GB736975A - Improvements in hydraulic dynamometers, brakes and couplings - Google Patents

Improvements in hydraulic dynamometers, brakes and couplings

Info

Publication number
GB736975A
GB736975A GB2303752A GB2303752A GB736975A GB 736975 A GB736975 A GB 736975A GB 2303752 A GB2303752 A GB 2303752A GB 2303752 A GB2303752 A GB 2303752A GB 736975 A GB736975 A GB 736975A
Authority
GB
United Kingdom
Prior art keywords
valve
fluid
pressure
piston
dynamometer
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
GB2303752A
Inventor
William Nevile Bathurst
Ivor Maurice Jarvis
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.)
Heenan and Froude Ltd
Original Assignee
Heenan and Froude Ltd
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 Heenan and Froude Ltd filed Critical Heenan and Froude Ltd
Priority to GB2303752A priority Critical patent/GB736975A/en
Publication of GB736975A publication Critical patent/GB736975A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/02—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades or like members braked by the fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H41/00—Rotary fluid gearing of the hydrokinetic type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/16—Rotary-absorption dynamometers, e.g. of brake type
    • G01L3/20—Rotary-absorption dynamometers, e.g. of brake type fluid actuated

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

736,975. Dynamometers. HEENAN & FROUDE, Ltd. Dec. 10, 1953 [Sept. 13, 1952], No. 23037/52. Class 106 (2). [Also in Groups XXIX and XXXIV] A hydraulic absorption dynamometer has a valve A, Fig. 1, in its fluid outlet B, the force necessary to move the valve A against the pressure of the.fluid in the dynamometer being obtained from a pressure generator K<SP>2</SP>. By controlling the pressure in the dynamometer the torque absorbed can be regulated. The rotor J of the pressure generator K<SP>2</SP> is mounted on a shaft driven at the same speed as or at a speed proportional to the speed of the rotary part of the dynamometer. Low-pressure fluid is fed to the generator K<SP>2</SP> through a pipe m<SP>1</SP> and the fluid pressure generated is conveyed by a. pipe m<SP>4</SP> through a needle valve N<SP>1</SP> to one face of a piston D coupled to the valve A. The fluid acting on this face of the piston D can be bled through a needie valve N<SP>2</SP> and pipes m<SP>5</SP> to the opposite face of the piston D, this opposite face of the piston D being also in communication with the low pressure fluid in the pipe m<SP>1</SP>. When the valve N<SP>1</SP> is fully opened and the valve N2 is fully closed the force on the piston D tending to close the valve A will be a maximum. By slowly closing N<SP>1</SP> and causing the restriction to the fluid flow through the valve N<SP>2</SP> to be correspondingly reduced, the force tending to close the valve A can be progressively reduced until it approaches zero. The valve N<SP>2</SP> and the pipe mB may be omitted if desired. Figs. 5 and 6 illustrate the construction of the needle valves N<SP>1</SP> and N<SP>2</SP>. The controlling fluid is caused to flow through sharp-edged ports P which are varied in effective area by moving a spindle N axially through screw means associated with a hand wheel n<SP>1</SP> or other means. Specifications 24949/10, [Class 106 (ii)], and 473,270 are referred to.
GB2303752A 1952-09-13 1952-09-13 Improvements in hydraulic dynamometers, brakes and couplings Expired GB736975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2303752A GB736975A (en) 1952-09-13 1952-09-13 Improvements in hydraulic dynamometers, brakes and couplings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2303752A GB736975A (en) 1952-09-13 1952-09-13 Improvements in hydraulic dynamometers, brakes and couplings

Publications (1)

Publication Number Publication Date
GB736975A true GB736975A (en) 1955-09-14

Family

ID=10189079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2303752A Expired GB736975A (en) 1952-09-13 1952-09-13 Improvements in hydraulic dynamometers, brakes and couplings

Country Status (1)

Country Link
GB (1) GB736975A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105196B (en) * 1957-05-09 1961-04-20 Heenan & Froude Ltd Hydraulic dynamometer
CN103486160A (en) * 2013-09-13 2014-01-01 重庆交通大学 Double-acting hydraulic retarder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105196B (en) * 1957-05-09 1961-04-20 Heenan & Froude Ltd Hydraulic dynamometer
CN103486160A (en) * 2013-09-13 2014-01-01 重庆交通大学 Double-acting hydraulic retarder
CN103486160B (en) * 2013-09-13 2015-12-09 重庆交通大学 Double-action hydrodynamic retarder

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