|The Direct Injection
Likely Power Your Next Car.
Automotive technology has seen so much advancement in recent years.
Engine wise, the traditional mechanical system has been replaced by the
more improved fuel injection system which does its work electronically.
This multi-point injection (MPI) system is popularly used today
although it still has limitations when it concerns fuel efficiency.
According to a recent article
in the Wall Street Journal, "Analysts say sales of vehicles with direct
fuel injection -- which deliver greater fuel economy and power than
today's similarly sized gas engines -- will far exceed those of hybrids
and electrics for years to come. Expect over 5 million by 2014!
an Existing Technology is Less Risky and Costs Less.
car makers have recognized
the stark reality that the environment is in bad shape and that the
widespread use of fossil fuel is one of the primary causes. This
reality is what prompted them to find ways to help in preserving the
environment and as gas prices have fallen, the talk has turned from
hybrid powertrains to direct injection engines.
The most promising, near-term technology utilized by the automotive
industry could turn out to be direct injection systems. This is an eco
friendly technology and one that is far more advanced than the MPI
because of its faster response time and higher combustion efficiency.
Additionally, it reduces fuel consumption and improves power output and
with cleaner emissions to boot.
Whereas the multi-point injection system still lacks the needed
efficiency because of the time it takes fuel and air to mix before
entering the cylinder, the gasoline engines that feature the direct
injection system injects gasoline directly into the cylinder or the
combustion chamber. This process is the same as that of the diesel
engines that have used a similar system for years.
Many of you may be unaware but the direct injection system has been in
existence since the World War II. Direct gasoline injection used for
the very first time on the so-called hesselman engine created by Jonas
Hesselman, an engineer from Sweden. The system was utilized on World
War II production aircrafts that featured the Soviet and German designs.
It was later in 1952 when the first direct injection system was used in
automotives courtesy of Goliath and Gutbrod after it was fully
developed by Bosch. Among the popular brand of cars, the Mercedez Benz
300 SL 1955 model became the first sports car to feature the direct
fuel injection type of engine. Today, many car manufacturers such as
Volkswagen, Audi, Mazda, BMW and General Motors are making automobiles
that carry the direct injection engines.
Simply Aren't As Sexy, Direct or In-Direct.
The two-stroke car engines are those that greatly benefit from the
direct injection system’s less emission. This makes it more
eco friendly as it does not cause much pollution to the environment.
Compared to the traditional model, the direct injection engine releases
air only from its crankcase while all the ports are closed. Two-stroke
engines utilize two types of gasoline direct injection systems
– the low pressure and the high pressure.
Direct injection engines promote efficient use of gasoline as well as
allow greater control, higher compression ratios and precision. This is
mainly due to the combustion of a very lean mixture when a car is in
operation and a cooling effect that takes place when fuel evaporates
inside the cylinder. Meanwhile, the concentration of fuel around the
spark plug area results in reduced fuel consumption in starting a cold
engine and less emission of harmful pollutants. With fuel being
injected directly into the cylinder, the after effect is the accurate
metering of fuel that leads to better transient control and reduced
Ford calls it's D.I.E. - EcoBoost, which delivers a 20% improvement in mpg ratings.
GM calls theirs HCCI and anticipates a 30% improvement.
Whatever they are called, look for one under your next car hood!
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