Why do 2 strokes have more power than 4 strokes?
Because combustion takes place with each revolution of the crankshaft with a 2-stroke, this format puts out more power than a 4-stroke engine and the power has more instantaneous delivery. This are some reasons why 2-stroke engines have a long history of use on many different types of motorcycles.
What is the difference between 2 stroke and 4 stroke engine?
In a 2-stroke engine, all five functions of the cycle are completed in only two strokes of the piston (or one revolution of the crankshaft). In a 4-stroke engine, the five functions require four strokes of the piston (or two revolutions of the crankshaft).
What are the advantages of a four-stroke engine?
More fuel efficiency :- 4 stroke engines have greater fuel efficiency than 2 stroke ones because fuel is consumed once every 4 strokes. Less pollution :- As power is generated once every 4 strokes & also as no oil or lubricant is added to the fuel; 4 stroke engine produces less pollution.
Where are 4 stroke engines used?
1:fuel injection, 2:ignition, 3:expansion(work is done), 4:exhaust. The four-stroke engine is the most common types of internal combustion engines and is used in various automobiles (that specifically use gasoline as fuel) like cars, trucks, and some motorbikes (many motorbikes use a two stroke engine).
How does four stroke engine works?
Four Stroke Cycle Engines. A four-stroke cycle engine is an internal combustion engine that utilizes four distinct piston strokes (intake, compression, power, and exhaust) to complete one operating cycle. The piston make two complete passes in the cylinder to complete one operating cycle.
What is a stroke in engines?
A phase of the engine’s cycle (e.g. compression stroke, exhaust stroke), during which the piston travels from top to bottom or vice versa. The type of power cycle used by a piston engine (e.g. two-stroke engine, four-stroke engine). The stroke length––along with bore diameter––determines the engine’s displacement.
What is the formula for compression RK ratio of the Otto cycle?
Explanation: This is the expression for efficiency of Otto cycle and rk=compression ratio=Vmax/Vmin.
When the spark is advanced the work output is less as?
Explanation: When the spark is advanced, the work output is less as additional work is required to compress the burning gas. Explanation: The major loss in a S.I. engine is due to variation in specific heat and chemical equilibrium while the major loss in a C.I. engine is loss due to incomplete combustion.
Is petrol engine an Otto cycle?
The Otto Cycle, describes how heat engines turn gasoline into motion. Like other thermodynamic cycles, this cycle turns chemical energy into thermal energy and then into motion. The Otto cycle describes how internal combustion engines (that use gasoline) work, like automobiles and lawn mowers.
What is the difference between the Brayton cycle and the Rankine Cycle?
Brayton cycle consists of two reversible isobaric processes and Rankine cycle consist of two reversible adiabatic processes. Brayton cycle operates between a higher pressure ratio than the Rankine cycle for the same capacity. …