GB832776A - An improved hydraulic power transmission system particularly for vehicles - Google Patents

An improved hydraulic power transmission system particularly for vehicles

Info

Publication number
GB832776A
GB832776A GB2146256A GB2146256A GB832776A GB 832776 A GB832776 A GB 832776A GB 2146256 A GB2146256 A GB 2146256A GB 2146256 A GB2146256 A GB 2146256A GB 832776 A GB832776 A GB 832776A
Authority
GB
United Kingdom
Prior art keywords
pump
valve
lines
motor
common
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
GB2146256A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2146256A priority Critical patent/GB832776A/en
Publication of GB832776A publication Critical patent/GB832776A/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
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation
    • F16H61/448—Control circuits for tandem pumps or motors
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/44—Control of exclusively fluid gearing hydrostatic with more than one pump or motor in operation

Abstract

832,776. Hydraulic transmissions. PAYNE, R. Oct. 10, 1957 [July 11, 19561, No. 21462/56. Class 69 (2). An hydraulic transmission for vehicles comprises a rotary abutment pump having several sections selectively connectible to a rotary abutment motor to give a plurality of gear ratios. A pump 1 comprises parts A, B, C, each of which has a vaned rotor 24 splined to a common sleeve 25 driven through epicyclic reduction gearing from an input shaft 26. Each rotor co-operates with two rotary abutments 30 which are geared to the sleeve 25 so that the pump has six sections, each section having an inlet channel 43 leading from a common chamber 48, and a discharge channel 44 from which liquid can discharge either through a non-return valve 44<SP>1</SP> to a common chamber 49 or to a by-pass chamber 50 through a valve 52 operable by a cam 55 on a common cam-shaft 56. Chambers 48, 49 are connected through a reversing valve 57 to lines 3, 4 connected to a motor 5. Two motors may be provided, each connected to an output shaft to form an hydraulic differential, or one motor may be provided, in which case it can be formed with the pump as a self-contained assembly. A valve 24<SP>1</SP> is provided for bypassing the motor to allow free wheeling. A shock absorbing device 70 is connected between the lines 3, 4, and the lines are also connected, through a change-over valve 68 to a tank 59 to supply replenishing liquid and maintain a minimum pressure in the lowpressure line. The air space of the tank is connected to the induction manifold of the engine to maintain a degree of vacuum to prevent aeration. For cooling, part of the liquid in the return line may be passed through a radiator the inlet and outlet of which are both connected through change-over valves to the lines 3, 4. To increase the number of gear ratios available the pump sections may have different capacities. In a modification a pump is provided which has five ports, each part comprising a rotor co-operating with a single rotary abutment.
GB2146256A 1956-07-11 1956-07-11 An improved hydraulic power transmission system particularly for vehicles Expired GB832776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2146256A GB832776A (en) 1956-07-11 1956-07-11 An improved hydraulic power transmission system particularly for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2146256A GB832776A (en) 1956-07-11 1956-07-11 An improved hydraulic power transmission system particularly for vehicles

Publications (1)

Publication Number Publication Date
GB832776A true GB832776A (en) 1960-04-13

Family

ID=10163352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2146256A Expired GB832776A (en) 1956-07-11 1956-07-11 An improved hydraulic power transmission system particularly for vehicles

Country Status (1)

Country Link
GB (1) GB832776A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279637A (en) * 1964-09-08 1966-10-18 Robert A Olson Hydraulic drive control mechanism for vehicles
CN112797159A (en) * 2021-02-10 2021-05-14 吴泽法 Speed changer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279637A (en) * 1964-09-08 1966-10-18 Robert A Olson Hydraulic drive control mechanism for vehicles
CN112797159A (en) * 2021-02-10 2021-05-14 吴泽法 Speed changer

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