Technology
Diesel Engines Explained
Explore the diesel engine, a powerful internal combustion system that ignites fuel by compression, powering much of our world's transport and industry.
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What is it?
A diesel engine is an internal combustion engine that uses the heat of compressed air to ignite fuel injected into the combustion chamber. Unlike a gasoline engine which uses a spark plug for ignition, a diesel engine relies solely on high compression to create the heat needed for combustion. Invented by Rudolf Diesel in the 1890s, this process, known as compression ignition, makes diesel engines highly efficient and produces significant torque, which is the rotational force that gets a vehicle moving.
Why is it trending?
Diesel engines remain a cornerstone of the global economy. They are trending due to their unparalleled efficiency and power in heavy-duty applications. The vast majority of trucks, trains, ships, and construction equipment rely on diesel power to move goods and build infrastructure. Additionally, advancements in 'clean diesel' technology, including advanced filters and additives like Diesel Exhaust Fluid (DEF), are a hot topic as manufacturers work to meet increasingly strict emissions regulations around the world, keeping the technology relevant in a changing environmental landscape.
How does it affect people?
Diesel engines profoundly affect daily life by powering the supply chain that delivers food, fuel, and consumer goods. Their fuel efficiency translates to lower transportation costs. However, they also impact public health and the environment. Older diesel engines are a significant source of nitrogen oxides (NOx) and particulate matter, which contribute to smog and respiratory issues. This has driven governments to implement stricter emissions standards, pushing consumers towards gasoline or electric vehicles for personal transport while spurring innovation for cleaner industrial diesel applications.