3,950,351, the compound of formula II is prepared by reacting ##STR3## This reaction is not suitable for the preparation of pure compound of formula I ##STR4## in which one of the symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represent OH, whereas the remaining symbols represent H.

Abstract: An electrically controlled fuel injection pump for internal combustion engines having a pump piston disposed and guided in a pump housing and defining a pump chamber and in its pumping stroke pumping fuel, delivered to this pump work chamber by a feed pump to an injection nozzle as long as a quantity control valve blocks the flow of the fuel otherwise overflowing from the pump work chamber via a metering line to a low-pressure chamber. A housing part receiving the quantity control valve and projecting laterally from the pump housing at the level of the pump housing, into which part the metering line leading to the pump work chamber extends, wherein lateral recesses on the projecting housing part are provided, which are engaged in forked fashion by a fastening cuff for the quantity control valve. The fastening cuff being provided with an internal thread and cooperating with a screw sleeve having an external thread.

Abstract: A fuel injection apparatus for internal combustion engines, having a pump piston, which is guided in a cylinder bore and driven to reciprocate by a cam drive. The pump piston defines a pump work chamber with its face end. The pump work chamber communicates with an injection valve via a pressure conduit and is supplied with fuel and relieved via a fuel line. The cam drive acts upon the pump piston via a rocker bolt, a tappet bolt, and a tappet insert, and the connections from the tappet bolt to both the rocker bolt and the tappet insert are embodied in the manner of ball joints. For simple installation of the tappet bolt, it is axially secured in relation to the rocker and to a tappet sleeve, which receives the tappet insert, via securing elements having elastic stretching properties, which expand to the size of the outer diameter of the ball head when a certain force is exerted, so that the tappet bolt can be installed and removed without disassembling the whole pump.

Abstract: The present invention relates to a composition and a galenic formulation suitable for combatting affections of the lower abdomen, for example intestinal conditions such as diarrhea, said composition or formulation containing:(a) an effective amount of a compound of formula I ##STR1## (b) at least one wetting agent, and preferably (c) a starch derivative.

Abstract: A fuel injection apparatus for internal combustion engines, having a pump piston, axially guided in a cylinder bore of a pump housing, driven in a reciprocating manner by a cam drive; the pump piston defines a pump work chamber with its face end. The pump work chamber communicates with an injection valve via a pressure conduit and fuel from a reservoir is fed in and removed via a fuel line that has a feed pump; the triggering of the supply onset and end of supply of the unit fuel injector is achieved by means of a magnet valve inserted in the feed line in the region of the pump housing. In order to prevent the deposit of dirt particles in the pump, the unit fuel injector has a fuel filter in the pump housing, which is inserted in a diversion chamber below the magnet valve, and upstream of which a baffle plate is provided in the direction of the magnet valve to protect the filter from the intense diversion stream.

Abstract: In a fuel injection device, in particular a unit fuel injector, for injecting fuel into fuel-injected internal combustion engines, in which the control of the onset and end of supply is effected by a magnet valve incorporated between a low-pressure circuit and a work chamber of the pump piston. A scavenging bore is provided that can be connected to the work chamber and communicates with a low-pressure chamber or the tank, and a delivery bore of the delivery line originating at the magnet valve intersects the guide bore of the pump piston, instead of providing a separate scavenging bore, the part of the delivery bore remote from the magnet valve and located downstream of the intersection with the guide bore of the piston is utilized as a scavenging bore.

Abstract: A compound represented by the following formula (I): ##STR1## wherein R is hydrogen, methyl, ethyl, propyl, butyl, phenyl, CH.sub.2 CH(OH)CH.sub.3, CH.sub.2 CH(OH)CH(OH), CH.sub.2 CH.sub.2 CH.sub.2 -phenyl, or a group of the formula (CH.sub.2).sub.x -Ar, where x is 0 to 4 and Ar is a 6-membered ring from phenyl, pyridyl, cyclohexyl, or pyranyl, each of which may be substituted with a hydrophilic group(s), andX can be Cl, tartrate, oxalate, or quinate.

Abstract: A fuel injection device for fuel-injected internal combustion engines, in particular to a unit fuel injector, in which the control of the onset and end of supply is effected by means of a magnet valve incorporated between a low-pressure circuit and a work chamber of a pump piston; a scavenging bore, connectable to the work chamber, of a scavenging line that communicates with a low-pressure chamber or the tank is provided. A delivery line for delivering the fuel from the magnet valve to the work chamber of the pump piston discharges directly into the pump work chamber and communicates with it in a permanently open fashion.

Abstract: A fuel injection pump which has a pump piston disposed in a pump housing and guided in the pump housing. A drive tappet connected to the pump piston is movable by means of a mechanical drive element in a longitudinal direction of the pump cylinder counter to the force of a restoring spring. A guide sleeve surrounds a tappet insert and is guided in a reciprocating direction of the pump piston in a guide tube disposed on the pump housing and surrounded by the restoring spring. The guide sleeve includes a loss prevention device for the drive tappet and pump piston. The guide sleeve has an inwardly oriented collar with a bearing surface upon which a U-shaped disk rests and the disk presses against an outer collar provided on the pump piston. This disk keeps the pump piston in contact with the tappet insert of the drive tappet. A lateral opening is provided in the wall of the guide sleeve, above the bearing surface of the U-shaped disk, through which the U-shaped disk can be introduced.

Abstract: A fuel injection device having a fuel pump and an injection line connected to a pump work chamber and communicating with an injection nozzle via an interposed closing valve which closes toward the pump work chamber. Via the injection end of a magnetic control valve connected to the pump work chamber fuel can be supplied under pressure to the side of the closing valve remote from the pump work chamber and in which again via this closing valve, a connection to a return line can be opened. The actuating element of the closing valve closes toward the pump work chamber and is embodied as a differential piston including a first face which under pressure is urged in a closing direction and is larger than the effective fluid pressure surface area of a second face which urges the valve closing element in the opening direction.

