Valveless Precombustion Chamber Patents (Class 123/268)
  • Patent number: 11174778
    Abstract: A precombustion chamber gas engine includes a main-chamber forming portion forming a main combustion chamber, a precombustion-chamber forming portion forming a precombustion chamber communicating with the main combustion chamber via nozzle holes, and an ignition device disposed in the precombustion chamber and having an ignition portion spaced from the main chamber central axis at a predetermined distance. In a plan view, the precombustion chamber has a near-ignition region including the ignition portion and a far-ignition region opposite to the near-ignition region separated by a borderline passing through the precombustion chamber central axis and perpendicular to a straight line passing through the precombustion chamber central axis and the ignition portion. The cross-sectional area of a specific near nozzle hole which is at least one nozzle hole in the near-ignition region is smaller than the cross-sectional area of a specific far nozzle hole which is at least one nozzle hole in the far-ignition region.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: November 16, 2021
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Kazutoshi Nomura, Shunya Sasaki, Daisuke Takemoto, Satoshi Yamada, Akihiro Yuuki
  • Patent number: 10954905
    Abstract: A reciprocating piston-type internal combustion engine includes a cylinder head that has an inlet valve that can be supplied with combustion air from a cylinder inlet line connected to the inlet valve, comprising a pressure accumulator, out of which an additional medium that promotes the combustion in the cylinder can be supplied to the cylinder in a controlled manner, and an injection nozzle, via which fuel can be injected into the cylinder. The additional medium is a combustion air/fuel mixture according to the invention. The pressure accumulator is connected to the injection nozzle which has a nozzle needle, and the additional medium can be introduced into the cylinder in a controlled manner by means of the injection nozzle.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: March 23, 2021
    Assignee: ERWIN JUNKER GRINDING TECHNOLOGY A.S.
    Inventor: Erwin Junker
  • Patent number: 10458312
    Abstract: A system for controlling enriched prechamber stoichiometry includes a prechamber ignition device, and an ignition control system that includes a sensor structured to measure an amount of at least one of CO2 or O2 in a prechamber, an engine timing sensor, a fuel quality sensor, and an electronic control unit. The electronic control unit is structured to receive signals from each of the sensors and determine an air-fuel ratio of the prechamber for comparison with a target air-fuel ratio, and produce a fuel delivery signal based on the comparison.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: October 29, 2019
    Assignee: Caterpillar Inc.
    Inventors: Paul Wang, David Ginter, Jaswinder Singh, Arnold Kim
  • Patent number: 10378428
    Abstract: An internal combustion engine includes: a main combustion chamber; an intake port connected to the main combustion chamber at an intake opening; an exhaust port connected to the main combustion chamber at an exhaust opening; a sub-chamber provided between the intake opening and the exhaust opening, and connected to the main combustion chamber through a plurality of through-holes; a fuel injector injecting fuel into the sub-chamber; and a spark plug performing ignition in the sub-chamber. A tumble flow flows from a first side to a second side as seen from the sub-chamber. The through-holes include: a first through-hole formed in a first side part of a side wall of the sub-chamber; and a second through-hole different from the first through-hole. A diameter of the first through-hole is larger than that of the second through-hole.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: August 13, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomoyuki Muto
  • Patent number: 10316733
    Abstract: A precombustion-chamber engine includes a cylinder, a cylinder head disposed on a top of the cylinder, and a piston reciprocably disposed within the cylinder. A main combustion chamber is defined between the piston and the cylinder head. The cylinder head includes a precombustion-chamber forming part which defines a precombustion chamber communicating with the main combustion chamber through a nozzle. The precombustion chamber includes a cylindrical first passage part extending upwardly from the nozzle, a second passage part extending upwardly from the first passage part and having an upwardly-increasing cross-sectional area, and a cylindrical space part which extends upwardly from the second passage part and in which a spark plug is disposed. Center O of a cross-section, orthogonal to straight line L, of the second passage part is eccentric with respect to straight line L composed of an axis of the first passage part and an extended line of the axis.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: June 11, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Daisuke Takemoto, Akihiro Yuuki, Shunya Sasaki, Kazuo Ogura, Yuta Furukawa
