The Diesel Hybrid Combustion Engine
Two main types of engines powering everyday machinery are diesel and gasoline internal combustion engines. Both vary on efficiency levels, but are still effective. Diesel engines have high efficiency levels, such as producing great amount of torque at very low rpms. They are also known for their fuel-efficient behavior and capability to produce low emissions.
Their capability to produce power at an efficient rate with little wear on the engine, this makes these engines ideal for hybrid integration. Hybrid integration takes a typical engine and combines it with an electric generator and motor, with the application of other electrical systems applied. Allowing the
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These tests represent the percentage of green house gases that the engine will produce over its lifetime. The results are as follows: the gasoline combustion engine is 88%, the diesel-hybrid engine is 56% (Weiss 29).
The MIT testing and research went into much more detail besides fuel efficiency and emission release. These areas are still are very important in the mind of the everyday consumer.
Current Developments:
The diesel-hybrid idea is now being applied to several different applications. It ranges from road, to water, and railroad. In each scenario the applications are the similar but the designs are different.
In Vancouver, Canada, RailPower Technologies has designed a hybrid locomotive, the Green Goat, which utilizes diesel fuel and electric motors. The basic design started with removing all the original engine parts and replacing them with a 6.0L Daewoo diesel engine and 20 volt lead acid batteries (Siuru 1). This design uses the diesel engine, which acts as a generator to charge the batteries. The batteries are then used to power the locomotive. Batteries propel the locomotive leaving more empty space under the hood. The result of all this is: ability to create a smaller hood increasing overall visibility for locomotive engineers, fuel economy improvement of 35%, and a 90% reduction of overall emissions (Siuru 1).
In 2001, New York City
Gas engines are mainly used by the individual in personal vehicles whereas diesels are very popular in the commercial and industrial fields. Diesel engines are used by the navy in their ships and by the army in their tanks and big trucks. Some of the main reasons for choosing this engine are
The author first explains what a hybrid is, stating “A hybrid is a cross between two established varieties of plant, animal… or technology.” She introduces the hybrid vehicle, a new form of technology that stands as a possible answer for a vehicle that is both energy preserving and safer for the environment. Before she dives into details of how the vehicle works, she enlightens the reader on what the article is about and the objective of the hybrid vehicle. Students enrolling in an engineering course in a post-secondary institution will be more
1. Have you ever wondered how the things you buy get delivered to the stores? Semis, planes, trains, and sometimes boats. The majority of them run on diesel, because diesel is more efficient than a gasoline engine. With the number of diesels on the road everyday there is a high demand for mechanics that are properly trained to work on them. You have to be able to leave home on a moment’s notice to travel and repair trucks on the road. Being a diesel mechanic is very stressful and you never know what you will be working on day to day.
First of all, hybrids produce 0% emissions from the tailpipe, while a car that uses gasoline produces tons of
B. Series hybrid’s only have electric motors to provide propulsion while maintaining an exceptionally high power to weight ratio providing enough torque over a broad range of speeds.
The diesel and gasoline engine changed the world as we know today. Without these two types of engine the world would still be in the horse and buggy times as far as transportation goes. These engines set a whole new bar for the standards of getting to work and the moving and manufacturing of products.
The article “The Gas-Electric Hybrid Demystified” by Sara R. Howerth, gives the reader some insight on the new developed technology of hybrid cars. The author uses the difference between four engine models; Gas-Engine, Battery Powered Electric, Hybrid model #1 and Hybrid model #2 – to show just how far technology has come and to say that this is only just the beginning. The engine will keep evolving as long as our natural resources continue to diminish and our need for them increases.
Gas engines versus diesel engines has got to be one of the biggest controversial topics in the automotive world. People have been arguing which is better for years upon years, and it is time to finally come to a conclusion. Anyone can probably notice that in almost every family there is a certain vehicle preference based off of the engine that runs them, but the term vehicle is extremely broad. To be more specific, especially in the southern part of the United States, those families have specific truck engines that they prefer. Either a person drives a truck for work or they drive a truck because they love them. Either way, nearly everyone in most of the United States has at least one truck in their family because they are just simply work horses. It’s also a huge part of the culture in the south to have a truck. Just about every boy and even a lot of girls want their first vehicle to be a truck. A pickup is one of the most reliable tools someone can own. Nearly every pickup enthusiast or working individual needs a gas or diesel truck, and the better choice is a diesel truck.
First, the weight of diesel engines are on average is 1,100 pounds. The engine has to be built stronger, because the compression ratio is a lot higher. As it runs, the pistons compress air to an extreme heat, and as it reaches top dead center, the fuel is injected into the combustion chamber. The fuel being injected directly in the hot air results in a highly destructive explosion that drives the piston down creating power. In addition, it makes the iconic diesel knock sound. Gas engines are built weaker because the compression ratio is lower. If a gas engine had the same compression ratio as a diesel, it would not even start to run because it would blow up at idle. The gasoline engine has spark plugs that ignites the fuel. They don’t need to compress air to an extreme heat like the diesels do. As the pistons travel up, the air-fuel mixture is introduced into the combustion chamber. The air fuel mixture just sits there for a split second, and then the plug sparks and ignites the fuel. This is why the gasoline engines are lighter than diesel.
cleaner for everyone here on the earth by having less emissions than in 1896. It is a
The world we live in is surrounded by diesel engines. They are on the freeways, railways, airways, and are one of the leading electricity producers in the world. They are also becoming more popular in automobiles. These engines are efficient and reliable and they are getting very sophisticated. However, the physics behind these engines has not changed.
A number of hybrid vehicles have been built and tested since 1980. Some of these vehicles have impressed analysts with their performance and low levels of exhaust and petroleum consumption. Interest in hybrid vehicles jumped in late 1993 with the announcement of funding for
General Motors ' Chevrolet Volt is the world’s second production series hybrid-electric vehicle. It has both an electric traction motor and a gasoline engine. Its best feature is that once its 16 kilowatt-hour battery pack is drained, the 1.4 liter 4 cylinder engine switches on. When this happens it does not drive the wheels mechanically like other hybrids, instead it turns a 55 kilowatt generator that provides current to the 111 kilowatt electric motor and powers the front wheels (Voelcker, 2011). According to Fletcher (2011), this is the way diesel locomotives work, but until the Chevy Volt all hybrid cars had used their gasoline engines in parallel with their electric motors to turn the wheels. In this vehicle, the gasoline tank and combustion engine act as backup battery.
In the application of Diesel propulsion system, it has advantages and disadvantages. The advantages are diesel propulsion is wellknown and wellunderstood and it is a dependable method of propulsion and supporting power. Engineers can easily operate the system and the training is familiar for them. Spare part and repairmen are available world wide. Diesel fuel also easy to obtain. Research and development to deal with primary and secondary method to reduce emission are being carried as a continuous programme. The disadvantages of this system are the diesel engines create
Road transportation providers have adopted several innovations that have lowered the environmental impact of this transportation mode. The adoption of clean diesel technology by the industry has resulted in significant reductions in fuel use and emissions by trucks. This innovation in diesel engine