~~ CVT RANGE ~~


CONTINUOUSLY VARIABLE TOP CLASS:
The new Steyr tractors STEYR CVT 120 STEYR CVT 130 STEYR CVT 150 STEYR CVT 170 Marking the start of a new generation on the tractor market. The main focus in the development of STEYR CVT tractors was placed on maximum productivity, economy and operating comfort. The STEYR CVT drive train constitutes the heart of the new tractor generation. The driving speed is controlled without any effort by means of the accelerator pedal or via the Cruise Control.
The electronic control system regulates the engine and transmission to attain the desired driving speed. Through easy operation it maximises productivity and ensures optimal comfort. The continuously variable STEYR CVT enables the operator to concentrate fully on his work.

ENGINE	STEYR CVT 120	STEYR CVT 130	STEYR CVT 150	STEYR CVT 170
Type	WD620 87	WD620 88	WD620 89	WD620 90
Cubic capacity	6.6	6.6	6.6	6.6
Bore/stroke	108/120	108/120	108/120	108/120
Rated power kW/hp at 2300rpm	85/115	92/125	107/145	121/165
Max. power kW/hp at 2100rpm	88/120	95/130	110/150	125/170
Max. torque Nm at 2100rpm	460	497	579	653
Torque rise % at engine	30	30	30	30
Torque rise % at PTO/OECD	37	37	37	37
Starting torque	127	126	125	124
Optimal fuel consumption g/kWh	209	208	207	207
Constant power range	450
Oil and filter change every	400 operating hours
Oil filling capacity litres	20
Generator std./opt.amp.	120/145
Injection pump	Stanadyne distributor injection pump, electronically controlled
Exhaust system	A post exhaust with integrated silencer
Air filter	Piclon filter with ejector dust discharge
Tank capacity litres	280

Hydrostatic unit:

A hydrostatic fixed displacement motor, which is directly pressurised with the oil flow conveyed by the pump, is mounted back to back onto a variable hydrostatic pump. Through electrohydraulic adjustment of the inclined plate (pivoting angle +k200, 55 cm3 capacity, 430 bar maximum pressure) in the hydrostatic pump both the speed as well as the rotational direction of the hydrostatic motor can be changed.

Compound planetary gear:

This unit consists of a 5-shaft planetary gear with two input shafts and three output shafts in which the actual superposition of the mechanical and hydrostatic power takes place.

Mechanical 4-range transmission:

Planetary units in which 4 speed ranges are attained are connected to the compound planetary gear. The changeover between the individual speed ranges is carried out through overlap closing of special claw clutches at synchronous speeds without tractive force interruption. A planetary unit with direct link in forward travel and reversal of rotational direction in reverse travel is connected to the above.

Transmission and vehicle electronics:

Special electronics enable control and regulation of transmission as well as interplay between the individual components.

	Back to back arrangement, without pipes, for high degree of efficiency
	Low capacity and low pressure in hydrostatic unit for max. service life
	Special hydrostatic unit not necessary

Power superposition with very high proportion of mechanical power for outstanding efficiency

	Up to 100% mechanical power
	4 mechanical speed ranges for optimal efficiency
	Long service life and minimal losses through positive clutches

	Complete control and monitoring of all operating modes
	Easy and rapid fault diagnosis

The mechanical power at the internal gear and the hydrostatic power at the sun gear of the compound planetary gear together provide the appropriate output in the respective speed ranges.

Through the superposition of the two input speeds (mechanical and hydrostatic) it is possible to achieve variable output speeds at a constant engine speed. In this way the travelling speed of 0 to 50 km/h can be achieved forwards and backwards with continuously variable control and without tractive force interruption.

The figure shows three clearly defined modes in the compound planetary gear.

The internal gear depicted in red supplies the mechanical portion of the power transmission, is directly driven by the engine and thus always rotates in the same direction according to the engine speed.

The sun gear shown in green is driven by the hydrostatic motor and transmits the hydrostatic power.

The speed and rotational direction of the sun gear can be varied by adjusting the inclined plate at the hydrostatic pump from the maximum speed in the opposite direction (mode 1), via stop (mode 2) to synchronous operation (mode 3) with the internal gear.

The respective output, which is now transmitted to the mechanical 4-range gear, results from the sum of sun gear and internal gear.

The STEYR CVT features a performance monitor as standard equipment
All information that is important for the operator can be read off or are adjustable on the performance monitor. Its operation is designed such that you can obtain the desired information very easily and quickly.
The CAN bus system in the STEYR CVT enables you to read out faults via the performance monitor.

