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Компания «Allison Transmission» - это мировой лидер по производству АКПП для автобусов, тягачей, специальной техники и нефтяного оборудования. Более чем 90-летний опыт в проектировании и производстве автоматических трансмиссий позволил добиться высочайшего качества, надежности и позволяет работать технике в любых дорожных и климатических условиях.
 

«НДГС» - как дистрибьютор «Allison», ставит перед собой целью как установку автоматических коробок передач на российское оборудование, так и обеспечение квалифицированного сервиса в течение всего периода эксплуатации АКПП.  

Additional functions of Allison Transmissions

Automatic Neutral

Fewer shifts. Quicker routes. Peak efficiency.

Smart controls equal improved performance. The transmission electronic controls know when to command Neutral – automatically.

No need for the driver to shift. Automatic Neutral gets it done – on every job and at every stop. It’s one less thing the driver has to do.

Operating Examples

The operator of a concrete truck applies the parking brake prior to discharging. Auto Neutral shifts the transmission to Neutral automatically. Engine rpm can now be safely increased because the transmission cannot be inadvertently left in a moving range.

In a propane truck, the operator prepares to fill a tank by coming to a stop and applying the parking brake. Auto Neutral automatically shifts the transmission to Neutral, making it safe to raise engine rpm.

Fine Tuning

The maximum allowable transmission output speed for Neutral engagement can be adjusted.

A variety of options to the basic feature are available, including single and dual inputs, and dual input with service brake status.

 

Auxiliary function range inhibit

No range until it’s closed, down, or put in its proper place.

When the switch is OPEN , the transmission stays in NEUTRA L

Like an extra set of eyes – making sure outriggers are up, ladders are stowed, doors are shut. Avoid unwanted shifts out of Neutral. Integrates with virtually any vocational vehicle component.

Operating Examples

A fire truck equipped with Auxiliary Function Range Inhibit will not shift into a moving range when a ladder or aerial equipment is in use.

Auxiliary Function Range Inhibit prevents a utility truck from shifting into a moving range when an outrigger is down or when the bucket is up.

A school bus with Auxiliary Function Range Inhibit will not shift into a moving range unless the service brakes are applied.

Fine Tuning

One or more switches can be used in series to prevent range selection.

 

Auxiliary hold

Precise speed control. Maximized engine braking. All at your fingertips.

When the switch is ON, the range is HE LD

Flip the switch and hold the range – the range that’s just right for what’s ahead. Maintain consistent speed on downhills. Get the most out of vehicle and engine braking. Drive with confidence.

Operating Examples

The driver wants to optimize downhill engine braking by holding the transmission in 3rd range. When the transmission shifts into 3rd range, the driver enables Auxiliary Hold by positioning a dash switch. The transmission won’t upshift beyond 3rd range, but downshifting and lockup clutch operation are normal.

A snow plow operator maintains the ideal speed for plowing by enabling Auxiliary Hold to “lock” the transmission in a specific range.

A paint truck maintains a consistent speed while striping because the operator uses a dash switch to enable Auxiliary Hold and keep the transmission in the perfect range for the job.

 

Direction change enable

Prevent unwanted shifts from Neutral, Drive and Reverse.

Shifting from Neutral to Drive? Direction Change Enable won’t let it happen unless the right button is pushed or the service brakes are applied. Safeguard against unwanted direction changes – Neutral to Drive or Reverse, Drive to Reverse, Reverse to Drive – by monitoring for an additional signal to verify the operator is ready for the shift.

Operating Examples

The operator of a bus must press a dash switch or have the service brakes fully applied before attempting to make a shift out of Neutral into Drive or Reverse, helping to minimize the chance that a moving range will be inadvertently selected.

A street sweeper operator must push a dash button before attempting a shift out of Neutral, ensuring that the shift is truly desired, and minimizing the chance that the vehicle will move without the operator being prepared.

A refueling truck will not shift from Drive to Reverse unless a high pressure brake switch indicates that the brakes are fully applied. This prevents abrupt direction changes, minimizing load shift damage.

Fine Tuning

A variety of input wires are available which can be used to activate this feature.

 

Engine brake enable

Get the most from engine and exhaust brakes through total transmission system integration.

Flip the dash switch and let the transmission controls handle the rest. Smart electronics recognize the most efficient times for engine brake application. The controls instantly command shift characteristics which optimize braking and vehicle performance.

Operating Example

The operator enables the engine brake using a dash switch. When the transmission controller sees that the throttle is closed and the torque converter lockup clutch is applied, it commands a downshift to a pre-determined, or “pre-selected,” range. The controller also provides a signal which enables the engine/exhaust braking system. The newly activated shift characteristics typically include early downshifts which aid overall vehicle braking.

Fine Tuning

A variety of Engine Brake Enable options for exhaust brakes, single-level compression brakes and multi-level compression brakes are available.