  • Patent number: 10060325
    Abstract: There is provided a cylinder head cooling apparatus of an engine capable of enhancing cooling efficiency around an auxiliary combustion chamber wall. The cylinder head cooling apparatus of an engine including a cylinder head having therein an intake port, an exhaust port, an auxiliary combustion chamber, and a cooling water jacket, in which an intake port wall, an exhaust port wall, and an auxiliary combustion chamber wall are placed in the cooling water jacket, the cooling water jacket includes a cooling water inlet and a cooling water outlet, engine cooling water flowed from the cooling water inlet into the cooling water jacket flows out from the cooling water outlet through the cooling water jacket, wherein a cooling water guide wall is provided upstream of the auxiliary combustion chamber wall in a cooling water passing path of the cooling water jacket, and the upstream cooling water guide wall is formed into a shape whose width gradually widens toward a downstream side.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: August 28, 2018
    Assignee: KUBOTA Corporation
    Inventors: Kentaro Nagai, Hiroshi Kuwasaki, Tadashi Nakano, Takahito Hamasaki, Yoshinori Tanaka, Masaya Mori
  • Patent number: 9915190
    Abstract: A ducted combustion system is disclosed. The ducted combustion system may include a combustion chamber, which is defined as an enclosure bound at a first end by a flame deck surface of a cylinder head of an internal combustion engine and bound at a second end by a piston top surface of a piston disposed within the internal combustion engine. The system may further include a fuel injector, having at least one orifice, injecting fuel into the combustion chamber as at least one fuel jet. The system may further include at least one Venturi duct disposed within the combustion chamber between the flame deck surface and the piston top surface, the at least one Venturi duct being disposed such that each of the at least one fuel jet, at least partially, enters the at least one Venturi duct structure upon being injected into the combustion chamber.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: March 13, 2018
    Assignee: Caterpillar, Inc.
    Inventor: Chad Koci
  • Patent number: 9677459
    Abstract: An engine is provided. In one embodiment, the engine includes a precombustion chamber having a body, a secondary combustion chamber disposed at least partially in the body, and a plurality of passages configured to place the precombustion chamber in fluid communication with a main combustion chamber.
    Type: Grant
    Filed: August 24, 2013
    Date of Patent: June 13, 2017
    Assignee: GE Oil & Gas Compression Systems, LLC
    Inventors: Gene McClendon, Randall A. Coleman
  • Patent number: 9243530
    Abstract: An object of the invention is to provide a fuel injection technique suitable for a spark-ignition internal combustion engine equipped with a first fuel injection valve for injecting fuel into a cylinder, a second fuel injection valve for injecting fuel into an intake passage, and a particulate filter provided in an exhaust passage thereof. To achieve the object, the fuel injection system of an internal combustion engine according to the invention reduces an in-cylinder injection ratio, which is the ratio of the quantity of fuel injected through the first fuel injection valve to the quantity of fuel injected through the second fuel injection valve, when the quantity of particulate matter trapped in the particulate filter is larger than a threshold value, thereby reducing the quantity of particulate matter discharged from the internal combustion engine.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: January 26, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yasuyuki Irisawa
  • Patent number: 9181851
    Abstract: An engine system is disclosed. The engine system may have an engine block at least partially defining a cylinder bore, and a cylinder liner disposed within the cylinder bore. The engine system may also include a fuel injector configured to pass radially through the cylinder bore and threadingly engage the cylinder liner.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: November 10, 2015
    Assignee: Electro-Motive Diesel, Inc.
