Multum Użytecznych eInformacji

Automobile – „which oil to use?” and other questions


stop smoke oil

Hybrid - some facts about Environmental issue

The hybrid vehicle typically achieves greater fuel economy and lower emissions than conventional internal combustion engine vehicles (ICEVs), resulting in fewer emissions being generated. These savings are primarily achieved by three elements of a typical hybrid design:

Relying on both the engine and the electric motors for peak power needs, resulting in a smaller engine size more for average usage rather than peak power usage. A smaller engine can have less internal losses and lower weight.
Having significant battery storage capacity to store and reuse recaptured energy, especially in stop-and-go traffic typical of the city driving cycle.
Recapturing significant amounts of energy during braking that are normally wasted as heat. This regenerative braking reduces vehicle speed by converting some of its kinetic energy into electricity, depending upon the power rating of the motor/generator;
Other techniques that are not necessarily 'hybrid' features, but that are frequently found on hybrid vehicles include:

Using Atkinson cycle engines instead of Otto cycle engines for improved fuel economy.
Shutting down the engine during traffic stops or while coasting or during other idle periods.
Improving aerodynamics; (part of the reason that SUVs get such bad fuel economy is the drag on the car. A box shaped car or truck has to exert more force to move through the air causing more stress on the engine making it work harder). Improving the shape and aerodynamics of a car is a good way to help better the fuel economy and also improve vehicle handling at the same time.
Using low rolling resistance tires (tires were often made to give a quiet, smooth ride, high grip, etc., but efficiency was a lower priority). Tires cause mechanical drag, once again making the engine work harder, consuming more fuel. Hybrid cars may use special tires that are more inflated than regular tires and stiffer or by choice of carcass structure and rubber compound have lower rolling resistance while retaining acceptable grip, and so improving fuel economy whatever the power source.
Powering the a/c, power steering, and other auxiliary pumps electrically as and when needed; this reduces mechanical losses when compared with driving them continuously with traditional engine belts.
These features make a hybrid vehicle particularly efficient for city traffic where there are frequent stops, coasting and idling periods. In addition noise emissions are reduced, particularly at idling and low operating speeds, in comparison to conventional engine vehicles. For continuous high speed highway use these features are much less useful in reducing emissions.


Źródło: https://en.wikipedia.org/wiki/Hybrid_vehicle#Environmental_issues


Common cylinder configurations

Cylinder configuration

Common cylinder configurations include the straight or inline configuration, the more compact V configuration, and the wider but smoother flat or boxer configuration. Aircraft engines can also adopt a radial configuration, which allows more effective cooling. More unusual configurations such as the H, U, X, and W have also been used.

Multiple cylinder engines have their valve train and crankshaft configured so that pistons are at different parts of their cycle. It is desirable to have the piston's cycles uniformly spaced (this is called even firing) especially in forced induction engines; this reduces torque pulsations21 and makes inline engines with more than 3 cylinders statically balanced in its primary forces. However, some engine configurations require odd firing to achieve better balance than what is possible with even firing. For instance, a 4-stroke I2 engine has better balance when the angle between the crankpins is 180° because the pistons move in opposite directions and inertial forces partially cancel, but this gives an odd firing pattern where one cylinder fires 180° of crankshaft rotation after the other, then no cylinder fires for 540°. With an even firing pattern the pistons would move in unison and the associated forces would add.

Multiple crankshaft configurations do not necessarily need a cylinder head at all because they can instead have a piston at each end of the cylinder called an opposed piston design. Because fuel inlets and outlets are positioned at opposed ends of the cylinder, one can achieve uniflow scavenging, which, as in the four-stroke engine is efficient over a wide range of engine speeds. Thermal efficiency is improved because of a lack of cylinder heads. This design was used in the Junkers Jumo 205 diesel aircraft engine, using two crankshafts at either end of a single bank of cylinders, and most remarkably in the Napier Deltic diesel engines. These used three crankshafts to serve three banks of double-ended cylinders arranged in an equilateral triangle with the crankshafts at the corners. It was also used in single-bank locomotive engines, and is still used in marine propulsion engines and marine auxiliary generators.

Źródło: https://en.wikipedia.org/wiki/Internal_combustion_engine


The obligation to insure the car

Each driver must obtain the ambiguous insurance. As a result, in the event of a fault in our car accident or get compensation. This money, in many cases, are a really big contribution to the return to the previous state. What's more, we are the perpetrators of a road accident, our insurance makes wronged our people have the necessary money to carry out repairs. Insurance of each vehicle is actually mandatory. In case of detection by the police or other services of the current lack of insurance for the car, we can reckon with severe financial penalties. It is therefore aware of the periodic renewal of our insurance.


Zobacz inne ciekawe wpisy na naszej stronie:


Artykuł o emigracji, Polakach za granicą i przewozach osób

tanie przewozy podkarpacieAutokar kontra autobusAutokar (autobus turystyczny, autobus dalekobieżny) ? autobus przystosowany do przewozów pasażerskich na duże odległości, na trasach międzymiastowych i międzynarodowych. Według definicji Europejskiej Komisji Gospodarczej, Eurostatu i Międzynarodowego Forum Transportu jest to pasażerski mechaniczny pojazd drogowy przeznaczony do przewozu więcej niż 24 osób (wliczając kierowcę) i posiadający wyłącznie miejsca siedząceŹródło: ht...

Artykuł o wirtualnym biurze

biuro wirtualne w warszawieDla kogo wirtualne biuro to doskonała propozycja? Z roku na rok istnieje coraz większe zapotrzebowanie na usługi takie, jak wirtualne biuro. Dzięki tego typu usługom możemy pozbyć się uciążliwych zadań takich, jak obsługa korespondencji i tym podobne. Wirtualne biuro to bardzo dobra opcja na start, dla przedsiębiorców dopiero wchodzących na rynek w swojej branży. Taka działalność pozwala bowiem na oszczędzenie znacznych środków, które następnie ...

Czysty dywan

pranie kanap wrocławSprzątaj regularnieNie da się ukryć tego, że bez regularnego sprzątania do naszego domu wkradnie się tak przecież niepożądany chaos, a my możemy zyskać opinię osoby, która nie panuje nad swoimi wnętrzami. Z tego powodu zwyczajnie wypada zadbać o czystość i pamiętać o tym, że przynajmniej raz w tygodniu dobrze byłoby zająć się naszymi pokojami.Możemy też zatrudnić do tego kogoś z zewnątrz, jeżeli nie dysponujemy odpowiednią do tego celu ilości...

Energia odnawialna, kolektory słoneczne - zastosowanie i porady

inwerter abb Montaż instalacji słonecznych Instalacje słoneczne zazwyczaj montują specjalne firmy, mające odpowiednie doświadczenie w tej branży. Chociaż podobno da się zbudować samodzielnie panel słoneczny, to jednak tylko wtedy, gdy korzystamy z pomocy profesjonalistów możemy być pewni, że taka instalacja działa w sposób sprawny i bezpieczny. Fotowoltaika i kolektory słoneczne to niewątpliwie energia przyszłości i trzeba przyznać, że w tej branży istnieje spore pole do...