When the exhaust/engine brake becomes active, the transmission downshifts to a programmed range which can be changed to fit various vehicles and operating conditions. Default factory setting is 2nd or 4th range.

 

PTO request

Integrate PTO operation with the transmission system for precise control and protection.

PTO integration made simple using the transmission electronic controls. Commands how and when the PTO engages. Monitors operating conditions to minimize potential damage and hazards.

Operating Example

The operator requests PTO operation by pressing a switch. The transmission controller sees this signal, then looks to make sure that several operational conditions have been met, including transmission output speed, engine speed and throttle position. When all the appropriate conditions are correct, the transmission controller sends a signal which enables the PTO system. If the controller senses potentially damaging overspeed conditions, the PTO is commanded off until it can be safely re-engaged at a lower rpm.

Fine Tuning

The following items are available for adjustment:

Maximum engine speed for PTO engagement.

Maximum engine speed for PTO operation.

Maximum transmission output speed for PTO engagement.

Maximum transmission output speed for PTO operation.

Optional use of MODE button to activate the feature.

 

Range indicator

Make things happen when a range is attained.

Choose the range. Create a reaction. Range Indicator provides a useable electric signal when the transmission shifts to a chosen range.

Operating Examples

In a municipal pump unit, Range Indicator illuminates a dash light to let the operator know that 4th range has been attained for direct drive (1:1) split-shaft PTO operation.

The Range Indicator feature on a recovery vehicle illuminates high-powered back-up lights when the transmission is in Reverse.

Range Indicator in a tank cleaner prevents split-shaft PTO operation unless 4th range has been attained by the transmission.

Fine Tuning

Any combination of ranges can be selected to activate the Range Indicator feature. For instance, the feature can be designed to activate when the transmission is in Neutral, when the transmission is in 1st range or when any moving ranges are attained.

 

Secondary shift schedule

Select between two pre-programmed shift patterns — quickly and easily.

Match shift characteristics to the driving conditions with the simple push of a button.

Operating Examples

The operator of a pickup and delivery vehicle uses the Primary Performance Shift Schedule to carry a full load with ease. When unloaded, the operator switches to the Secondary Economy Schedule, enabling lower rpm shifts for smooth operation and improved economy.

The operator of a dump truck drives to a gravel plant using the Primary Shift Schedule. The Primary Shift Schedule provides ranges one through six while driving to the gravel plant. Once loaded at the plant, the Secondary Shift Schedule prevents upshifts beyond 1st to limit speed and enhance control.

Fine Tuning

This feature can be programmed to switch between Performance and Economy Shift Modes, or it can be programmed to provide specific ranges depending on whether or not the feature is active (example – upshifts in Secondary Mode may be limited to 5th range with 6th range attainable only in Primary Mode).

This feature is often activated using a dash switch. The MODE button can be programmed to activate this feature.

 

Dual input auxiliary function range

Prevents shifts to range when equipment is in use.

WHEN EQUIPMENT IS IN USE, THE TRANSMISSION STAYS IN NEUTRAL

Provides an added level of safety and confidence by integrating two separate signals from different specialized vehicle equipment. Keeps the transmission in Neutral when both inputs are active. Notifies the operator when one is active and the other is not.

Operatin g Example

A fire truck equipped with Dual Input Auxiliary Function Range Inhibit will not shift into a moving range once the outriggers are down and the aerial ladder is up. Range can be attained once either input deactivates. If the ladder is up for more than 2 minutes and the outriggers haven’t been deployed, the SERVICE TRANS Light comes on, a diagnostic code stores in the controller memory, and the featurebecomes inactive.

Fine Tuning

Dual Input Auxiliary Function Range Inhibit can be integrated with virtually any vocational vehicle component

(outriggers, aerial booms)

 

Fire truck pump mode

Provides quick, efficient transition between Road Mode and Pump Mode.

the transmission controls command an automatic shift to 4th range when all

the appropriate conditions are sensed

The 3000 and 4000 Product Families transmission controls command an immediate shift to 4th range once the PTO engages and Drive is selected. One-to-one direct drive for split-shaft PTOs.

The 1000 and 2000 Product Families transmission controls command 3rd range once the PTO engages and Drive is selected. 3rd lockup is obtained when the turbine rpm reaches 1100 rpm. 3rd Lockup Pump Mode ratio is 1:4 to 1.

Operating Example

The driver of a fire truck selects Neutral, applies the park brake, then turns on the Pump Mode Dash Switch. The Pump Mode Requested Light comes on. When the split-shaft PTO engages, the Pump Engaged Light comes on. The operator selects Drive, and the transmission controls command a shift to 4th range lockup. The OK To Pump Light illuminates. The feature is de-activated when Neutral is selected while output shaft speed is below 1000 rpm. A Momentary Transmission Brake Switch incorporated into the feature can be pressed to stop output shaft rotation when transitioning back to Road Mode.

