i shift

I shift is most modern gear technology which is introduced by Volvo. In india,it is used in B9r & B11r series buses. I shift is a gear system which can operate both automatically and manually.
Features
i shift comes with 12 speed gear system which can operste both manually and automaticly. There are two modes avilable in a i shift technology. They are Economic&Performance. In performance mode,you will get more power but the fuel consumption of the engine will be too high. In Economic mod, fuel consumption will be minimum but the engine delivers very less power. Drivers are always opting Performance mode. There is no clutch pedal and the gearshift is controlled by the ergonomic gear selector. The I-Shift is available as an overdrive or direct drive transmission
How it works
On the gear stick, you can see some letters
R- reverse
N- nuetral
A-Automatic
M- manual
StartingThe transmission gear lever must be in the N position or the engine will not start. If the gear lever is not in neutral, a starter protection message will appear in the DID along with the Information light and an audible warning. If there is not enough air pressure in the I-Shift air reservoir, a low air supply message will appear in the DID along with the Information light and an audible warning. Start the engine and allow the air pressure to build in the reservoir. Wait until the message and light go off before attempting to shift the transmission into gear. The gear selector lock must be depressed to move the gear lever from the N position. Also the brake pedal must be pressed down. If the brake pedal is not pressed down before attempting to move the gear lever from the N position, a brake interlock message will appear in the DID along with the Information light and an audible warning. Move the gear lever back to the N position, apply the brake pedal and move the gear lever to the desired gear. With the Premium gear selector, the operator can always select a lower start gear in both the A and M position. Also, the operator can always selecta higher start gear in the R position.
When the vehicle is stopped:
1. Apply the parking brake.
2. Move the gear lever to the N position on the gear selector.
3. Switch off the engine.
DRIVING
The most efficient way to operate the vehicle is to use the automatic drive program, the A position on the gear selector. Gear changing is automatic and the operator can concentrate on the road ahead. With the Premium gear selector, the operator has limited ability to change gears manually with the gear selector in the A position. In addition, the brakecontrol switch should be in the A position to maximize the integration of the transmission and brake system. This means optimum performance and fuel economy at all times.When the gear selector is in the A position and the engine speed is below 1500 rpm, moving the brake control to the B position will cause the transmissionto downshift. Move the gear lever to the M position to hold the transmission in the newly selected gear. In difficult driving conditions such as forests, construction sites and off-road, manual mode, the M position on the gear selector, and Performance Mode (if equipped), give the operator more control. When changing gears manually, the accelerator pedal should not be released.A PositionWhen the Premium gear selector lever is in the A position, the current transmission operating gear is displayed along with up and down arrows on each side of the gear display. These arrows indicate the number of available manual upshifts or downshifts based on the current driving conditions. The operator can use the manual gear selection buttons to upshift or downshift asindicated by the arrows. The transmission will automatically upshift and downshift as necessary tomaintain the desired vehicle speed for the current driving conditions. The number of available manual upshifts and downshifts will change as driving conditions change. Press the manual gear selection buttons multiple times to “skip shift” or jump up or down more than one gear at a time (three gears maximum).M PositionWhen the Premium gear selector lever is in the M position, the current gear is displayed along with theup and down arrows. The transmission will not automatically change gears as the driving conditions change. The operator can use the manual gear selection buttons to upshift or downshift manually. The number of available upshifts and downshifts will change as driving conditions change. With the Premium gear selector, when the vehicle is stationary, the gear lever is in the M position and the transmission has detected conditions that require a lower vehicle start gear, a select lower gear message will appear in the DID along with the Information light and an audible warning. Move the gear lever to the A position on the gear selector, or use the manual gear selection button to select a lower start gear. If necessary, continue to use the manual gear selection button to select lower start gears until the message and light go off. With the Basic gear selector, when the vehicle is stationary and the gear lever is moved from the A position to M, the vehicle start gear will change to first. To lock the transmission in the current gear, move the gear lever from the A position to the M position. This function can be usedfor all 12 forward gears. To return to the automatic program, move the gear lever back to the A position.R PositionWhen the Premium gear selector lever is in the R position, the current gear is displayed along with theup and down arrows. The transmission will not automatically change gears as the driving conditions change. The operator can use the manual gear selection buttons to upshift or downshift manually.
the vehicle is moving and the gear lever is moved from the A or R positionto M, the transmission will stay in the current gear until the lever is moved back to A, R or N