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Volvo Bus Concept

Vehicle Structure
The body is based on the patented Volvo Bus concept, where an aluminium alloy providing superior corrosion resistance is used. The structure is made of extruded aluminium profille. Chassis floor structure built-up by steel RHS-profiles, welded together with open c-profile cross members.The combined aluminium and steel frame combines good stability with low weight and gives long service life and increased loading capabilities. Rigidity provides good stability and driving.VOLVO 7900 CNG 300x82 Volvo Bus Concept

Glazing
Glued one-piece panoramic wind screen, clear or green tinted, side windows with single or double glazing clear or tinted, rear window with single glazing tinted only.
All glazing, bronze tinted apart from drivers window which is clear only. Driver’s side double glazed window manually operated; without electric heating or single glazing with heating. Available 6 or all hopper windows (in total 10 for 2+2+2+2 or 11 for 2+2+2+0 door layout).

Exterior Vovo
Front and rear walls made from fibre glass and ABS elements. External side panelling are made of a single sheet of aluminium under the window line combined with glass fibre plates and is finished of with an aluminum lower skirt for the sides. Hatches are made of the same glass fibre panelling.
Wheel arches of DCPD. Roof made of 1 mm thick single-piece aluminium sheet, glued to the roof frame. Mekra or Wilke external mirrors. Electrically or manually adjusted,heated or not. 3-piece bumpers. Top hinged service compartment hatches with snap or cylinder locks. Mounted outside wide angle mirror on the RHS, flag holder Available: school bus equipment, warning signalization when front hatch open, head lamp cleaner, exit light above door2, high rear direction indicator. 1 or 4 roof hatches, electrically or manually operated; with emergency exit mechanisms.

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7900 VOVO Specs Handbrake, Streering Gear,Brake System, AC System

Buslovers Streering will membehas about gear, brake system, ac system on the buses volv 7900. for more details about 7900 CNG vovo following explanation.
Glazing Volvo 7900 CNG
Glued one-piece panoramic wind screen,clear or green tinted, side windows with single or double glazing tinted, rear window with single glazing tinted only. All glazing, bronze tinted apart from drivers window which is clear only. Driver’s side double glazed window manually operated; without electric heating or single glazing with heating. Available 4 or all hopper windows (in total 8 for 2+2+2 or 9 for 2+2+0 door layout).
Vehicle Structure Volv CNG
The body is based on the patented Volvo Bus concept,where an aluminium alloy providing superior corrosion resistance is used. The structure is made of extruded aluminium profile. Chassis floor structure built-up by steel RHS-profiles, welded together with open c-profile cross-members. The combined aluminium and steel frame combines good stability with low weight and gives long service life and increased loading capabilities. Rigidity provides good stability and driving.

Handbrake
Air operated spring brake acting directly on the rear wheels. Application is infinitely variable by means of a control the fascia.

Steering gear
Power steering of ball and nut type with builtin servo unit. Two inter-linked intermediate steering arms and individual link-rods to each side’s steering arm. Pitman arm connected to the relay arm via a link-rod. Steering wheel diameter ..450 or 500 mm
Optional………………………Steering wheel lock

Air and brake System
Separate circuits for front wheels, drive axle wheels, tag/pusher wheels. Park brake circuit acting on drive axle wheels. Volvo disc brakes combined with electronic braking system EBS 5,which controls ABS/ASR functions. Available features:brake blending, dual retarder control, drag torque control, hill startaid,brake temperature warning, poor brake performance warning, door brake, brake assistant, automatic diff lock, lining wear sensing and analysis, automatic calibration after brake pad change. System operating pressure 10.8bar Compressor capacity at 10 bar and engine spees 33 r/s (2000r/m) Compressor capacity at 10 bar and engine speed 33 r/s (2000 r/m)……………..16,5 dm3/s (1000 l/m)
Compressor ratio …………………………1.35:1

Ventilation, Haeting and AC System
Water heating system with 2-pipe convectors and blower heating for driver’s area, door1, pram area and door2 if fitted. Available ventilation units in roof channels with or without heating and roof air conditioning unit with heating + cooling. Driver’s cabin has convector or blower heating and can have own AC system with a timer. Door1 entrance can be heated by electrical mats in floor, preventing icing. A Multiplex 3 or 4-knob control panel enables manual or
automatic setting of the climate parameters in the bus. External temp. meter installed and optional interior temp. meter. Convector
heating:
Output………………………………………551W/m
Weight……………………………………….3.1kg/m
Blower heating for driver’s area, door1,
pram area and door2: data per blower
Output ………………………………………..2.8 kW
Air flow …………………………………..156 m3/h
Weight …………………………………………2.7 kg
Total power output from convektors and
blowers……..2.1 to 3.4kW depending on spec.
Additional heater heats the passenger compartment, defrosts the windscreen and preheats the engine. Available 7-day timer for programming the heater.
Additional heater capacity……………30 kW
Defroster:
Air flow, min/max ….446 m3/h / 731 m3/h
Heat output, min/max ………..7 kW/15 kW
Air Conditioning system for cooling and heating the passengers compartment.
AC type ……………..Sutrak 136 type II or III
Cooling capacity type II …………..29,3 kW
Cooling capacity type III ………….33,7 kW
Heating capacity, type II/III…….42/46 kW
Weight, type II / III ……………165 / 210 kg
Roof mounted driver’ss AC unit …..3,5 kW

