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DPKr-3 Diesel Multiple Unit
DPKr-3 (''Dizel-Pоizd Kryukovsky, Type 3'') is a Ukrainian diesel-powered regional train manufactured by the Kryukiv Railway Car Building Works. The first unit, built in 2019, ran between Kyiv and Boryspil Airport on the Kyiv-Boryspil Express airport rail link until September 2020, after which it became an express service on the Smila - Cherkasy line. The second and third unit was built in 2021 and commissioned in October. The fourth is going through testing since the 12 of November. Technical characteristics Engine The regional diesel train DPKr-3, like its predecessor, the DPKr-2, has three cars. The cars on either end are motorized, containing 588 kW engines. The main motor cars are equipped with a modular diesel-hydraulic Voith RailPack 600 DH engine, located in the cars' underbody space. It consists of a jointly-developed Voith V2862T3, a MAN Truck & Bus engine for use on diesel train cars, and Voith T212bre hydrodynamic transmission, as well as an elec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transmission (mechanics)
Propulsion transmission is the mode of transmitting and controlling propulsion power of a machine. The term ''transmission'' properly refers to the whole drivetrain, including clutch, gearbox, prop shaft (for rear-wheel drive vehicles), differential, and final drive shafts. In the United States the term is sometimes used in casual speech to refer more specifically to the gearbox alone, and detailed usage differs. The transmission reduces the higher engine speed to the slower wheel speed, increasing torque in the process. Transmissions are also used on pedal bicycles, fixed machines, and where different rotational speeds and torques are adapted. Often, a transmission has multiple gear ratios (or simply "gears") with the ability to switch between them as the speed varies. This switching may be done manually (by the operator) or automatically (by a control unit). Directional (forward and reverse) control may also be provided. Single-ratio transmissions also exist, which simply cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
COVID-19 Pandemic
The COVID-19 pandemic, also known as the coronavirus pandemic, is an ongoing global pandemic of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The novel virus was first identified in an outbreak in the Chinese city of Wuhan in December 2019. Attempts to contain it there failed, allowing the virus to spread to other areas of Asia and later worldwide. The World Health Organization (WHO) declared the outbreak a public health emergency of international concern on 30 January 2020, and a pandemic on 11 March 2020. As of , the pandemic had caused more than cases and confirmed deaths, making it one of the deadliest in history. COVID-19 symptoms range from undetectable to deadly, but most commonly include fever, dry cough, and fatigue. Severe illness is more likely in elderly patients and those with certain underlying medical conditions. COVID-19 transmits when people breathe in air contaminated by droplets and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ternopil
Ternópil ( uk, Тернопіль, Ternopil' ; pl, Tarnopol; yi, טאַרנאָפּל, Tarnopl, or ; he, טארנופול (טַרְנוֹפּוֹל), Tarnopol; german: Tarnopol) is a city in the west of Ukraine. Administratively, Ternopil serves as the administrative centre of Ternopil Oblast and has the status of city of oblast significance. Located on the banks of the Seret (river), Seret. Until 1944, it was known mostly as Tarnopol. Ternopil is one of the major cities of Western Ukraine and the historical regions of Galicia (Central Europe), Galicia and Podolia. It is served by Ternopil Airport. The population of Ternópil was estimated at . Administrative status The city is the administrative center of Ternopil Oblast (Oblasts of Ukraine, region), as well as of surrounding Ternopil Raion (Raions of Ukraine, district) within the oblast. It hosts the administration of Ternopil urban hromada, one of the hromadas of Ukraine. Demography According to Ukrainian Census (200 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passenger Train Toilet
Many passenger trains (usually medium and long-distance) have toilet facilities, often at the ends of carriages. Toilets suitable for wheelchair users are larger, and hence trains with such facilities may not have toilets in each carriage. Hopper toilet The traditional method of disposing human waste from trains is to deposit the waste onto the tracks or, more often, onto nearby ground using what is known as a hopper toilet. This ranges from a hole in the floor to a full-flush system (possibly with sterilization). The hole in the floor (also known as a drop chute toilet or direct flush toilet) system is still in use in many parts of the world, particularly on older rolling stock. The principal disadvantage is that it can be considered crude or unhygienic and dangerous to health and the environment – it litters the railway lines and can convey serious health risks when the train passes over or under a navigable waterway. Passengers may be discouraged from flushing or using toil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Class Travel