    Inventors: Deep Bandyopadhyay, Michael B. Goetzke
  • Patent number: 8844491
    Abstract: A laser spark plug, e.g., for an internal combustion engine of a motor vehicle or a heavy-duty gas engine, has an antechamber for receiving an ignitable medium and a combustion chamber window which separates the antechamber from a part of the laser spark plug facing away from the combustion chamber. At least one flow-guiding element is provided in the antechamber and is situated in such a way that it deflects a fluid flow, which occurs in the antechamber and moves toward the combustion chamber window, into a radially inner direction.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: September 30, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Martin Weinrotter, Igor Orlandini, Werner Herden, Pascal Woerner, Juergen Raimann
  • Patent number: 8726878
    Abstract: An internal combustion engine includes a cylinder head having a cylinder head base, a cylinder wall, and a piston which is movable along a cylinder axis and has a piston crown. A main combustion chamber is formed between the cylinder head base, the cylinder wall, and the piston crown. A precombustion chamber is inserted into a bore of the cylinder head and is fixed relative to the bore in the circumferential direction of the bore. The axis of the bore is at least substantially parallel to the cylinder axis, and a precombustion-type combustion chamber is formed in the precombustion chamber. At least one ring of transfer openings connects the precombustion-type combustion chamber to the main combustion chamber, and in each case, the angle which the transfer opening encloses with the cylinder axis differs for at least two transfer openings of the at least one ring.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: May 20, 2014
    Assignee: GE Jenbacher GmbH & Co OG
    Inventor: Martin Klinkner
  • Patent number: 8109362
    Abstract: A passive noise attenuation device and system is provided having a reticulated open-cell porous structure configured to acts as a passive control device in order to mitigate combustion noise and instability problems in combustion systems. A porous inert media structure is placed downstream of the reaction zone of a combustion chamber to dissipate noise and/or instability generated upstream in the flame. The porous inert media also limits and/or disintegrates vortical structures in the flame to produce a homogeneous flow field to facilitate distributed reaction zones.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: February 7, 2012
    Assignee: The Board of Trustees of The University of Alabama
    Inventors: Ajay K. Agrawal, Sadasivuni Vijaykant
  • Publication number: 20090183710
    Abstract: The Process Chamber Motor PKM is a combustion piston engine comprising a Process Chamber as a novel type of prechamber, into which fluid fuel continually flows and is processed therein over a plurality of cycles to form a PKM-combustible-material. Above the Compression Chamber—separated by an impermeable Separating Wall—lies a Process Chamber PK, into which fuel is pushed over a long period (gear pump), therein vaporizing and therein being processed with added oxygen-overstoichiometric gas to form combustible material: gas, possibly with smoke and soot. The PK contains combustible material for at least two cycles, sustained at a pressure near the maximum attained above the piston and sustained at Process-temperature (e.g. 800° C.). The portion of combustible material to be combusted in the respective cycle streams—via a valve (e.g. pneumatically-actuated Cylinder-Valve) which is opened in the culmination zone—into the Combustion Chamber.
    Type: Application
    Filed: July 20, 2006
    Publication date: July 23, 2009
    Applicant: Alfons Lemm
    Inventor: Bernard Philberth
  • Patent number: 7370626
    Abstract: The invention relates to a spark-ignition engine with a highly structural compression ratio greater than 15:1, throttle regulation, externally supplied ignition and with direct fuel injection into a precombustion chamber, which is connected to the main combustion chamber via an overflow channel. The fuel is injected into the precombustion chamber during the compression stroke and is ignited by a spark plug located in a manner that is as central as possible. The invention relates to a spark-ignition engine with a highly structural compression ratio greater than 15:1, throttle regulation, externally supplied ignition and with direct fuel injection into a precombustion chamber, which is connected to the main combustion chamber via an overflow channel. The fuel is injected into the precombustion chamber during the compression stroke and is ignited by a spark plug located in a manner that is as central as possible.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: May 13, 2008
    Inventor: Gottfried Schubert
  • Patent number: 7104246
    Abstract: A multi-part module including a flame cone and a connector adapted to be interposed between the normal spark plug port in an internal combustion engine block and a spark plug suitable for use with the engine in question. In the method, a quantity of fuel/air mixture is captured in a chamber which also houses the electrode of a spark plug. Upon generation of a spark from the spark plug, this quantity of fuel/air mixture ignites, generating a flame which propagates through one or more channels in a flame cone interposed between the spark plug and the cylinder of the engine and exits into the cylinder through multiple directionally oriented ports, whereupon the flame fronts rapidly ignite substantially all the fuel/air mixture held within the cylinder.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: September 12, 2006
    Assignee: Smart Plug, Inc.
    Inventors: Howard Gagliano, Marion M. Satterfield
  • Patent number: 7100567
    Abstract: A method of operating an internal combustion engine is provided. The engine includes a main combustion chamber in fluid communication with a prechamber. The method comprises the step of varying the volume within the prechamber during a portion of a compression stroke of the main combustion chamber.
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: September 5, 2006
    Assignee: Caterpillar Inc.
    Inventors: Brett Bailey, Scott Fiveland, Weidong Gong
  • Patent number: 7066137
    Abstract: A flame ejector device for mounting in the spark plug aperture of an internal combustion engine whereby an inner end of the device is within the combustion chamber, the device being configured to receive a fuel-air mixture charge on the compression stroke of the piston and wherein the charge is ignited by a conventional spark plug mounted on the device, a unique arrangement and orientation of flame ejector nozzles on the inner end of the device for ejecting flame fronts toward predetermined areas within the combustion chamber to maximize fuel burning, to avoid engine knocking, and to prevent direct impingement of flame on metal portions contiguous the chamber which are susceptible to burning or heat damage.
