1. New generation of
mechanical
power
VARIATORS

2. Implementation
 Tractors
 Agricultural machinery
 Excavating machines
 Cars, trucks and buses
 Military machines
 Load-lifting machines
 Process equipment drives
 Motor-variators
 Power equipment
 Mining equipment
 Road-building machines

3. Working principle of a mechanical power variator
Detail 1
Main principle:
Point A fixing of the shaft
Detail 2
(a detail 2) in the necessary
time in a proper place with
moving possibility of
е N
other points. Points O and M M
are a spinning ax of the O
input (a detail 3) and the output
(a detail 2) shafts accordingly.
Distance О-М (further “е”) is
Detail 3
The eccentricity of a variator
and also can change over
А
the range from 0 to еmax due
to the mutual crank twirls
(a detail 1) and the input shaft (a detail 3)
Transfer relationship of a variator I = (R+e)/e, where R – radius (distance M-N) output shaft pitch
line (a detail 2). Change of a transfer relationship i occurs at the expense of eccentricity change
е. At е=0 the variator output shaft is not twirled at any turns of the input shaft.
The offered principle provides unaccented fixing of a point A and an output shaft uniform
rotation.

4. Mechanical power variator’ working
principle demonstration

5. Transmissions’ characteristics
The characteristic of transmission with frictional variators
Works effectively over the range speeds from Vmin to Vmax. Relation Vmax / Vmin = 3–6.
EFFICIENCY more low, than in a mechanical step transmission.
Moment The characteristic of transmission with МPV
Works effectively in a wide speed range. Vmax / Vmin is more than 1000.
Works effectively in a repent regime.
EFFICIENCY is commensurable with EFFICIENCY of a manual transmission.
The characteristic of mechanical transmission
Works with the greatest efficiency only in separate points.
The characteristic of ideal transmission
Turns

6. Areas of technical maintenance
W
kW
Ultrahigh more
than 500
High
100-500
Medium
10-100
Low
1-10
Ultralow less
than 1
Ultralow Low Medium High Ultrahigh
less than 10 10-200 200-3000 3000-10000 more than10000 N turns/min
Drive type
MPV
Hydraulic
Wedge-belt
Multidisc

7. Operational and technical advantages
 Possibility of installation with engines of various power, including more
than 500 kW.
 Effective work in a wide control range of speeds, Vmax / Vmin is more
1000.
 Transferred twisting moment up to 100 кN*м.
 High efficiency (92–95 %).
 Possibility to work without the clutch.
 Possibility of stable and long work on small target turns and the
maximum loadings (a repent regime).
 Weight and size characteristics are in 1,5–2 times less than at comparable
multistage gear reductors.
 High durability of work due to the minimum contact loadings (σk
≤ 15 kg/m2) on transferring elements of MPV.
 Simple manufacturing methods.

8. Comparison МPV with other types of variators
Drive type Wedge-
MPV Hydraulic Multidisc belt
Parameter
Efficiency, % 92-95 75-87 85-89 84-88
Kinematic range, Vmax / Vmin 1000 3 6 5
and more
Comparative metal consumption, % 70 100 95 93
Expected fuel economy at using МPV in comparison with other types of
variators:
in a usual regime, % 5–8
in a repent regime, % 30 – 40

9. Technical data of a class 1.4 tractors' automatic
transmission controlled by МPV
The maximum transferred power HP/кW 136/100
Nominal rotational speed of the input shaft, min-1 1700
Max rotational speed of the input shaft, min-1 less 2200
Rotational speed of the output shaft, min-1 more 2200
Min rotational speed of the output shaft, min-1 0
The maximum moment on the input shaft, Nм 600
The maximum moment on the output shaft, Nм 1700
Variator’s efficiency 0,94 – 0,96
Regulating of turns on the output shaft no-step, without rupture
of a power stream
Variator’s control system drive automatic (possible
transfer to manual regime)
Size, mm, less than length 565
width 480
height 390
Weight, kg 155

10. Sample of experimental design of MPV
Tractor variator

11. Patent protection of МPV
Ukraine
Russia
Belorussia
China
Stand tests of MPV with automatic control
Machines and systems institute(IMIS)
г. Kharkov, Ukraine

12. Contacts
Association «Ukrainian innovation companies»
49000, Ukraine, Dnepropetrovsk
81, Karl Marks Ave
Tel/fax: +380 56 2 350080
web: www.auic.com.ua
e-mail: auic@auic.com.ua
Contact person:
Vice president of the Association,
Dr. Alexander Pliskanovsky
mobile: +380 50 4801703
e-mail: plas@cmi.dp.ua