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| Number | Title | Issue Date |
| 5726351 | Spark plug comprising a force measuring element A spark plug with an insulating body held in a casing and containing an inner electrode is provided with a force-measuring element for measuring the pressure acting on the spark plug, the insulating body resting against the casing via the force-measuring ... | 03/10/1998 |
| 5690077 | Injection system for an internal combustion engine To provide an injection system for an internal combustion engine operating on self-igniting liquefied gas as a fuel, and to minimize cavitation and related problems of fuel delivery as well as wear, the fuel tank is configured as a low-pressure storage ta... | 11/25/1997 |
| 5656768 | Method for determining the moment of inertia For largely automatic determination of the moment of inertia of, in particular, an internal combustion engine on a testing stand, speed n and indicated torque MM are measured under controlled operating conditions in both a run-up phase as well ... | 08/12/1997 |
| 5557968 | Piezoelectric measuring element for measuring mechanical variables To improve temperature compensation of a piezoelectric element measuring mechanical variables, such as pressure, force, and acceleration, with two or more piezoelectric crystal elements, at least one of the crystal elements differ from the other crystal e... | 09/24/1996 |
| 5492189 | Hybrid drive system A propulsion system includes an internal combustion engine predominantly operating in a steady-state mode and a driving engine operating in a transient mode, which act on the output shaft of a planetary gear train by first and second drive shafts. To obta... | 02/20/1996 |
| 5471883 | Cooled pressure sensor A cooled pressure sensor includes a first housing part with inlet and out pipes for a cooling medium and a second housing part sealed gas-tight by means of a membrane and containing a signal generating element for force or displacement sensing. Several c... | 12/05/1995 |
| 5440188 | Piezoelectric crystal element A piezoelectric crystal element for surface acoustic wave applications with a quartz substrate with at least one substantially planar quartz surface, the planar quartz surface having an epitaxially grown layer of a quartz-isomorphous crystal with the tota... | 08/08/1995 |
| 5384467 | Optoelectronic measuring device for monitoring a combustion chamber An optoelectronic measuring device for the purpose of observing and recording combustion processes in the combustion chamber of an internal combustion engine during operation, includes optical sensors directed at the combustion chamber and connected to an... | 01/24/1995 |
| 5375556 | Hydrothermal process for growing large crystals or crystal layers In order to obtain large, high-quality crystals or crystal layers of a me orthophosphate, in particular, GaPO4 or AlPO4, from a nutrient solution with the use of a seed plate, the proposal is put forward that in the initial phase of... | 12/27/1994 |
| 5353643 | Pressure sensor To compensate for temperature effects on the measuring signal of a pressure sensor which includes a membrane part with at least indirect signal generation and is a supporting base, the membrane part being deformed by the pressure to be measured and cooper... | 10/11/1994 |
| 5351665 | Internal combustion engine A combustion chamber located in the piston of an internal combustion engine is divided by restrictions into two or more partial chambers. The ratio between the minimum distance in the restricted area and the maximum distance in concave areas of the wall o... | 10/04/1994 |
| 5150672 | Cylinder head of an internal combustion engine Cylinder head of an internal combustion engine with more than two valves in overhead arrangement for each cylinder, which are actuated via rocker arms, each rocker arm being individually supported on the cylinder head by means of a bridge. A compact desig... | 09/29/1992 |
| 5138989 | Internal combustion engine with two or more inlet valves per engine cylinder In an internal combustion engine with two or more inlet valves for each engine cylinder and roof-shaped boundary surfaces of the combustion chamber in the cylinder head--the main flow directions of the partial streams admitted into the combustion chamber ... | 08/18/1992 |
| 5131229 | Internal-combustion engine with exhaust gas turbocharger In order to utilize recycling of exhaust gases at high engine loads in an internal-combustion engine with an exhaust gas turbocharger, optionally with a charge cooler, as well as an exhaust gas recycling valve which is arranged within a connecting pipe th... | 07/21/1992 |
| 5098673 | Apparatus for growing homogeneous crystals In order to prevent crystal seeds with retrograde solubility from dissolving in the hydrothermal growing solution at the beginning of the growing process, and to protect the finished crystal at the end of the growing process, and in order to reach the the... | 03/24/1992 |
| 5044159 | Exhaust system for two-stroke cycle engines In an exhaust system for two-stroke cycle engines, comprising an exhaust pipe whose front end, which is characterised by a constant cross-section, is followed by two or more conical sections, these conical sections are configured as diffusers, which are c... | 09/03/1991 |
| 5040496 | Two-stroke internal combustion engine In known two-stroke internal combustion engines with piston-controlled intake passages for the fresh charge and one or more exhaust passages for the exhaust gases, the actual direction of flow will deviate from the theoretical flow direction defined by th... | 08/20/1991 |
| 5027645 | Measuring device for determining distance To improve the measuring sensitivity of a measuring device to determine the istance between an electrically conducting part, which can be moved in a defined chamber, and a reference point, in particular to determine the upper dead point of the piston of an... | 07/02/1991 |
| 5025769 | Device for feeding fuel into a combustion chamber of an internal combustion engine For control of the injection rate of a device for feeding fuel into the combustion chamber of an internal combustion engine, comprising an injection valve opening into the combustion chamber, which is used for taking compressed gas from the cylinder and i... | 06/25/1991 |
| 4992694 | Piezoelectric crystal element on the basis of GAPO4 In order to improve the temperature stability of piezoelectric and elastic properties of piezoelectric crystal elements based on GaPO4, preferably for resonator applications, and to facilitate alignment when the crystal elements are cut from th... | 02/12/1991 |
| 4986129 | Pressure sensor In order to prevent tilting and torsional stresses from entering the actual sensor element of a pressure sensor comprising a supporting part and an integrated sensor part, the proposal is put forward that the coresponding surfaces of a shoulder of the sup... | 01/22/1991 |
