In diesel engines, fuel is injected during the compression stroke before the piston reaches top dead centre (TDC). Only the air is compressed on the compression stroke which causes it to become hot enough to ignite the fuel. In a mechanical system, the fuel charge is accurately metered and pressurised by the fuel injection pump and passed to
An EGR is a valve within a diesel engine thatās used to control the volume of nitrogen oxide (NOx) emissions released through the exhaust. NOx is among the most toxic emissions produced during the diesel combustion cycle, so itās critical to reduce its occurrence in exhaust fumes by as great a margin as possible.
This isnāt always possible or economically viable, however, which is why diesel electric trains also exist. Where power lines arenāt a possibility, generating power for the electric motors using a diesel engine is particularly efficient, providing a host of advantages that solutions such as batteries canāt match.
The concept of biofuels is surprisingly old. Rudolf Diesel, whose invention now bears his name, had envisioned vegetable oil as a fuel source for his engine. In fact, much of his early work revolved around the use of biofuel. In 1900, for example, at the World Exhibition in Paris, France, Diesel demonstrated his engine by running it on peanut
The mechanical fly-weight governors of inline and distributor diesel fuel injection pumps used to control fuel delivery in diesel engines under a variety of engine loads and conditions could no longer deal with the ever-increasing demands for efficiency, emission control, power and fuel consumption. These demands are now primarily fulfilled by
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