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VOLVO 7900 CNG 300x82 7900 VOVO Specs Handbrake, Streering Gear,Brake System, AC System
VOLVO 7900 CNG LHD 300x88 7900 VOVO Specs Handbrake, Streering Gear,Brake System, AC System

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Volvo 7900 Hybrid Exterior and Door System

hybrid1 258x300 Volvo 7900 Hybrid Exterior and Door System
Air tanks standard Volvo 7900 Hybrid
– Primary…………..1x25dm3 + 2×30 dm3 (l)
– Front circuit…………………………..30 dm3 (l)
– Rear circuit……………………………30 dm3 (l)
– Park circuit…………………………….15 dm3 (l)
– Purge tank……………………………….6 dm3 (l)
Compressed air system can easily be fi lled from external circuit. Handbrake
Air operated spring brake acting directly on the drive axle wheels. Application is infi nitely variable by means of a control on the fascia.
Glazing Volvo 7900 Hybrid  
Glued one-piece panoramic wind screen, clear or green tinted, side windows with single or double glazing tinted, rear window with single glazing tinted only. All other glazing, bronze tinted aprt from drivers window which is clear only. Driver’s side double glazed window manually operated; without electric heating or single glazing with heating. Available 4 or all hopper windows (in total 8 for 2+2+2 or 9 for 2+2+0 door layout).
Exterior Volvo 7900 Hybrid 
Front and rear walls made from fi bre glass and ABS elements. External side panelling are made of a single sheet of aluminium under the window line combined with glass fi bre plates and is fi nished of with a aluminum lower skirt for the sides. Hatches are made of the same glass fibre panelling. Wheel arches of DCPD. Roof made of 1 mm thick single-piece aluminium sheet, glued to the roof frame. Mekra or Wilke external mirrors. Electrically adjusted, heated or not. 3-piece bumpers. Top hinged service compartment hatches with snap or cylinder locks. Mounted outside wide angle mirror on the RHS, fl agholder. Available: school bus equipment, warning signalization when front hatch open, head lamp cleaner, exit light above door2, high rear direction indicator. 1 or 2 roof hatches, electrically or manually operated; with emergency exit mechanisms.
Doors and Door System Volvo 7900 Hybrid 
ISAF double doors inward gliding on all positions pneumatically powered with single bronze tinted glazing. Door operation available in a range of combinations. Control via button/joystick or both with various safety function combinations for door operation available. Can be fi tted with 8 mm square male or key cylinder locks for door1 locked from inside or outside. Door confi gurations ………2+2+2; 2+2+0
Door buttons for driver right hand operated. External emergency valves at all doors. Mechanical or electrical access ramp at second door.

Ventilation and Heating and AC Systems

Water heating system with 2-pipe convectors and blower heating for driver’s
area, door1, pram area and door2 if fitted. Roof air conditioning units with heating + cooling. Driver’s cabin has convector or blower heating and can have own AC system. Door1 entrance can be heated by electrical mats in floor, preventing icing. A Multiplex 3-knob control panel enables automatic setting of the climate parameters in the bus. External temp. meter installed and optional interior temp. meter. Convector heating :
Output………………………………………551W/m
Weight……………………………………….3.1kg/m
Blower heating for driver’s area, door1, pram area and door2:
data per blower
Output ………………………………………..2.8 kW
Air fl ow …………………………………..156 m3/h
Weight ………………………………………….2.7 kg
Total power output from convektors and blowers………..2.1 to 3.4kW depending on spec
Additional heater heats the passenger
compartment, defrosts the windscreen and
preheats the engine. Available 7-day timer
for programming the heater.

Additional heater capacity……………30 kW
Fuel consumption ………………………4,0kg/h
Additional heater fuel tank………………….40l
Defroster:
Air flow, min/max ….446 m3/h / 731 m3/h
Heat output, min/max ………..7 kW/15 kW
Air Conditioning system for cooling and heating the passengers compartment:
Spheros Citysphere AC units (2 pcs,equivalent with conventional 24kW system).Semi-hermetic compressor, gearless drive by electric motor (engine rev independent). Constant maximal refrigerating capacity, air distribution direct into passenger’s compartment through outblow duct.
Roof mounted driver’s AC unit …..3,5 kW
Vehicle Structure
The body is based on the patented Volvo Bus concept, where an aluminium alloy providing superior corrosion resistance is used. The structure is made of extruded aluminium profile. Chassis floor structure built-up by steel RHS-profi les, welded together with open c-profile cross-members. The combined aluminium and steel frame combines good stability with low weight and gives long service life and increased loading capabilities. Rigidity provides good stability and driving.

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