US3763649A - Hot gas rotary piston engine - Google Patents

Hot gas rotary piston engine Download PDF

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Publication number
US3763649A
US3763649A US00128665A US3763649DA US3763649A US 3763649 A US3763649 A US 3763649A US 00128665 A US00128665 A US 00128665A US 3763649D A US3763649D A US 3763649DA US 3763649 A US3763649 A US 3763649A
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United States
Prior art keywords
line means
hot gas
chamber
branch line
engine according
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Expired - Lifetime
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US00128665A
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English (en)
Inventor
J Wahnschaffe
D Gwinner
E Braun
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Daimler Benz AG
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Daimler Benz AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005—Wankel engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2730/00—Internal-combustion engines with pistons rotating or oscillating with relation to the housing
    • F02B2730/01—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber
    • F02B2730/018—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber with piston rotating around an axis passing through the gravity centre, this piston or the housing rotating at the same time around an axis parallel to the first axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2244/00—Machines having two pistons
    • F02G2244/50—Double acting piston machines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • HOT GAS ROTARY PISTON ENGINE [75 Inventors: J urgen Wahnschaffe, Cologne; Dietrich Gwinner, Waiblingen; Konstantin Pattas, Stuttgart; Eberhard Braun, Waiblingen, all of Germany [73] Assignee: Daimler-Benz Aktiengesellschaft,
  • a hot gas engine in the form of a rotary piston engine of trochoidal construction in which two rotary piston engines operate with predetermined phase displacement, of which one is constructed as hot gas section and the other one as cold gas section; each rotary piston engine includes a triangular piston rotatably supported on an eccentric shaft within an epitrochoidally shaped two-arched housing case whereby inlet and outlet openings are provided in the contact surface of the casing in front and to the rear of the minor axis; the inlet and outlet openings are arranged both in the hot gas section as also in the cold gas section mutually opposite one another and are connected with each other by way of branch lines provided with control devices and main lines that include heaters, regenerators and coolers interconnected in the main lines.
  • the present invention relates to a hot gas engine in the form of a rotary piston engine of trochoidal type of construction.
  • the present invention is concerned with the task to utilize rotary piston engines in an advantageous manner compared to the hitherto customary double-acting Stirling reciprocating piston engines operating with discontinuous movements according to the hot gas principle.
  • the solution according to the present invention utilizes two rotary piston engines operating with phase displacement of which one is constructed as hot gas portion and the other as cold gas portion, each including a triangular piston as inner envelope rotatably supported in a conventional manner on an eccentric shaft and an epitrochoidally shaped, two-arched casing housing, and which are provided at the casing running surfaces thereof with inlet and outlet openings each on both sides, respectively, in front and behind (upstream and downstream) of the minor axes as viewed in the direction of rotation of the piston, of which the respective inlet and outlet openings are arranged both in the hot gas as also in the cold gas portion mutually diagonally opposite and are connected with each other by way of branch lines provided with control devices and main lines under interposition of a heater, a regenerator and a cooler each.
  • the present invention proposes to construct thecontrol devices arranged between the main line and the lines branching off from the same as roller-type slide valves.
  • the hot gas process with multi-fuel capability and noise-free operation realized in this manner by means of two rotary piston engines offers the advantage of a complete mass compensation and a small specific weight by reason of the compact structure.
  • Another object of the present invention resides in a hot gas rotary piston engine which obviates the discontinuous movements of the prior art engines operating according to the hot gas principle.
  • a further object of the present invention resides in .a hot gas engine which not only reduces the problems of thermal'stresses but also enables a smaller weight per horsepower as well as complete mass compensation.
  • the single FIGURE is a schematic view of one embodiment of a hot gas rotary piston engine in accordance with the present invention.
  • FIG. 1a the rotary piston engine constructed as hot gas section is generally designated by reference numeral 1a, and
  • the rotary piston engine operating as cold gas section is generally designated by reference numeral 1b.
  • the rotary piston engine 1a consists of a stationary, epitrochoidally shaped two-arched casing housing 2 and of a triangular piston 4 provided with three sealing bars 3, which is rotatably supported on an eccentric of an eccentric shaft (not shown) and rotates in the same direction as the eccentric shaft which in a conventional manner for such engines carries out three rotations during each rotation of the piston. Since the details of such rotary piston engines are known as such, a detailed showing and description thereof is dispensed with herein.