With the 1000 and 2000 Product Families, the lockup clutch releases at 1000 turbine rpm when returning to idle and transitioning back to Road Mode.

Fine Tuning

Two versions are available (Operator Only Activated and Operator and Pump Activated) for enhanced interface flexibility.

 

Retarder enable

Peak vehicle braking – and more.

Get the best braking possible through total transmission retarder/vehicle integration. Electronic controls precisely blend the transmission, retarder and service brakes for peak efficiency.

Operating Example

An intercity bus operator positions a dash switch to enable the retarder system. The transmission electronic controls look at the Anti-Lock Brakes (ABS) status, throttle position, road speed, current range, retarder temperature and service brake status. If all these items are within programmed limits, the retarder will operate. Application systems vary, but popular versions include automatic apply based on service brake pressure, a multi-position lever and a separate retarder apply pedal.

Fine Tuning

Use this feature’s integrated outputs to customize the installation. Available outputs include a retarder or sump over-temperature light and a retarder “on” indicator. A variety of apply configurations and OEM supplied devices are available to precisely match the vehicle

 

Output speed indicator

Lets you know when you exceed the speed.

Exceed a preset output speed and the transmission electronic controls produce a useable electric signal for warning devices and other auxiliary vehicle equipment.

Operating Examples

Output Speed Indicator is used to enable rear steering in an articulated fire truck. Once a specific low speed is met, rear steering becomes enabled.

A transit bus operator relies on an Overspeed Light to let him know when the vehicle has exceeded a recommended speed limit. The light stays on until the speed returns to a level which is comfortably below the overspeed point. The operator is able to focus on driving conditions and the passengers rather than having to constantly monitor speedometer readings.

Fine Tuning

The transmission output speeds to activate and deactivate the feature are adjustable. The activation point must be higher than the deactivation point.

Programming for 3000 and 4000 Product Families provides the option for a second Output Speed Indicator feature.

 

Two speed axle enable

Damage protection and electronically controlled shifting for two-speed axles.

More than just an axle hi/low switch, Two Speed Axle Enable integrates the transmission electronic controls to block axle shifts until the vehicle speed is low and the throttle is closed.

Operating Example

In a street sweeper, Sweep Mode (low axle) is requested by positioning a dash switch. The shift is blocked and the sweeper remains in Road

Mode (high axle) until the vehicle has slowed and the throttle is at or near idle. Once these conditions are met, the electronic controls allow the axle shift and provide a signal to adjust the speedometer for the axle ratio change.

Fine Tuning

Low axle enable speed is adjustable.

 

Reverse enable

Protects people and equipment from unwanted shifts to Reverse.

Improve safety. Protect equipment. Requires the operator to select Reverse and push the Reverse Enable switch at the same time.

Operating Example

A street sweeper operator stops to change direction. To shift into Reverse, a dash switch is pushed at the same time Reverse is selected.

The transmission makes the shift if normal inhibits are inactive (engine at idle, throttle closed, low road speed).

Fine Tuning

A variety of dash-mounted switches can be used, but a “momentary” switch is recommended.

 

Neutral indicator for PTO

Automatically activates fast idle and PTO when Neutral is selected.

Controls Fast Idle And PTO Op eration For Efici ency And Safety

Ensures fast idle activates only when the transmission is in Neutral. Provides controlled PTO operation. Prevents range selection when engine speed is high. Selecting Drive interrupts fast idle and allows the transmission to shift into gear if engine speed falls below 900 rpm within approximately 2 seconds.

Operating Example

A utility truck equipped with Neutral Indicator for PTO arrives at a work site with the PTO dash switch “on.” The operator selects Neutral.

The transmission controls sense when Neutral is attained, then activate the PTO and engine fast idle circuits. The transmission controls monitor engine and PTO operation to provide overspeed protection. Once the work is complete and the equipment is stowed, the operator re-selects a driving range. The engine fast idle and PTO circuits are disabled. The transmission controls look for engine speed to be below 900 rpm within 2.5 seconds before allowing the selected range. If engine speed remains above 900 rpm after the 2.5 second period, the transmission stays in Neutral and the operator must re-select the range.

Fine Tuning

The following items are available for adjustment:

• Maximum engine speed for PTO engagement.

• Maximum engine speed for PTO operation.

• Maximum transmission output speed for PTO engagement.

• Maximum transmission output speed for PTO operation.

 

Automatic Neutraldual input

Automatic shifts to Neutral for quick PTO operation. Get more done by doing less.

“No Touch” Shifting To Ne utral For Fast, Safe PTO Ope ration

Smart transmission controls simplify operation and improve efficiency. As the vehicle slows, Neutral is automatically selected, the PTO engages, then the engine high idle system activates. With the flip of a single switch or the pull of a lever, stop-to-stop shift selector operation is all but eliminated. The controls monitor engine and vehicle speeds to identify the safest, most efficient activation points. The results are increased productivity, improved safety, and less wear and tear on the vehicle and the operator.