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: June 27, 2006
    Inventor: Ralph E. Dawson
  • Patent number: 6662763
    Abstract: A reversible heat, constant pressure 2-cycle engine that takes ambient air and heats it up before mixing it with fuel, so that even a very lean mixture of air and fuel is highly combustible, to provide increased fuel economy and decreased fuel consumption when compared to conventional 4-stroke engines. Once a power stroke occurs with the very lean mixture, exhausted hot gases are directed to a turbine wheel. After work is taken from the hot gases and they are no longer combustible, they are returned to the atmosphere at ambient temperature. Also, the two-cycle present invention engine has a power stroke every revolution, instead of every other revolution as in conventional 4-stroke engines, which allows the present invention to be smaller in size while producing twice the power of conventional 4-stroke engines. No valve springs, camshafts, high-pressure fuel pumps, radiators, distributors, or mufflers are required with the present invention engine.
    Type: Grant
    Filed: April 2, 2002
    Date of Patent: December 16, 2003
    Inventor: Samuel Barran Tafoya
  • Patent number: 6443118
    Abstract: A portable, combustion-engined tool including a combustion chamber (1) in which a fuel gas in combusted upon ignition for building up pressure in the combustion chamber for driving the tool piston (8), an ignition device (20) for igniting the fuel gas in the combustion chamber (1), and gas drain means (43) provided in the combustion chamber (1) for controlling a pressure build-up therein.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: September 3, 2002
    Assignee: Hilti Aktiengesellschaft
    Inventors: Joachim Thieleke, Kaveh Towfighi, Iwan Wolf
  • Patent number: 6161516
    Abstract: Process for ensuring the mixing of a predetermined quantity of liquid or gaseous fuel with the air that is contained in a pre-chamber with one end that is open toward cylinders of an alternative internal-combustion engine, as well as the ignition of the mixture with the fuel being injected axially from closed end of the pre-chamber by an injector that is actuated by a predefined surplus of pressure compared to that which is present in the pre-chamber itself, the injection is a accomplished during the terminal phase of the compression half-cycle, whereby the injector and surplus are such as to ensure the fuel jet which is injected is completely evaporated and/or mixed with the air that is contained in the pre-chamber at the moment when it reaches the open end of the pre-chamber and which, during its translation motion, mixes with the above-mentioned air according to mixture richness values that can be represented by a predetermined curve that rises from injection point (A) towards center (C) of the open-end of
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: December 19, 2000
    Inventor: Pier Andrea Rigazzi
  • Patent number: 6125813
    Abstract: A fuel injection, ignition, and combustion system for use in a rotary internal combustion engine of the diesel type and method of power extraction is provided. The fuel combustion system includes a rotary engine with a prechamber disposed in a top center position of the engine housing. The prechamber includes means within the prechamber for maintaining a surface in the prechamber at a temperature sufficient to cause ignition of the fuel. In operation, unthrottled air is introduced into the housing and compressed in the top center position of the engine housing. Fuel is introduced into the prechamber via a fuel injector disposed within the prechamber which ignites due to the hot surface and initiates combustion. The engine continues to operate by retaining the surface of the prechamber at a high temperature which initiates subsequent combustion cycles.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: October 3, 2000
    Assignee: Patrick Power Products, Inc.
