In CI engines, the injector is used for injecting fuel in highly compressed air. On the other hand, spark plug is used in spark ignition (SI) engines to ignite the air fuel mixture.
Which of the following is used in CI engines?
ICEs are typically powered by fossil fuels like natural gas or petroleum products such as gasoline, diesel fuel or fuel oil. Renewable fuels like biodiesel are used in compression ignition (CI) engines and bioethanol or ETBE (ethyl tert-butyl ether) produced from bioethanol in spark ignition (SI) engines.
Which medium is used in CI engine?
The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to the mechanical compression; thus, the diesel engine is a so-called compression-ignition engine (CI engine).
Which is not used in CI engine?
Explanation: Methanol is not used in CI engines because of its high octane number and low cetane number. Pure methanol and gasoline in various percentages have been extensively tested in engines and vehicles for a number of years.
Is fuel pump used in CI engine?
The injection pump sends fuel under pressure to the nozzle pipes which carry fuel to the injector nozzles located in each cylinder head. Excess fuel goes back to the fuel tank. CI engines are operated unthrottled, with engine speed and power controlled by the amount of fuel injected during each cycle.
Which cycle is more efficient?
Explanation: Otto cycle is more efficient than Diesel cycle for a given compression ratio. 6. For constant maximum pressure and heat input, the air standard efficiency of the gas power cycle is in the order.
What is a CI engine?
Definition of ‘CI engine’
A CI engine is an engine in which the fuel charge is ignited by the heat of compression. The process of combustion in the CI engine is fundamentally different from that in a spark-ignition engine. In a CI engine, air is let into the combustion chamber and compressed to a very high pressure.