US3491732A - Piston engine with throttle valve regulation in the suction pipe - Google Patents

Piston engine with throttle valve regulation in the suction pipe Download PDF

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Publication number
US3491732A
US3491732A US697396A US3491732DA US3491732A US 3491732 A US3491732 A US 3491732A US 697396 A US697396 A US 697396A US 3491732D A US3491732D A US 3491732DA US 3491732 A US3491732 A US 3491732A
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US
United States
Prior art keywords
suction pipe
throttle valve
engine
piston
vacuum
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.)
Expired - Lifetime
Application number
US697396A
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English (en)
Inventor
Wolfram Dahm
Erhard Melcher
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz AG
Application granted granted Critical
Publication of US3491732A publication Critical patent/US3491732A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00—Idling devices for carburettors
    • F02M3/06—Increasing idling speed
    • F02M3/07—Increasing idling speed by positioning the throttle flap stop, or by changing the fuel flow cross-sectional area, by electrical, electromechanical or electropneumatic means, according to engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M23/00—Apparatus for adding secondary air to fuel-air mixture
    • F02M23/04—Apparatus for adding secondary air to fuel-air mixture with automatic control
    • F02M23/08—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus
    • F02M23/085—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus specially adapted for secondary air admission during braking or travelling down steep slopes
    • 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

  • a further object of the present invention resides in a throttle valve regulation for use with piston-type combustion engines which are particularly suitable for motor vehicles operated in city traffic.
  • Still another object of the present invention resides in a piston-type internal combustion engine in which pressure differences between the piston top side and the piston bottom side are far-reachingly equalized.
  • FIGURE 1 is a somewhat schematic view, partly in cross section, of one control arrangement in accordance with the present invention for the pressure equalization in a four-cycle piston engine;
  • FIGURE 2 is a somewhat schematic view, partly in cross section, of a modified control arrangement in accordance with the present invention, with a piston-type internal combustion engine having a V-arrangement of the cylinders.
  • the adjusting mechanism 21 is in the illustrated position.
  • the engine sucks-in the combustion air by way of the fresh air filter whereas the crankcase is vented by the two venting lines 14 and If the engine is regulated by way of the throttle valve, then a high vacuum results in the suction pipe 16, 17.
  • the adjusting mechanism 21 of the throttle valve 19 which, for the most part, is actuatable in the direction of the arrow by means of a foot pedal in a conventional manner, is thereby so constructed that the adjusting movement caused by the vacuum in the suction pipe 17 can be realized independently of the adjusting mechanism 21, i.e., without causing fuel to be injected into the combustion space of the cylinders 12 and 13.
  • This can be readily achieved by any conventional means, known per se in the art and therefore not described in detail herein.
  • control means including electric switch means responsive to a predetermined level of vacuum pressure disposed within said suction pipe downstream of said throttle valve means, electromagnetic means operatively connected with said electric switch means and lever means movable by said electromagnetic means from a first, inoperative position to a position engaging with and actuating the adjusting mechanism of said throttle valve means to cause said throttle valve means to be opened to a predetermined extent when said predetermined level of vacuum pressure is sensed by said electric switch means, whereby maximum vacuum pressure in said suction pipe occurring when said engine is operating under reversed load conditions is effectively limited.
  • said throttle valve means includes means facilitating adjustment thereof by said adjusting mechanism independently of fuel supply adjustment to the cylinders of said internal combustion engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
US697396A 1967-01-14 1968-01-12 Piston engine with throttle valve regulation in the suction pipe Expired - Lifetime US3491732A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1967D0052012 DE1576350B2 (de) 1967-01-14 1967-01-14 Entlueftungsventil fuer eine hubkolben-brennkraftmaschine mit einer durch eine drosselklappe geregelten luftansaugung

Publications (1)

Publication Number Publication Date
US3491732A true US3491732A (en) 1970-01-27

Family

ID=7053827

Family Applications (1)

Application Number Title Priority Date Filing Date
US697396A Expired - Lifetime US3491732A (en) 1967-01-14 1968-01-12 Piston engine with throttle valve regulation in the suction pipe

Country Status (4)

Country Link
US (1) US3491732A (de)
DE (1) DE1576350B2 (de)
FR (1) FR1550866A (de)
GB (1) GB1197671A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799132A (en) * 1973-04-09 1974-03-26 Ferry Cap Set Screw Co Valve device and system employing the same
US3924588A (en) * 1974-01-18 1975-12-09 Lowell T Hager Positive crankcase ventilation system
US4013051A (en) * 1974-07-08 1977-03-22 Parcels Ross M Automotive crankcase emission control system
US4327683A (en) * 1978-11-03 1982-05-04 Robert Bosch Gmbh Apparatus and method for controlling the composition of the operational mixture in internal combustion engines

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516547A (en) * 1946-06-21 1950-07-25 Carter Carburetor Corp Crankcase ventilator
US2650577A (en) * 1951-02-23 1953-09-01 Gen Motors Corp Ventilating system
US2734525A (en) * 1956-02-14 Air flow control means
US2797674A (en) * 1954-11-01 1957-07-02 Gen Motors Corp Crankcase ventilation system
US3241535A (en) * 1964-01-20 1966-03-22 Fog Aire Inc Vacuum flow control for crankcase ventilation
US3372685A (en) * 1966-12-05 1968-03-12 Ardell T. Bestland Excessive crankcase pressure warning system and relief valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734525A (en) * 1956-02-14 Air flow control means
US2516547A (en) * 1946-06-21 1950-07-25 Carter Carburetor Corp Crankcase ventilator
US2650577A (en) * 1951-02-23 1953-09-01 Gen Motors Corp Ventilating system
US2797674A (en) * 1954-11-01 1957-07-02 Gen Motors Corp Crankcase ventilation system
US3241535A (en) * 1964-01-20 1966-03-22 Fog Aire Inc Vacuum flow control for crankcase ventilation
US3372685A (en) * 1966-12-05 1968-03-12 Ardell T. Bestland Excessive crankcase pressure warning system and relief valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799132A (en) * 1973-04-09 1974-03-26 Ferry Cap Set Screw Co Valve device and system employing the same
US3924588A (en) * 1974-01-18 1975-12-09 Lowell T Hager Positive crankcase ventilation system
US4013051A (en) * 1974-07-08 1977-03-22 Parcels Ross M Automotive crankcase emission control system
US4327683A (en) * 1978-11-03 1982-05-04 Robert Bosch Gmbh Apparatus and method for controlling the composition of the operational mixture in internal combustion engines

Also Published As

Publication number Publication date
DE1576350B2 (de) 1977-08-11
FR1550866A (de) 1968-12-20
DE1576350A1 (de) 1970-04-09
GB1197671A (en) 1970-07-08

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