Abstract: A fuel injection apparatus which the termination of the effective pump supply stroke is effected by exposing a relief conduit with the aid of a valve having for instance a control edge, whereupon a highly pressurized fuel flows out via the relief conduit and is directed into a pressure chamber defined by a rear face of a pressure valve closing member. The pressure valve closing member is located in a connection with a fuel injection line that leads from the pump work chamber to the fuel injection valve and is acted upon by a valve spring to effect closing of this injection line. The impact of fuel that reaches the pressure chamber via the releif conduit reinforces a fast closure of the pressure valve closing member at the end of injection, which leads to an abrupt termination of an injection cycle. In addition, or altenatively, the fuel injection valve closing member can also be acted upon by the impact of fuel diversion.

Abstract: The unit fuel injector has a pump piston driven at a constant stroke length, which pumps fuel at injection pressure to an injection nozzle as long as an electrically actuated overflow valve blocks the flow of the fuel flowing from the pump work chamber to a low-pressure chamber via an overflow conduit. The overflow valve is inserted between a first section which communicates continuously with the pump work chamber and a second section leading to the low-pressure chamber of the overflow conduit and is secured to a housing part laterally projecting from the pump housing. The first section of the overflow conduit comprises a connecting bore leading away from the pump work chamber, a control conduit controlled by the overflow valve, and a transverse conduit connecting these two.

Abstract: A pump/nozzle unit having a piston injection pump and an injection nozzle which includes a pump piston that is driven via a drive tappet and is rotatable via a regulating sleeve. The regulating sleeve is inserted into a recess on the end face of the pump housing and is axially secured in its installed state by means of a guide bushing. The guide bushing comprises a guide part for the drive tappet and a flange radially protruding beyond the outer diameter of the tappet spring, the flange being secured on the pump housing by a holder mechanism. The forces exerted upon the pump/nozzle unit during operation are absorbed by a securing arrangement.

Abstract: The injection pump includes a pump cylinder, a pump piston moving into it and a hydraulic device for adjusting the instant of injection. The adjusting device has an adjusting cylinder, which is directed parallel to the pump cylinder and is accommodated in the housing of the injection pump, and adjusting piston and a restoring spring and adjusts a control sleeve, which opens the pump piston provided with at least one control recess in the longitudinal direction of the pump piston. This orientation and disposition of the adjusting cylinder effects a space-saving and inexpensive design of the injection pump and improves the precision of adjustment. The adjusting piston and the control sleeve may be directed coaxially and embodied as a single component, as a result of which a further space saving and increase in adjustment precision are attained.

Abstract: A pump/nozzle unit having an injection nozzle installed at at least approximately right angles to the longitudinal axis (A) on the pump housing of the piston injeciton pump. The injection pump is supported with a support face, which embodies its most extreme axial extension, on a support bearing located on the cylinder head of the engine. The support face is embodied by an outwardly pointing end face of a counterpart piston which is inserted into the pump cylinder in an extension of the longitudinal axis (A) and, with an inner end face, seals off the pump work chamber in a pressure-tight manner. As a result, the pumping forces resulting from the fuel which is placed under pressure in the pump work chamber are kept from affecting the pump housing and intercepted at a location on the cylinder head which is remote from a receiving bore for the injection nozzle.

Abstract: The pump/nozzle unit for a fuel injection system is disclosed which has a pump piston that is driven via a drive tappet and is rotatable by means of a regulating sleeve. The regulating sleeve, provided with a radially protruding control lever arm, is axially secured in its installed position by means of a guide bushing. The guide bushing includes a guide part for the drive tappet and a radially protruding flange, which is secured to the pump housing by at least one holder passing through an oblong slot on the flange of the guide bushing. A recess in the form of a circular segmented ring is cut out of the guide bushing for the passage therethrough of the control lever arm. By rotating the guide bushing within a range limited by the oblong slot a lateral limiting edge of the recess is adjustable into a position in which the pump piston, with the control lever arm resting on the limiting edge assumes a rotational position associated with a fixed supply quantity.

Abstract: The fuel injection pump of this invention proposes at least one cylinder, a piston, a drive rod, a guide sleeve for the drive means, a guide conduit embracing the guide sleeve, a restoring spring for the drive rod and piston, said piston being designed to execute a suction stroke under the influence of the restoring spring. The injection pump also comprises a locking mechanism comprising a bearing which extends into two recesses. The one recess is in the form of an annular groove located in the guide conduit. The other recess is a slot formed in the guide sleeve in its longitudinal direction. The locking mechanism prevents the guide sleeve together with the rod and piston from falling out after the injection pump has been assembled. The locking mechanism is inexpensive and easy to assemble because it requires only a single bearing in addition to already existing components of the injection pump.

Abstract: The new 2-phenoxyacetamido-5-nitro-thiazole represented by the formula: ##SPC1##In which one of the symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represents a halogen, preferably chlorine, bromine or fluorine, or a lower alkyl radical containing preferably 1 to 3 carbon atoms, or a trifluoromethyl radical, the remaining symbols representing hydrogen are interesting parasiticides, bacteriostatic agents and fungistatic agents.

Abstract: The new derivatives of 2-benzamido-5-nitro-thiazole represented by the formula: ##SPC1##In which at least one of the symbols R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 represents an acyloxy group, preferably an acetoxy or propionoxy group, whereas the remaining symbols represent hydrogen or one of said remaining symbols represents an alkoxy group, such as the methoxy group, or a halogen atom, such as a chlorine or bromine atom, are interesting parasiticides, fungistatic and molluscicidal agents.