Operating Example

The operator of a rear loading refuse packer approaches a stop. The PTO and Auto Neutral dash switches are “on.” As the vehicle slows, the operator applies the work brake. The transmission shifts into Neutral, the PTO engages, and the engine attains fast idle mode. The operator can now leave the cab and the vehicle accessories are operational. When done, the operator re-enters the cab and releases the work brake.

The controls return the engine to normal idle rpm and disengage the PTO. If all the appropriate conditions are met (engine at idle, vehicle stopped, foot on the service brakes), the transmission automatically shifts back into Drive.

Fine Tuning

This feature can be incorporated with the park brake or a work brake.

The vehicle service brakes are typically integrated with this feature.

Variations of this feature allow use with either rear load, front load, or side load refuse vehicles.

A version of this feature is available specifically for emergency vehicles.

The following items are available for adjustment:

• Maximum transmission output speed for Neutral shift enable.

• Maximum engine speed for PTO engagement.

• Maximum engine speed for PTO operation.

• Maximum transmission output speed for PTO engagement.

• Maximum transmission output speed for PTO operation.

 

4th lockup pump mode

Optimizes split shaft PTO integration and operation.

Automatically Commands 4th Range Lockup To Dr ive Split-Shaft PTO s

4th Lockup Pump Mode provides safe, easy split-shaft PTO operation. Step-by-step operator inputs control split-shaft operation and automatically shift the transmission to 4th lockup for direct 1:1 drive from the engine. A momentary transmission brake switch incorporated into the feature can be pressed to stop output shaft rotation when transitioning back to Road Mode.

Opera ting Example

The operator of a sewer cleaner prepares to pump by selecting Neutral, applying the park brake, and turning on the Pump Mode Requested Switch. The transmission controls sense these inputs and activate the split-shaft pump mode. When the split-shaft PTO engages, the Pump Engaged Light comes on and the operator selects Drive. The transmission controls command a shift directly to 4th range lockup, the OK To Pump Light illuminates, and the split-shaft PTO engages. Once pumping is complete, the operator selects Neutral. The shift is allowed if transmission output speed is less than 1000 rpm. The Momentary Transmission Brake Switch is used to slow or stop the transmission output shaft, if necessary (it only becomes active if transmission output speed is below 175 rpm). The operator returns the Pump Mode Switch to the normal Road Mode position, disengaging the split-shaft PTO.

Fine Tuning

Two interface options are available for flexible vehicle and component integration.

 

PTO Request

Integrate PTO operation with the transmission system for precise control and protection.

PTO integration made simple using the transmission electronic controls. Commands how and when the PTO engages. Monitors operating conditions to minimize potential damage and hazards.

Operating Example

The operator requests PTO operation by pressing a switch. The transmission controller sees this signal, then looks to make sure that several operational conditions have been met, including transmission output speed, engine speed and throttle position. When all the appropriate conditions are correct, the transmission controller sends a signal which enables the PTO system. If the controller senses potentially damaging overspeed conditions, the PTO is commanded off until it can be safely re-engaged at a lower rpm.

When using this feature and operating in Neutral, the lockup clutch will engage at 900 turbine rpm to give precise engine rpm control for the PTO. The lockup clutch will disengage at 800 engine rpm. Factory default settings.

Fine Tuning

The following items are available for adjustment:

Maximum engine speed for PTO engagement.

Maximum engine speed for PTO operation.

Maximum transmission output speed for PTO engagement.

Maximum transmission output speed for PTO operation.

PTO speed at which lockup applies.


REDUCED ENGINE LOAD AT STOP (RELS)

DESCRIPTION: When the transmission is in first range and this function is enabled, the TCM automatically

commands transmission operation at a reduced load state which is similar to Neutral. Required

conditions for enabling the function are:

• vehicle is at a stop

• service brakes are applied

• throttle position is low

RELS is disabled when the throttle is advanced, Drive is selected at the shift selector, or the request

circuit is switched open — which will occur if the service brakes are released, the dash enable switch is

opened, and/or an additional optional interlock (i.e. door switch) is opened. If an Automatic Neutral input

function is enabled while RELS is in an active state, RELS will be disabled.

A service brake pressure switch must be included in the activation circuit for this function. The location

of this switch is critical to the disabling of RELS each time the service brakes are released during normal

driving cycles, in order to minimize the potential for vehicle roll-back if the feature is activated when

the vehicle is stopped on an incline.

USES:

• Reduces heat load in the transmission in high start/stop duty cycles.

• Improved fuel economy by reducing engine load when the vehicle is at a stop

 

Diagnostic interface - allison transmission obdii