  • the casing housing 2 provided with a casing running or contact surface 5 is provided on each side of the minor axis 6 with two mutually diagonally opposite inlet openings 70, 7b and outlet openings 8a, 8b, whereby the inlet openings and 7b are arranged shortly behind (downstream of) the minor axis 6 as viewed in the direction of rotation of the piston 4, indicated by the arrow, and the outlet openings 8a, 8b are disposed shortly in front (upstream) of the minor axis 6.
  • the openings arranged pair-wise on both sides of the casing housing 2 of the rotary piston engine la constructed as hot gas section are connected with the openings arranged pair-wise in an analogous manner in the cold gas section of the rotary piston engine lb, which are designated as inlet openings by reference numerals 9a, 9b and outlet openings by reference numerals 10a, 10b, by way of branch lines and 13b, 14a and 14b, 15a and 15b and 16a and 16b terminating in the main lines 1 l and 12.
  • the ends of the main lines 11, 12 are provided each with a control device 17 constructed as rotary slide valve which controls the gas flow, flowing with a periodical change of the flow direction, through the lines branching off from the main lines ll, 12.
  • Both main lines ll, 12 are provided, respectively, with a heater 18a, 18b, a regenerator 19a, 19b and a cooler 20a, 20b, all of any conventional construction.
  • the pistons 4 of the rotary piston engines la and lb are arranged displaced with respect to each other by 90 whereby the hot gas piston leads the cold gas piston by 270 eccentric shaft angle.
  • the rotary slide valves 17 for the control of the gas flow rotate at the eccentric shaft rotational speed so that during one eccentric shaft rotation the chambers designated by reference numeral 21 or the chambers designated by reference numeral 22 are alternately connected with the line system during 180 eccentric shaft angle.
  • the rotary piston engines provided with circumferential control in the surfaces 5, as shown in the drawing, may be replaced for reasons of a considerably more compact construction possibly by rotary piston internal combustion engines, whose inlet and outlet openings are not arranged in the running surfaces 5 of the casings but at the lateral wall parts (not shown) of the engme.
  • a hot gas engine comprising first and second troichoidal chambers, said first chamber being constructed as a hot gas section and said second chamber being constructedas a cold gas section, a polygonal piston rotatably mounted in each chamber, two inlet ports and two outlet ports in each of said chambers, said inlet ports being arranged diagonally opposite one another at first and second sides of each of said chambers, said outlet ports being arranged diagonally opposite one another at said first and second sides of each of said chambers, a first branch line means communicating directly with the inlet port at the first side of the first chamber, a second branch line means communicating directly with the outlet port at the first side of the first chamber, a third branch line means communicating directly with the inlet port at the first side of the second chamber, a fourth branch line means communicating directly with the outlet port at the first side of the second chamber, first main line means, first control valve means for selectively communicating one of the first and second branch line means with one end of said first main lines means, and second control valve means for selectively communicating one of the third and fourth branch line means
  • a hot gas engine further comprising a fifth branch line means communicating directly with the inlet port at the second side of the first chamber, a sixth branch line means communicating directly with the outlet port at the second side of the first chamber, a seventh branch line means communicating directly with the inlet port at the second side of the second chamber, an eigth branch line means communicating directly with the outlet port at the second side of 4.
  • a hot gas engine further comprising regenerator means and cooler means in each of said first and second main line means, wherein said heater means, regenerator means and cooler means are arranged in series relationship to one another in the main line means.
  • a hot gas engine according to claim 1, wherein said first and second control valve means are constructed as rotary slide valves.
  • a hot gas engine according to claim 6, wherein saidrotary slide valves are interconnected to the engine pistons so as to rotate at a predetermined rate with respect to the rotational rate of the pistons.
  • each of said first, second, third and fourth control valve means are constructed as rotary slide valves.
  • a hot gas engine wherein said rotary slide valves are interconnected to the engine pistons so as to rotate at a predetermined rate with respect to the rotational rate of the pistons.
  • a hot gas engine according to claim 1, wherein communication of respective first and second branch line means with respective third and fourth branch line means is only by way of said first main line means.
  • a hot gas engine wherein communication of respective branch line means at one chamber with respective branch line means at the other chamber is only by way of said first and second main line means such that flow takes place in one direction in the respective main line means during part of the engine: operating cycle and in the opposite direction during another part of the engine operating cycle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
US00128665A 1970-04-04 1971-03-29 Hot gas rotary piston engine Expired - Lifetime US3763649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702016218 DE2016218A1 (de) 1970-04-04 1970-04-04 Heißgas-Rotationskolbenmaschine

