FR2355998A1 - Thermodynamic process for IC engine - has combustion partly at constant volume and partly during isothermal expansion - Google Patents

Thermodynamic process for IC engine - has combustion partly at constant volume and partly during isothermal expansion

Info

Publication number
FR2355998A1
FR2355998A1 FR7602294A FR7602294A FR2355998A1 FR 2355998 A1 FR2355998 A1 FR 2355998A1 FR 7602294 A FR7602294 A FR 7602294A FR 7602294 A FR7602294 A FR 7602294A FR 2355998 A1 FR2355998 A1 FR 2355998A1
Authority
FR
France
Prior art keywords
constant volume
partly
expansion
engine
during
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7602294A
Other languages
French (fr)
Other versions
FR2355998B3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of FR2355998A1 publication Critical patent/FR2355998A1/en
Application granted granted Critical
Publication of FR2355998B3 publication Critical patent/FR2355998B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F02B1/06—Methods of operating
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The engine draws air in at constant pressure (3) and then compresses it adiabatically (4). Fuel is then introduced and burnt at constant volume (5) until the peak pressure (P1) is reached. Further fuel is burnt during the expansion stroke (6) so that this stroke is isothermal. At the end of expansion heat is rejected at constant volume (7) and finally the exhaust gases are discharged at constant pressure (8). 80% to 90% of the fuel is burnt during the constant volume phase (5) and the remainer during the isothermal expansion (6). The cycle reduces the peak pressure below that of other internal combustion engine cycles whilst maintaining a high temperature during expansion and this combination reduces the production of nitrous oxide in the exhaust.
FR7602294A 1975-02-19 1976-01-28 Thermodynamic process for IC engine - has combustion partly at constant volume and partly during isothermal expansion Granted FR2355998A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752507142 DE2507142A1 (en) 1975-02-19 1975-02-19 PROCESS FOR RUNNING A CIRCULAR PROCESS IN COMBUSTION MACHINES OPERATING WITH A FUEL-AIR MIXTURE

Publications (2)

Publication Number Publication Date
FR2355998A1 true FR2355998A1 (en) 1978-01-20
FR2355998B3 FR2355998B3 (en) 1978-10-20

Family

ID=5939284

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7602294A Granted FR2355998A1 (en) 1975-02-19 1976-01-28 Thermodynamic process for IC engine - has combustion partly at constant volume and partly during isothermal expansion

Country Status (2)

Country Link
DE (1) DE2507142A1 (en)
FR (1) FR2355998A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265562A (en) * 1992-07-27 1993-11-30 Kruse Douglas C Internal combustion engine with limited temperature cycle
US6405704B2 (en) 1992-07-27 2002-06-18 Kruse Technology Partnership Internal combustion engine with limited temperature cycle
DE102005050197A1 (en) * 2005-10-18 2007-04-19 Helmut Obieglo Internal combustion engine e.g. exposed semi-energy heat engine, for use as diesel engine, has cylinder, where determined operating parameters e.g. rotation speed, displaced volume and engine output, are provided for combustion of fuel

Also Published As

Publication number Publication date
DE2507142A1 (en) 1976-09-02
FR2355998B3 (en) 1978-10-20

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Legal Events

Date Code Title Description
ST Notification of lapse