Diesel engine.
Diesel cycle

Endothermic engine
Gearbox

Engines

Types of heat engines

Types of heat engines

The heat engines can be classified in many different ways. Then classify heat engines, taking into account six different aspects:

  • They Depending on where is combustion.
  • Depending on the fuel used and the type of lighting.
  • Depending on the movement of moving parts.
  • Depending on how realizes the cycle.
  • Depending on the number of cylinders
  • Depending on the arrangement of the cylinders
Types of heat engines depending on where combustion takes place

Depending on where combustion takes place two types:

  • Exothermic…

Applications of the steam engine

Applications of the steam engine

The applications where the value machine has been used have been changing with the passage of time.

Initially, since the beginning of the eighteenth century, steam engines have been used to power a multitude of uses. At first the steam engine was used as piston pumps. Subsequently, from the years 1780 began to appear alternative engines. With the alternative engines, the steam engines also served to give power to the factories and the industrial one. At the beginning of the 19th century, steam engines began to be used in transport by land and sea.

Steam engines were of great importance…

Diesel engine

Diesel engine

Diesel engines are also known as compression ignition engines. The diesel engine is a type of internal combustion engine that uses gas oil as fuel for the diesel thermodynamic cycle.

The actual performance of diesel cylinder thermal engines is between 35% and 40% and is widely used to propel vehicles.

Diesel engines can operate with 4-cycle and 2-cycle cycles. 2-stroke engines do not consume more fuel than engines with 4-stroke cycles, because the cylinder is swept with pure air and not with the fuel mixture. This is the reason why there is no loss of fuel through the exhaust.

Advantages of the diesel engine

Advantages of the diesel engine

Diesel engines have several advantages over other internal combustion engines:

Advantages related to diesel engine fuel

The fuel of a diesel engine has a higher energy density and a smaller volume of fuel is required to perform a specific amount of work.

Diesel engines inject fuel directly into the combustion chamber, have no air intake restrictions other than air filters and intake pipes and have no vacuum in the intake manifold to add parasitic load and pump losses to push the pistons down against the vacuum of the intake system. Cylinder filling is aided by atmospheric…

Heat engine

Heat engine

Heat engines are a type of alternative engines. Actually, they are the most popular alternative engines.

This type of engine uses the thermal energy caused by the combustion of a fuel (usually gasoil or gasoline) to convert it into mechanical energy.

Heat Machines

The concept of a thermal engine is often confused with that of a thermal engine. These terms are related but not exactly the same. A thermal machine is a device or system that works by establishing exchanges of heat and work with its environment. To achieve this, the machine transforms a substance through a cyclic…

Advantages and disadvantages of the alternative engine

Advantages and disadvantages of the alternative engine

Since the first developments of the alternative engine with the steam engine, its use has been growing exponentially. The appearance of internal combustion thermal engines has helped to accelerate its popularity.

However, the characteristics of the alternative engine entails a series of advantages and disadvantages that we intend to study.

From the first alternative engines such as the steam engine or the stirling engine to the current thermal engines the characteristics of this engine have varied a lot. Although the operating principle for the generation of mechanical energy is…

Differences between the Otto engine and the diesel engine

Differences between the Otto engine and the diesel engine

The Otto engine and the diesel engine are two types of thermal engines. These are two types of endothermic engines that, through thermodynamic reactions, convert the internal energy of the fuel into mechanical work. However, there are certain differences between them.

The most important difference is found in its theoretical cycle. The Otto engine operates according to the Otto cycle by spark ignition while the diesel engine is controlled according to the diesel cycle by compression ignition.

The other important difference is in the ignition of the fuel. In the Otto engine the ignition…

Otto Motor

Otto Motor

The Otto engine is a type of alternative thermal engine that works through the Otto cycle. It is an alternative engine capable of converting the chemical energy of fuel into mechanical energy through a thermodynamic reaction.

Due to the characteristics of this type of thermal engine it can receive several names.

  • Gasoline engine. Due to the fuel used.
  • Otto Engine. Because it works through the otto cycle.
  • Spark ignition engine. Due to the way to start the ignition of the fuel. The ignition starts through a guspira generated by a spark plug.
Use…

Stirling engine applications

Stirling engine applications

The Stirling engine applications can be divided into three main categories:

  • Mechanical propulsion
  • Heating and cooling
  • Power generation systems

A Stirling engine is a thermal engine that works by cyclic compression and expansion of air or other gas, the working fluid. During the Stirling cycle there is a net conversion of heat to mechanical work. The Stirling cycle engine also operates in reverse, using a mechanical energy input to drive the heat transfer in a reverse direction (ie, a heat pump or refrigerator).

Generation of electrical energy…

Alternative engine

Alternative engine

The reciprocating engine uses the reciprocating motion of one or more pistons to convert the pressure into a working fluid. Generally this work is in the form of rotation movement, that is, we obtain mechanical energy. In the opposite direction we find ourselves with the rotating machines in which the movement of the parts of the machine is already rotating like the turbines or the Wankel engine.

The reciprocating engine is also known as a piston engine. The most common alternative engines are internal combustion engines. These thermal engines are widely used in motor vehicles.

The…

Internal combustion engines, external and electric

Internal combustion engines, external and electric

In this website we try to explain the operation of the main types of engines from a theoretical point of view. We present schematically the parts, operating cycles and characteristics of the following types of engines:

  • The thermal engine or internal combustion engine. Inside the thermal engines we explain the gasoline engine (or otto engine) and the diesel engine).
  • The electric motor. This engine has undergone a great evolution throughout history and right now is one of the most used types of engines and with more projection of the future. We will analyze direct current…