    Inventors: Leonard J. Louthan, Michael J. Griffith
  • Patent number: 6119650
    Abstract: An energy conservation cycle engine which protects environmental pollution by reducing NOx gases, unburned materials and increases the specific output power per weight by reducing friction-loss and vibration, by reducing the wall thickness of the main combustion chamber, and by raising the maximum combustion pressure thereby reducing CO.sub.2 in the exhaust gas. A piston has a cup-like recess at its top and a small diameter piston protrudes therefrom. A cylinder head conforms with the shape of the piston to accept the protruded portion so as to form two combustion chambers, a main chamber and a sub-chamber, and the lower end of the sub-chamber is tapered to accelerate the movement of the combustion gas between the two chambers.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: September 19, 2000
    Inventors: Hiroyasu Tanigawa, Kazunaga Tanigawa
  • Patent number: 5934244
    Abstract: A combustion prechamber is formed by at least two components. An upper component for accommodating an injection device, for example, and a lower component for sealing the prechamber off from the main combustion chamber. To configure such a combustion pre-chamber such that, without impairing the combustion process and the service life, instead of being welded, the connecting seam between the upper component and the lower component is notch-free and, at the same time, has a high strength, and is produced by a brazing process.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: August 10, 1999
    Assignee: Man B&W Diesel Aktiengesellschaft
    Inventors: Manfred Walenta, Kai Rieck
  • Patent number: 5237972
    Abstract: A two-stroke cycle spark ignition engine having cylinder fuel injection is provided with a combustion chamber featuring a delta shaped bowl or cavity that is configured and positioned in the cylinder head to improve scavenging of the combustion chamber near the injector while maintaining adequate squish flow for improved charge mixing and combustion.
    Type: Grant
    Filed: November 27, 1992
    Date of Patent: August 24, 1993
    Assignee: General Motors Corporation
    Inventors: Edward G. Groff, Keith Meintjes, Ramachandra Diwakar
  • Patent number: 5222993
    Abstract: A water-cooled, spark-ignited, natural gas burning engine that includes an improved ignition system having a pair of precombustion chambers located in series connected by an orifice from the first chamber into the combustion chamber of the engine whereby a relatively rich fuel/air mixture, ignited in the second prechamber, propagates a flame through an orifice into the first chamber wherein a leaner fuel/air mixture from the combustion chamber is plasma ignited which in turn creates a larger flame that is projected through an orifice into the main combustion chamber for plasma igniting a lean fuel/air mixture which could not otherwise be ignited by spark ignition. The invention also contemplates a kit providing the above for use in converting water-cooled, diesel burning, compression ignited engines into water-cooled, natural gas burning, spark-ignited engines.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: June 29, 1993
    Assignee: Gas Research Institute
    Inventor: Michael E. Crane
  • Patent number: 5111786
    Abstract: An internal combustion engine having an air cell combustion system includes a cylinder block having at least one bore with a piston reciprocably housed therein, and a cylinder head attached to a cylinder block, with the cylinder block, piston and cylinder head defining a combustion chamber. A reservoir for air compressed by the piston is delimited by a counterbore in the deck surface of the cylinder block and by an annular space formed in the cylinder head. A number of passages extend tangentially from the reservoir into the combustion chamber.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: May 12, 1992
    Assignee: Ford Motor Company
    Inventors: Dominic Fontichiaro, Daniel M. Kabat
  • Patent number: 4926818
    Abstract: A method and device for generating pulsed jets which will form plumes comprising eddie structures, which will entrain a fuel/air mixture from the head space of an internal combustion engine, and mixing this fuel/air mixture with a pre-ignited fuel/air mixture of the plumes thereby causing combustion of the reactants to occur within the interior of the eddie structures.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: May 22, 1990
    Assignee: The Regents of the University of California
    Inventors: A. K. Oppenheim, H. E. Stewart, K. Hom
  • Patent number: 4696269
    Abstract: A flame ignitor for internal combustion engines. This flame ignitor is, in one embodiment, an insert unit to be received in, for example, a conventional spark plug hole of an engine. It is to project into the combustion chamber of the engine a sufficient distance, and at a selected orientation, such that an opening will collect a portion of fuel-rich fuel-air mixture from within the combustion chamber and direct the same toward a spark gap of a spark producing device located in the opposite end of the unit. The device has an elongated secondary chamber proximate the combustion chamber and a primary chamber proximate the spark gap. The opening into the secondary chamber also provides an outlet from the secondary chamber to direct ignited fuel into the engine combustion chamber above the piston head at a high rate of speed to ignite any fuel-air mixture therein prior to the initiation of combustion knock.
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: September 29, 1987
    Assignee: Oak Ridge Systems, Inc.
    Inventor: Donald Blackburn
  • Patent number: 4646695
    Abstract: A flame ignitor for internal combustion engines. This flame ignitor is, in one embodiment, an insert unit to be received in, for example, a conventional spark plug hole of an engine. It is to project into the combustion chamber of the engine a sufficient distance, and at a selected orientation, such that a bell-shaped opening will collect a portion of fuel-rich fuel-air mixture from within the combustion chamber and direct the same toward a spark gap of a spark producing device located in the opposite end of the unit. The device has an elongated secondary chamber proximate the combustion chamber and a primary chamber proximate the spark gap. The bell-shaped opening into the secondary chamber is preferably oriented to give a spiral movement to incoming fuel mixtures.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: March 3, 1987
    Assignee: Oak Ridge Systems, Inc.