First class is the most luxurious and most expensive travel class of seats and service on a train, passenger ship, airplane, bus, or other system of transport. Compared to business class and economy class, it offers the best service and most comfortable accommodation. Aviation The First class (aviation), first-class section of a fixed-wing jet airliner is typically toward the front of the aircraft. Many airlines have removed first class altogether from their international flights, offering business class as their highest level of international service. First class passengers are usually allowed into Airport lounge, lounges at airports while they wait for their flights. Railways While first-class travel accommodation is common in intercity public transport rail services, they have become increasingly prevalent for commuters' short-distance daily travel, especially in rapid transit contexts, rather than longer-distance regional rail. Australia Australia has internal rail opera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Economy Class
Economy class, also called third class, coach class, steerage, or to distinguish it from the slightly more expensive premium economy class, standard economy class or budget economy class, is the lowest travel class of seating in air travel, rail travel, and sometimes ferry or maritime travel. Historically, this travel class has been called tourist class or third class on ocean liners. Marine Travel classes originated from a distinction between "cabin class" and "steerage" on sailing vessels in the 18th century. Cabin class, for wealthier passengers included small cabins and a shared dining room while "steerage" provided open decks with bunks often near the tackle to operate the Steer rudder in converted cargo space on the "between decks" area where passengers from poorer backgrounds cooked their own meals. With the arrival of steamships, competition between ocean liner companies led some companies like the Inman Line to offer additional options to economy passengers seeking to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalytic Converter
A catalytic converter is an exhaust emission control device that converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction. Catalytic converters are usually used with internal combustion engines fueled by gasoline or diesel, including lean-burn engines, and sometimes on kerosene heaters and stoves. The first widespread introduction of catalytic converters was in the United States automobile market. To comply with the U.S. Environmental Protection Agency's stricter regulation of exhaust emissions, most gasoline-powered vehicles starting with the 1975 model year are equipped with catalytic converters. These "two-way" converters combine oxygen with carbon monoxide (CO) and unburned hydrocarbons (HC) to produce carbon dioxide (CO2) and water (H2O). Although two-way converters on gasoline engines were rendered obsolete in 1981 by "three-way" converters that also reduce oxides of nitrogen (); they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
V12 Engine
A V12 engine is a twelve-cylinder piston engine where two banks of six cylinders are arranged in a V configuration around a common crankshaft. V12 engines are more common than V10 engines. However, they are less common than V8 engines. The first V12 engine was built in 1904 for use in racing boats. Due to the balanced nature of the engine and the smooth delivery of power, V12 engines were found in early luxury automobiles, boats, aircraft, and tanks. Aircraft V12 engines reached their apogee during World War II, following which they were mostly replaced by jet engines. In Formula One racing, V12 engines were common during the late 1960s and early 1990s. Applications of V12 engines in the 21st century have been as marine engines, in railway locomotives, as large stationary power as well as in some European sports and luxury cars. Design Balance and smoothness Each bank of a V12 engine essentially functions as a straight-six engine, which by itself has perfect primary and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Four-stroke Engine
A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: #Intake: Also known as induction or suction. This stroke of the piston begins at top dead center (T.D.C.) and ends at bottom dead center (B.D.C.). In this stroke the intake valve must be in the open position while the piston pulls an air-fuel mixture into the cylinder by producing vacuum pressure into the cylinder through its downward motion. The piston is moving down as air is being sucked in by the downward motion against the piston. #Compression: This stroke begins at B.D.C, or just at the end of the suction stroke, and ends at T.D.C. In this stroke the piston compresses the air-fuel mixture in preparation for ignition during the power stroke (below). Both the intake and exhaust valves are close ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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