95 percent of all school buses in America are powered by diesel engines because of their reliability, durability and safety. Over half of these (54 percent) rely on the cleanest, near-zero emission diesel engine technology.
What size engine do buses have?
Current London d/d buses are powered by a variety of engines such as the Cummins 6.7-litre 6BTA and the Volvo 7-litre engines, with diesel-electric (with battery) and the BYD battery-electric buses now entering service. Expect expansion of the battery-electric fleet with electric motors rated between 100-HP and 150-Hp.
Do school buses have two engines?
There are two typical school bus placements for the engine – “rear engine (RE)” or “front engine (FR).” When buying a school bus, the engine location is a primary factor to consider. A front engine has the center of the bus mostly occupied, but there is no block with a rear engine.
How many cylinders do busses have?
Diesel Bus Engine, 6 Horizontal Cylinder Configuration, Direct Injection. This cut-away is the engine of a diesel bus with 6-cylinder horizon configuration and direct injection.
What are the 3 types of buses?
Three types of bus are used.
- Address bus – carries memory addresses from the processor to other components such as primary storage and input/output devices. …
- Data bus – carries the data between the processor and other components. …
- Control bus – carries control signals from the processor to other components.
What is bus short for?
The History of Bus
The word bus is short for omnibus, which means “for everyone.” Bus was first used in this sense in the 1830s, its “everyone” meaning referencing the fact that anyone could join the coach along its route, unlike with stagecoaches, which had to be pre-booked.
What are the black stripes on school buses for?
Along with giving the school bus its unique look, they also serve a very important purpose. Those black stripes are there to help protect the children in the event of a collision. They are known as “rub rails” and they also stop a car that hits the side of the bus from harming the entire side of the vehicle.
How many miles can a diesel bus last?
On average, a clean-diesel school bus can travel about 510 miles on a tank of diesel vs. only 270 miles on gasoline, based on the same standard-sized fuel tanks. Newer engines, like the Detroit™ DD5™ and DD8™ diesel engines, show an additional three percent increase in fuel efficiency.
Do buses have Turbo?
Buses and trucks generally use a 6 cylinder in-line diesel engine and using a turbocharger can improve the thermal efficiency of the engine and also can control the emission level to an extent. Though old buses are not equipped with turbocharger the buses manufactured nowadays are fitted with a turbocharger.
How much horsepower does a bus have?
A typical intercity coach weighs about 12,000 kg (26,000 pounds), has a capacity of up to 47 passengers, a two-stroke-cycle V-8 diesel engine with up to 450 horsepower, an electronically controlled automatic transmission, and air brakes.