ES390678A1 - Method and apparatus for variable pitch propellers - Google Patents

Method and apparatus for variable pitch propellers

Info

Publication number
ES390678A1
ES390678A1 ES390678A ES390678A ES390678A1 ES 390678 A1 ES390678 A1 ES 390678A1 ES 390678 A ES390678 A ES 390678A ES 390678 A ES390678 A ES 390678A ES 390678 A1 ES390678 A1 ES 390678A1
Authority
ES
Spain
Prior art keywords
comparators
signal
output
generator
load
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
Application number
ES390678A
Other languages
Spanish (es)
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.)
KARLSTAD MEKANISKA AB
Metso Fiber Karlstad AB
Original Assignee
KARLSTAD MEKANISKA AB
Karlstads Mekaniska Werkstad AB
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 KARLSTAD MEKANISKA AB, Karlstads Mekaniska Werkstad AB filed Critical KARLSTAD MEKANISKA AB
Publication of ES390678A1 publication Critical patent/ES390678A1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/10—Propeller-blade pitch changing characterised by having pitch control conjoint with propulsion plant control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/07—Automatic control systems according to one of the preceding groups in combination with control of the mechanism receiving the engine power

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Eletrric Generators (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

An arrangement for automatic load control in naval engines having adjustable pitch propellers where upon exceeding the load of a preset limit value a signal is output to adjust the pitch of the propeller blades comprising an operable function generator to convert an input signal in the form of alternating current electrical voltage from a motor speed generator into a function that approximates a given load curve, the output signal from the function generator providing a measure of allowable adjustments for the fuel pump, settings of a signal selector, an adder in which respective signals from the function generator can be compared, and the signal selector four comparators connected to the output of the adder and an operable pulse generator to convert into a pulse train one or the other of the signals coming from the comparators which can be transmitted or to one or the other of two relays respectively associated to each of the two comparators whereby an activated relay can close in relation to time with frequency so that it switches a predicted operating voltage to operate a step adjustment servo mechanism, and the other two comparators being arranged so that a continuous control voltage will drive said servo when there is a large overload or low load. (Machine-translation by Google Translate, not legally binding)
ES390678A 1968-08-21 1971-04-28 Method and apparatus for variable pitch propellers Expired ES390678A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE11231/68A SE316700B (en) 1968-08-21 1968-08-21

Publications (1)

Publication Number Publication Date
ES390678A1 true ES390678A1 (en) 1973-06-16

Family

ID=20293582

Family Applications (2)

Application Number Title Priority Date Filing Date
ES370344A Expired ES370344A1 (en) 1968-08-21 1969-08-08 Method and apparatus for variable pitch propellers
ES390678A Expired ES390678A1 (en) 1968-08-21 1971-04-28 Method and apparatus for variable pitch propellers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
ES370344A Expired ES370344A1 (en) 1968-08-21 1969-08-08 Method and apparatus for variable pitch propellers

Country Status (13)

Country Link
US (1) US3588272A (en)
JP (1) JPS528593B1 (en)
CA (1) CA951410A (en)
CH (1) CH520013A (en)
DE (1) DE1942667C3 (en)
ES (2) ES370344A1 (en)
FI (1) FI49134C (en)
FR (1) FR2016143A1 (en)
GB (1) GB1284276A (en)
NL (1) NL159927C (en)
NO (1) NO129394B (en)
PL (1) PL80228B1 (en)
SE (1) SE316700B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3704077A (en) * 1970-11-03 1972-11-28 Barber Colman Co Thrust controller for propulsion systems with commonly driven, controllable pitch propellers
US3724970A (en) * 1971-02-23 1973-04-03 J Kobelt Apparatus for automatic pitch compensation in marine vessels
US4008567A (en) * 1975-04-28 1977-02-22 Joseph Hirsch Torque control system
US4036164A (en) * 1976-09-02 1977-07-19 General Electric Company Twin controllable pitch propellers operated from single prime mover
US4239454A (en) * 1978-08-24 1980-12-16 American Standard Inc. Overload protection control circuit for marine engines
JPS5756639A (en) 1980-09-19 1982-04-05 Nippon Kokan Kk <Nkk> Constant speed control for ship
JPS62186905U (en) * 1986-05-21 1987-11-27
GB9802570D0 (en) * 1998-02-07 1998-04-01 Duncan Ian J Propulsion system
CA2483109C (en) * 2003-10-20 2012-05-01 Flexxaire Manufacturing Inc. Control system for variable pitch fan
CN115180105B (en) * 2022-07-05 2024-07-05 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Pitch control system and method for distance-adjusting type lateral propeller

Also Published As

Publication number Publication date
CH520013A (en) 1972-03-15
ES370344A1 (en) 1971-07-01
SE316700B (en) 1969-10-27
NO129394B (en) 1974-04-08
US3588272A (en) 1971-06-28
FI49134B (en) 1974-12-31
DE1942667C3 (en) 1980-05-22
DE1942667B2 (en) 1979-09-06
FR2016143A1 (en) 1970-05-08
JPS528593B1 (en) 1977-03-10
CA951410A (en) 1974-07-16
NL6911199A (en) 1970-02-24
DE1942667A1 (en) 1970-02-26
FI49134C (en) 1975-04-10
NL159927C (en) 1979-09-17
NL159927B (en) 1979-04-17
PL80228B1 (en) 1975-08-30
GB1284276A (en) 1972-08-02

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