2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
The NefAZ-5299 bus is one of the most popular types of municipal transport in Russia. The contemporary of the new century, born at the Neftekamsk Automobile Plant, during its still short life, it has sold more than ten thousand copies throughout the car parks of the entire large country.
Description of the bus
Indicative for assessing the reliability and driving characteristics of the NefAZ-5299 bus is that it is based on the chassis of a time-tested, road and off-road cargo serial KamAZ-5297. Tubeless wheels with steel rims, all-metal body with square tube stiffening ribs, dual-circuit pneumatic brake system, control and monitoring equipment that meets international standards, power steering - nothing new, but strong and safe.
The bus is equipped with anti-lock brakes as standard.
The driver's cabin is separated from the passenger compartmentnoise-proof glass partition and equipped with a loudspeaker. The set of adjustments and suspension of the driver's seat are not as modern as we would like, but they allow you to get comfortable behind the wheel.
Entrance doors open from the cab with pneumatic mechanisms.
Ventilation is natural, through sunroofs (there are three of them in the city bus) and side window vents.
Heat from an autonomous liquid or gas heater, which is also an engine preheater, is distributed evenly throughout the cabin, because the elements of the system are located along the perimeter of the bus.
The number of seats and the total cabin capacity depend on the modification of the NefAZ-5299 bus.
Specifications of the bus
The overall dimensions of the base model are 11700 × 2500 × 3100 mm. The wheelbase is 5840 mm. The curb weight of the bus is more than ten, and the total weight is eighteen tons. The load is unevenly distributed along the axles: 6.5 tons on the front and 11.5 tons on the rear.
The ground clearance is 285 mm, the minimum turning radius is 12 meters.
The maximum speed of the urban base bus with a diesel engine is 74 km/h. Suburbans accelerate to 96 km / h, and speeds higher than this on most Russian roads are not required.
Bus engines
NefAZ-5299 is equipped with several types of engines running on different types of fuel.
Diesel poweredfuel is powered by a Cummins 6ISBe270B engine with a capacity of 270 hp. With. and a volume of 6.7 liters. The six-cylinder engine is turbocharged. Fuel consumption is 24 liters per 100 km, the volume of the fuel tank is 250 liters. The diesel engine complies with EURO-3 environmental standards. The gearbox can be either manual or four-speed automatic.
Modifications that run on natural gas comply with higher environmental standards EURO-4 and EURO-5.
The eight-cylinder KamAZ-820.61-260 engine with a capacity of 260 hp runs on liquefied gas. With. 11.76L turbocharged.
The six-cylinder Mercedes-Benz M 906 LAG/EEV/1 engine is slightly more powerful - 280 hp. With. with a smaller volume of 6.9 thousand liters.
Yuchai YC6G260N-50 six-cylinder 7.8L engine produces a maximum output of 247 hp. s.
The volume of the gas cylinder system of eight containers is 984 liters. Cylinders for liquefied gas are located on the roof of the NefAZ-5299 bus (photo below).
City cars are equipped with a four-speed automatic, while suburban cars are equipped with a five-speed four-synchromesh manual transmission.
Bus modifications
The popularity of the NefAZ-5299 bus is evidenced by a large number of modifications: there have been forty-two of them since the start of production.
The basic model is designed for passenger transportation within the city. The total capacity is 105 people, there can be 25 seats. This bus has three wide doors, in the configurationthe engine can be either diesel or gas-powered, almost all modifications have an automatic transmission.
In addition to the fact that most modifications of the city bus are low-floor, they are also equipped with a forced body tilt system.
Suburban modifications have a smaller capacity - 89 people, but they are equipped with more comfortable tourist seats adapted for long trips.
Intercity NefAZ-5299 with one door has 43 seats and is equipped with luggage compartments. Comfortable car seats with reclining backs and armrests, air conditioning and radio make long trips not so tiring. A modification for long-distance transportation in the north is produced separately. It has additional interior and battery heaters, electric heating of the fuel intake, a tank for heating the fuel before starting.
If suburban modifications are all medium-floor, then city buses are also made in semi-low-floor and low-floor versions with ramps for passengers with disabilities and a special place in the center of the cabin for a wheelchair.
Maintenance and repair of the bus
Most of the components and assemblies of the NefAZ-5299 model have been tested on serial trucks, are well known to specialists, so their repair and maintenance do not cause problems.
The high degree of unification not only reduced the cost of assembling buses, but also simplified and made repairs cheaper. Buyspare parts are available from official KamAZ dealers, and their network is quite extensive.
Ride on the shuttle bus
Suburban NefAZ-5299 is designed for 45 seats, and almost the same number of passengers can stand. It has two doors located in opposite parts of the body, which makes the passage uncomfortably long. And given that the seats with armrests are wide enough, the aisle can also be considered narrow, where it is difficult for two passengers, especially in warm clothes, to miss each other.
Besides, in suburban buses, people, as a rule, travel with shopping bags, which in the NefAZ-5299 model simply have nowhere to go. The seats are close enough to accommodate the legs, and the overhead shelves are narrow. The luggage compartment in the bus is provided, but the practical use of it is very doubtful. It can be used by passengers traveling from the beginning to the end of the route, at intermediate stops the driver does not get out to open and close the cover again.
What is convenient for passengers are large doorways that are well lit at night, and low-lying steps - modifications of suburban buses are all medium-floor.
The characteristics of the NefAZ-5299 bus make it very popular throughout the Russian Federation.
Thoughtful design, equipment for the disabled in many modifications, air conditioners are comfortable for passengers, Good visibility, modern electronics and a fairly comfortable seat are advantages for drivers.
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