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US3763649A true US3763649A (en) 1973-10-09

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US00128665A Expired - Lifetime US3763649A (en) 1970-04-04 1971-03-29 Hot gas rotary piston engine

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US (1) US3763649A (enrdf_load_stackoverflow)
DE (1) DE2016218A1 (enrdf_load_stackoverflow)
GB (1) GB1295203A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990239A (en) * 1974-01-24 1976-11-09 Daimler-Benz Aktiengesellschaft Hot gas piston engine
US4103491A (en) * 1976-04-28 1978-08-01 Yoshihiro Ishizaki Stirling cycle machine
US4138847A (en) * 1977-07-11 1979-02-13 Hill Craig C Heat recuperative engine
US4179890A (en) * 1978-04-04 1979-12-25 Goodwin Hanson Epitrochoidal Stirling type engine
US4228654A (en) * 1978-12-07 1980-10-21 Hill Craig C Heat recuperative engine with improved recuperator
WO1999056013A1 (en) * 1998-04-25 1999-11-04 Ceres Ipr Limited Improvements relating to rotary piston machines
US6109040A (en) * 1999-04-12 2000-08-29 General Pneumatics Corporation Stirling cycle refrigerator or engine employing the rotary wankel mechanism
US20060064976A1 (en) * 2004-09-24 2006-03-30 Masami Sakita External combustion engine
US20080098751A1 (en) * 2006-10-27 2008-05-01 Fusao Terada Stirling system and freezer system using the same
US20090120406A1 (en) * 2006-02-16 2009-05-14 Stephen Francis Lindsey Rotary piston and cylinder devices
US20110259002A1 (en) * 2010-04-27 2011-10-27 Hanson Goodwin F Stirling cycle epitrochoidal heat engine
US20120315172A1 (en) * 2009-10-08 2012-12-13 Mark David Horn Supplemental compounding control valve for rotary engine
US8978618B2 (en) 2011-05-13 2015-03-17 Brian Davis Heat engine
US10208599B2 (en) 2011-05-13 2019-02-19 Brian Davis Heat engine with linear actuators

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616248A (en) * 1949-01-27 1952-11-04 Hartford Nat Bank & Trust Co Hot-gas reciprocating engine
US3400281A (en) * 1964-11-27 1968-09-03 Gen Motors Corp Stirling cycle drive for an electrokinetic transducer
US3426525A (en) * 1967-08-10 1969-02-11 Gotthard G Rubin Rotary piston external combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616248A (en) * 1949-01-27 1952-11-04 Hartford Nat Bank & Trust Co Hot-gas reciprocating engine
US3400281A (en) * 1964-11-27 1968-09-03 Gen Motors Corp Stirling cycle drive for an electrokinetic transducer
US3426525A (en) * 1967-08-10 1969-02-11 Gotthard G Rubin Rotary piston external combustion engine

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990239A (en) * 1974-01-24 1976-11-09 Daimler-Benz Aktiengesellschaft Hot gas piston engine
US4103491A (en) * 1976-04-28 1978-08-01 Yoshihiro Ishizaki Stirling cycle machine
US4138847A (en) * 1977-07-11 1979-02-13 Hill Craig C Heat recuperative engine
US4179890A (en) * 1978-04-04 1979-12-25 Goodwin Hanson Epitrochoidal Stirling type engine
US4228654A (en) * 1978-12-07 1980-10-21 Hill Craig C Heat recuperative engine with improved recuperator
AU756743B2 (en) * 1998-04-25 2003-01-23 Ceres Ipr Limited Improvements relating to rotary piston machines
US6352063B1 (en) 1998-04-25 2002-03-05 Ceres Ipr Limited Rotary piston machines
WO1999056013A1 (en) * 1998-04-25 1999-11-04 Ceres Ipr Limited Improvements relating to rotary piston machines
US6109040A (en) * 1999-04-12 2000-08-29 General Pneumatics Corporation Stirling cycle refrigerator or engine employing the rotary wankel mechanism
US20060064976A1 (en) * 2004-09-24 2006-03-30 Masami Sakita External combustion engine
US7178324B2 (en) 2004-09-24 2007-02-20 Masami Sakita External combustion engine
US20090120406A1 (en) * 2006-02-16 2009-05-14 Stephen Francis Lindsey Rotary piston and cylinder devices
US9057268B2 (en) * 2006-02-16 2015-06-16 Lontra Limited Rotary piston and cylinder devices
US20080098751A1 (en) * 2006-10-27 2008-05-01 Fusao Terada Stirling system and freezer system using the same
US20120315172A1 (en) * 2009-10-08 2012-12-13 Mark David Horn Supplemental compounding control valve for rotary engine
US20110259002A1 (en) * 2010-04-27 2011-10-27 Hanson Goodwin F Stirling cycle epitrochoidal heat engine
US8087242B2 (en) * 2010-04-27 2012-01-03 Hanson Goodwin F Stirling cycle epitrochoidal heat engine
US8978618B2 (en) 2011-05-13 2015-03-17 Brian Davis Heat engine
US10208599B2 (en) 2011-05-13 2019-02-19 Brian Davis Heat engine with linear actuators

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Publication number Publication date
GB1295203A (enrdf_load_stackoverflow) 1972-11-08
DE2016218A1 (de) 1971-10-21

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