How to keep the engine in good condition? Premium oil

es, and insurance,5 are weighed against the cost of the alternatives, and the value of the benefits ? perceived and real ? of vehicle usage. The benefits may include on-demand transportation, mobility, independence and convenience

How to keep the engine in good condition? Premium oil best oil for TVR

Cars - Costs and benefits

The costs of car usage, which may include the cost of: acquiring the vehicle, repairs and auto maintenance, fuel, depreciation, driving time, parking fees, taxes, and insurance,5 are weighed against the cost of the alternatives, and the value of the benefits ? perceived and real ? of vehicle usage. The benefits may include on-demand transportation, mobility, independence and convenience.7 During the 1920s, cars had another benefit: "couples finally had a way to head off on unchaperoned dates, plus they had a private space to snuggle up close at the end of the night."48

Similarly the costs to society of encompassing car use, which may include those of: maintaining roads, land use, air pollution, road congestion, public health, health care, and of disposing of the vehicle at the end of its life, can be balanced against the value of the benefits to society that car use generates. The societal benefits may include: economy benefits, such as job and wealth creation, of car production and maintenance, transportation provision, society wellbeing derived from leisure and travel opportunities, and revenue generation from the tax opportunities. The ability for humans to move flexibly from place to place has far-reaching implications for the nature of societies.8

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


Classification

Classification

There are several possible ways to classify internal combustion engines.

Reciprocating:

By number of strokes

Two-stroke engine

Clerk Cycle 1879 6
Day Cycle

Four-stroke engine (Otto cycle)
Six-stroke engine

By type of ignition

Compression-ignition engine
Spark-ignition engine (commonly found as gasoline engines)

By mechanical/thermodynamical cycle (these 2 cycles do not encompass all reciprocating engines, and are infrequently used):

Atkinson cycle
Miller cycle

Rotary:

Wankel engine

Continuous combustion:

Gas turbine
Jet engine

Rocket engine
Ramjet

The following jet engine types are also gas turbines types:

Turbojet
Turbofan
Turboprop



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


Diagram showing the operation of a 4-stroke SI engine

4-stroke engines
Main article: 4-stroke engine
Diagram showing the operation of a 4-stroke SI engine. Labels:
1 ? Induction
2 ? Compression
3 ? Power
4 ? Exhaust

The top dead center (TDC) of a piston is the position where it is nearest to the valves; bottom dead center (BDC) is the opposite position where it is furthest from them. A stroke is the movement of a piston from TDC to BDC or vice versa together with the associated process. While an engine is in operation the crankshaft rotates continuously at a nearly constant speed. In a 4-stroke ICE each piston experiences 2 strokes per crankshaft revolution in the following order. Starting the description at TDC, these are:78

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