Otto Cycle - Processes with p-V and T-s Diagrams

Otto Cycle – Processes with p-V and T-s Diagrams

Otto cycle is a gas power cycle that is used in spark-ignition internal combustion engines (modern petrol engines). This cycle was introduced by Dr. Nikolaus August Otto, a German Engineer. An Otto cycle consists of four processes: Two isentropic (reversible adiabatic) processes Two isochoric (constant volume) processes These processes can be easily understood if we [...]

Introduction to Lathe

Introduction to Lathe

Lathe is a machine tool used to remove unwanted material from a given workpiece to get desired shape. It is generally used for machining cylindrical workpieces. This article gives you a short introduction to lathe and explains its working. Origin of Lathe: The origins of lathe can be traced back to Ancient Egypt and ancient [...]

Properties of Fluids

Properties of Fluids

Properties of fluids determine how fluids can be used in engineering and technology. They also determine the behaviour of fluids in fluid mechanics. The following are some of the important basic properties of fluids: Density Viscosity Temperature Pressure Specific Volume Specific Weight Specific Gravity 1. Density: Density is the mass per unit volume of a fluid. [...]

Fluid - Definition and Types

Fluid – Definition and Types

Fluid is a substance that is capable of flowing. It has no definite shape of its own. It assumes the shape of its container. Liquids and gases are fluids. Types of Fluids: Fluids can be classified into four basic types. They are: Ideal Fluid Real Fluid Newtonian Fluid Non-Newtonian Fluid 1. Ideal Fluid: An Ideal [...]

Introduction to Gas Power Cycles

Introduction to Gas Power Cycles

A thermodynamic cycle is a sequence or series of processes performed on a system, that eventually returns the system to its original state. Gas power cycles are thermodynamic cycles, which use air, as the working fluid. A gas power cycle may consist of heat transfer, work transfer, pressure variations, temperature variations, volume variations and entropy [...]

Shaper

Shaper

A shaper (or shaping machine) is a reciprocating type of machine. It is used for removing unwanted material and producing flat surface on a given workpiece. In a shaper, a single point cutting tool undergoes linear reciprocating motion over a stationary workpiece. A driving mechanism is used to achieve reciprocating motion. The three commonly used [...]