    Inventor: Donald Blackburn
  • Patent number: 4596214
    Abstract: A combustion chamber system of a kerosine internal combustion engine including a main combustion chamber and an auxiliary combustion chamber both of which are defined in a cylinder head and are spaced from each other by a partition. A plurality of communication holes through which these main and auxiliary combustion chambers communicate with each other are made in the partition. The main combustion chamber has a suction port and an exhaust port opened thereto which are adapted to be opened and closed by a suction valve and an exhaust valve, respectively. The open ends of the communication holes on the side of the main combustion chamber are pointed to the upper surface of a piston located in the vicinity of a top dead center thereof, and a mixture of a theoretical or richer fuel ratio is fed into the main combustion chamber.
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: June 24, 1986
    Assignee: Honda Giken Kabushiki Kaisha
    Inventors: Shizuo Yagi, Junji Ootani, Masafumi Araki, Fumihiko Yoshida
  • Patent number: 4465033
    Abstract: An energy conversion cycle for an internal combustion engine and an internal combustion engine capable of carrying out the process to produce work, the process characterized by the steps of forming fuel and air charges having fuel to air proportions varying from stoichiometric at full engine power to excess air at less than full engine power conditions; increasing by compression the density and activation of the molecules of the charges supplied to a variable volume working chamber in which fuel and oxygen in the air are reacted to produce thermal potential; controlling fuel and air distribution in the working chamber so that the excess air portion of each charge is located in an air reservoir chamber that is separated from the reaction area by an open partition area separating the working and air reservoir chambers; and through the partition area, controlling availability of oxygen in the working chamber during the reaction while permitting the oxygen to be activated in a specific manner by molecular interac
    Type: Grant
    Filed: October 25, 1978
    Date of Patent: August 14, 1984
    Inventor: Richard F. Blaser
  • Patent number: 4444166
    Abstract: A method and apparatus for combusting diesel, gasoline, kerosene, alcohol and other compression ignition fuels in either direct or indirect injection compression auto ignition internal combustion engines which enables such engines to operate at low compressions. The apparatus includes an ignition chamber which functions to receive a portion of the incoming fuel charge thereby concentrating such portion in an area separate from the auxiliary or primary combustion chambers.
    Type: Grant
    Filed: March 4, 1983
    Date of Patent: April 24, 1984
    Assignee: Kovacs Research Center, Inc.
    Inventors: Geza Kovacs, Mihaly Kovacs, Endre Kovacs, Peter Kovacs
  • Patent number: 4433647
    Abstract: In accordance with the teachings of the present invention an internal combustion engine comprising at least a combustion chamber, a piston, a turbulence chamber provided inside the overhead cylinder above the piston, and an ignition device leading to the turbulence chamber is provided. The invention is characterized in that at least one channel provided at the base of the overhead cylinder, opens tangentially along the walls of the turbulence chamber. The channel has, at its origin, a width substantially equal to the diameter of the seat of the intake valve and narrows as it goes deeper in the direction of the turbulence chamber. This engine embodies an improvement of the Otto type engines.
    Type: Grant
    Filed: August 6, 1981
    Date of Patent: February 28, 1984
    Inventor: Rudolf Muller
  • Patent number: 4416228
    Abstract: An ignition chamber unit to be arranged on a main combustion chamber of an internal combustion engine has walls forming a separate ignition chamber having a first wall which separates the ignition chamber from the main combustion chamber and has at least one passage arranged in the first wall to connect the ignition chamber with the combustion chamber, a center electrode provided in the ignition chamber and forming together with the first wall a spark gap and also having a free end which extends into the ignition chamber, wherein the electrode is hollow near the free end and is formed as a heat pipe, and an insulator with an insulator shoe which extends into the ignition chamber and supports the center electrode so that the insulator together with the insulator shoe forms an insulating gap.
    Type: Grant
    Filed: January 7, 1982
    Date of Patent: November 22, 1983
    Assignee: Robert Bosch GmbH
    Inventors: Walter Benedikt, Reinhard Latsch, Hans Schlembach