	All information at a glance
	Display of travelling direction, neutral "N", park setting "P", cruise control and speed "C", as well as cold function "
	Adjustment of volume and time at the auxiliary valves
	CAN-BUS enables fault read-out

The most up-to-date digital electronic hitch control made by Bosch (EHR - D) is installed in the Steyr CVT. This system works with a position sensor and two electronic load-sensing bolts at the lower links in order to detect draft resistance and pulses sensitively.

The hitch control completely does away with mechanical components. Wear and declining control precision are thus ruled out.

The signals are processed in a separate electronics box and subsequently transmitted to the proportional control auxiliary valve.

A further component of the EHR-D with slip control as optional equipment is a radar sensor.
In addition, this EHR-D is equipped with an integrated self-diagnosis system.
Operation is carried out very comfortably on the components provided on the Multi-Controller II on the arm rest and on the right-hand control panel. See illustration.

Lifting / lowering / fast Implement penetration

These functions are provided on the Multi-Controller II, which is mounted on the arm rest. The buttons are identified through their orange colour.

1. Button 1 serves to activate the EHR and to lift / lower the hitch.

A. Activate 1 - Press button 1 once, the red pilot lamp 2 on the right-hand operating side goes out and the hitch moves up to the position to which the lift limitation is set.

B. Lift ~ lower 1 - By pressing button 1 alternately, the hitch is lifted to the position according to the lift limitation. Pilot lamp 2 lights up. If button 1 is pressed repeatedly, the hitch is lowered to the set position and lamp 2 goes out. (The lowering speed can be infinitely varied)

C. Fast Implement penetration 3 - By pressing and holding down button 3, the hitch is lowered to a point below the value of the set working depth at maximum speed.

D. Safety switch 4 - With this switch you can switch the power supply for the EHR and for all auxiliary valves off or on at the Multi-Controller II. It is secured against unintentional actuation during transport runs.

E. Stop button 5 - When actuated, all EHR functions are stopped immediately. For further operation the EHR must be activated again using button 1.

	All recurring work operations are controlled with only one button
	Enhancement of operating comfort and productivity
	Unintentional actuation ruled out - maximum safety

Setpoint adjusting wheel 1:

It provides for sensitive vertical positioning of the implement in position control mode and for precise setting of the desired working depth in tractive force control mode.
Position 0 = maximum lifting height
Position 9 = maximum working depth
Position 9 - 10 = float position (tractive force control not possible)

Pilot lamps:

2- Red, PTO management active

3- Green EHR deactivated and fault indication

4- Yellow, slip control on

5- Green, lift I lower hitch I float position

	Sensitive regulation through convenient handwheel
	Optimal overview of operating modes through well positioned pilot lamps

Outside button for hitch operation 6:

At the two rear mudguards green buttons are installed with which the hitch can be lifted and lowered from the outside for the duration of the operation.

inside button for hitch operation 7:

Same function as the outside buttons. When the button is pressed up or down, the hitch is raised or lowered only for the duration of the operation.

	Hitch operation possible from both mudguards
	Optimal comfort for mounting and dismantling implements
	The hitch can be temporarily adjusted without changing the fixed setting

Main control console for the STEYR CVT Tractor Range.

STEYR CVT tractors, the result of a new, outstanding vehicle concept, are taking over the leading position in the entire tractor market.

10 good reasons for deciding in favour of a STEYR CVT:

1.) "Green", electronically controlled, 6.6 litre turbo-engine with A post Exhaust on the right side for maximum productivity and optimal view

2) Continuously variable hydromechanical transmission for outstanding efficiency from 0 to 50 kmlh and active stop control

3.) Exclusively In STEYR CVT: engine-transmission management for maximum productivity and easy operation via accelerator pedal or Cruise Control

4.) 4-speed rear PTO 540/750/1000/1400 with PTO mode and management function as standard equipment.

5.) Suspended front axle from 120 to 170 hp for maximum driving safety and optimal comfort.

6.) Closed centre - load sensing hydraulic system with axial piston pump conveying capacity of 115 litres/min.

7.) Electrically actuated auxiliary valves with proportional control and timer function for optimal comfort and maximum productivity.

8.) Maximum lift capacity of 9900 kg and Bosch EHR-D.

9) Super-comfort cab with integrated arm rest operation and a noise level of only 72 db(A).

10.) Long maintenance intervals and rapid fault diagnosis by means of laptop thanks to state-of-the-art CAN-BUS system.