2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
City bus LiAZ-5293 is a low-floor type of public transport with increased capacity. The machine is used in large cities where there is an intense flow of passengers. LiAZ-5293 has been produced since 2006 at the Likinsky plant. The technical indicators of the bus meet the relevant standards. Different models are equipped with several variations of domestic and imported power units.
Used motors
For the first 4 years of production, the bus in question was equipped with a Caterpillar diesel engine on 6 cylinders. Its power is 350 horses, volume is 7 liters. Fuel consumption in the combined cycle is about 30 liters per hundred kilometers. Automatic transmission is used, the maximum speed is 90 km / h. The power unit complies with the Euro 3 standard.
The next modification of the engine called Cummins 6ISBE had a more advanced design, turbocharging and improved environmental performance. Top speed remained the same, but fuel consumption dropped to 23 l/100 km. Soon a variation of the engine on gas appeared, with a power of 252 horses and a volume of 8.2 liters.
The last variation thatinstalled on LiAZ-5293 - this is a YaMZ engine of 240 horsepower. The rotational speed was 2,300 rpm, the working volume was 6.5 liters. The power unit complies with Euro 4, is equipped with an automatic transmission, consumes about 27 liters of diesel fuel per 100 km.
Interior equipment
The cabin is ventilated in two ways: naturally through the side windows and forcibly with ceiling fans. The heating system operates on the heat received from the operation of the power unit. There is also an autonomous liquid-type heater. Thanks to this design, the LiAZ-5293 bus is evenly completely heated. The cooling system, in turn, provides comfortable conditions for passengers in the summer.
The driver's seat is fenced off from the passenger compartment with a soundproof partition, which allows the driver to better concentrate on driving. A loudspeaker is provided in the cab to announce stops and other information. The bus in question has a high margin of safety, which allows you not to spend a lot of resources on maintenance and repair. The estimated life of the body is 12 years, and the internal systems can easily withstand hundreds of thousands of kilometers.
Main parameters
Beautiful appearance and rich "stuffing" has LiAZ-5293. Specifications and dimensions are shown in the table.
Wheelformula | 42 |
Length/width/height (m) | 11, 4/2, 5/3, 06 |
Base (m) | 5, 84 |
Type and number of doors | Three pneumatic folding |
Parking brake | Battery driven |
Main braking system | Double-circuit pneumatic unit with axial separation |
Fuel tank capacity (L) | 230 |
Number of seats (total) | 100 |
The transmission and power system are shown in the following table.
Fuel injection | Immediate |
Transmission | Hydromechanical |
Front suspension | Dependent pneumatics on a pair of elastic elements with two telescopic shock absorbers |
Rear suspension | Dependent type on a pair of lower longitudinal and two upper diagonal levers. Equipped with pneumatics and four hydraulic telescopic shock absorbers |
Steering | Drive with hydraulic booster (steering wheel of the "screw-ball-nut-rail-sector" system) |
Checkpoint | Automatic with 4 or 5 steps |
Exhaust system | One muffler without neutralization unit |
Air filter | Dry, two stage version |
Other features
The following table contains additional parameters specific to transport (LiAZ-5293).
Body paint | The main color is white, the bottom border is green |
Door arrangement | Electrically controlled elements on pneumatics in the amount of 3 pieces |
Windows | Single panes encased in rubber profiles |
Passenger seats | Plastic with fabric insert, separate, anti-vandalism |
Driver's seat | Equipped with air suspension |
Lighting | Combination headlights, vertical rear lights, foglights |
Heating system | Heating unit from the engine plus auxiliary heater of liquid type |
Rearview mirrors | 3 pieces, mounted on heated brackets |
Seat belts | Driver |
Interior | The driver's compartment is separated by a partition, there is a window for paying the fare, a sun blind, emergency opening of the doors is possible, |
Audio | There is a speakerphone, speakers |
Package | First aid kit, jack, spare tire, tool kit |
Flaws
Despite certain advantages, the LiAZ-5293 car has some flaws that have passed from its predecessors. The realities of operation show that the ACS system is located inefficiently and eats up part of the usable space. The standard dimensions of the body remained from the previous model, which did not contribute to a significant improvement in passenger comfort.
In addition, the driver's door lock (LiAZ-5293) often freezes after parking on the street. The work of the suspension is not entirely satisfactory, the kneeling system of which often does not adequately respond to the tilt of the bus towards the sidewalk to reduce the seating height. The build quality leaves much to be desired, as well as the incompletely thought-out door opening system.
Features
It is worth noting that the LiAZ-5293, the photo of which is presented below, has become a kind of intermediate link in the development of truly efficient city buses. The first version of this modification was released in 2006 by the Likinsky Bus Plant. The starting large batch of cars (100 pieces) was ordered by the Nizhny Novgorod passenger autotrans.
The buses in question are operated everywhere in large cities of Russia. In Moscow, they operate in 11 bus depots, equipped with an environmentally friendly engine with a gas installation. The lowered floor of the vehicle (height on the road - 3.4 cm) and wide doorways provide quick boarding and disembarkation of passengers, which reduces the car's stay on the route.
Conclusion
It can be concluded that LiAZ-5293 is a definite breakthrough in the construction and design of low-floor city buses. I am pleased with the renovation of the interior, well-developed ventilation and heating system. The exterior is also quite decent, there are several color schemes. Fuel complies with environmental standards.
However, there are a number of questions regarding the flaws in the chassis, in particular the suspension, the door opening system and the well-thought-out layout of the internal equipment, for the car in question. I would like to believe that the developers will not stop there, but will take constructive steps to improve driving performance and passenger comfort. At least, there are all the prerequisites for this, which show that design developments are aimed at the comprehensive improvement of city buses.
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