| 4962735 | Intake system for multi-cylinder internal combustion engines An intake system for multi-cylinder internal combustion engines, in particular of a V-type design, whose suction pipes extend in longitudinal direction and are connected to the intake channel leading towards the intake valve by means of passages of differ... | 10/16/1990 |
| 4953390 | Method and a device for measuring the air/fuel ratio of an internal combustion engine A method and device for delay-free measurement of the air/fuel ratio of combustion systems, especially internal combustion engines, by measuring individual components of the fuel, the ambient air used for fuel combustion, and the exhaust gas, wherein the ... | 09/04/1990 |
| 4946545 | Method of growing homogeneous crystals In order to prevent crystal seeds with retrograde solubility from dissolving in the hydrothermal growing solution at the beginning of the growing process, and to protect the finished crystal at the end of the growing process, and in order to reach the the... | 08/07/1990 |
| 4945873 | Internal combustion engine with two inlet valves per cylinder In an internal combustion engine with two or more cylinders and two inlet valves per cylinder, in which the intake passages of two adjacent cylinders, which lead towards the inlet valves, are located side by side, symmetrically relative to the symmetry pl... | 08/07/1990 |
| 4909132 | Curved supporting elements for joining piston pin bosses to piston head of internal combustion engine piston In order to achieve less deformation under gas pressure load and also under thermal load, the bottom piece of a piston with ring-carrying barrel is configured as a supporting cone tapering towards the piston pin and connected with the piston pin bosses by... | 03/20/1990 |
| 4846114 | Method concerning the delivery of fuel into the combustion chamber of a diesel engine and a device for realizing the method The delivery of fuel into the combustion chamber of a diesel engine is aided by blowing in an amount of compressed air which is small compared to the stroke volume of the diesel engine after the stream of fuel has been injected into the combustion chamber... | 07/11/1989 |
| 4836162 | Engine brake of an internal combustion engine An engine brake in an internal combustion engine for use in motor vehicles, comprising an exhaust valve controlled by a cam via a follower lever, and a device for leaving the exhaust valve slightly open during the combustion stroke. According to the inven... | 06/06/1989 |
| 4813387 | Internal combustion, reciprocating piston engine The present invention relates to an internal combustion, reciprocating pin engine with a piston which, on its up-stroke, sucks air or a fuel-air mixture via a flap valve or a similar device into the space beneath its base and, during the down-stroke, sen... | 03/21/1989 |
| 4737676 | Transducer with a flexible piezoelectric layer as a sensor element A transducer comprising a flexible piezoelectric layer as a sensor element for measuring mechanical quantities in hollow bodies, above all pressures in pipes, the opposite sides of this layer being bonded to electrically-conductive contact layers and bein... | 04/12/1988 |
| 4732119 | Internal combustion engine Two or more valves which are positioned opposite one another relative to a center plane in which the cylinder axis and the crankshaft axis are located and which are arranged in the cylinder head in a parallel, upright position, are actuated via separate c... | 03/22/1988 |
| 4711129 | Pressure sensor A pressure sensor which comprises one or more measuring elements situated in a housing and a plate membrane sealing the housing against the medium to be measured and being attached to the measuring element on order to transmit the pressure to be measured,... | 12/08/1987 |
| 4703182 | Arrangement for fluorescence-optical measurement of concentrations of substances contained in a sample An arrangement for the fluorescence-optical measurement of concentrations of substances contained in a sample includes a detector, a light source and a sensor element that includes a carrier element, the carrier element having an indicator layer on a port... | 10/27/1987 |
| 4694786 | One-cylinder, two-stroke internal combustion engine with crankcase scavenging A two-stroke internal combustion engine of the crankcase scavenging type, in which a nozzle connected to a lubricant feed line is provided in the intake passage for picking up oil from a lubricant reservoir via a partial vacuum. For simple and sufficient ... | 09/22/1987 |
| 4643022 | Device for observing the processes taking place in the combustion chamber of an internal combustion engine during operation In order to observe and optically record the processes in the combustion chamber of an internal combustion engine during operation, at least one observation bore located in the wall of the combustion chamber is provided with a transparent window as well a... | 02/17/1987 |
| 4643135 | Internal combustion engine A known feature of internal combustion engines is that the cooling-water pump has an impeller which is rigidly connected with a squirrel cage rotor and which is driven without physical contact via the rotatory field of rotating permanent magnets. If such ... | 02/17/1987 |
| 4624227 | Four-stroke internal combustion engine with a lubricating oil pump A lubricating oil pump for a four-stroke internal combustion engine inclu a pump body; an annular gearwheel rotatably mounted around the outer perihery of the pump body, the annular gearwheel including projections on its outer surface to function as cams... | 11/25/1986 |
| 4582028 | Internal combustion, reciprocating piston, liquid cooling engine Dry cylinder-liners are partly inserted into the liquid cooled lower part a common cylinder head, which is fastened to an upwardly extended crankcase by means of crankshaft main bearing studs having their threads at the level of the inserted parts of the... | 04/15/1986 |
| 4483184 | Automatic diagnostic device for a four-stroke-internal combustion engine Three impulse transmitters are provided of which one co-acts with an impu mark on the flywheel, another with an impulse mark on the camshaft drive wheel and a third with the teeth of the ring gear on the flywheel of the engine. The impulse mark on the fl... | 11/20/1984 |
| 4480487 | Device for testing the tension of a driving belt during operation A loading mechanism which may be moved relative to a free belt strand is provided with a measuring roller which is driven by the belt upon contact and furnished with pulse markers, and which, together with a pulse transducer sets to zero a device measurin... | 11/06/1984 |
