Important Mechanical Engineering Short Forms and Abbreviations

Published: 16 Dec 2025

In this article, we will discuss Important mechanical engineering short forms and abbreviations. These short forms are widely used in engines, vehicles, machines, and workshops. Learning them helps students and professionals understand technical terms quickly.

Mechanical Engineering Short Forms and Terminolgies

KPL – Kilometer Per Liter
It shows fuel efficiency. It tells how far a vehicle can travel on one liter of fuel.

CVTI – Continuously Variable Transmission with Intelligence
It allows smooth gear changes. It also improves fuel economy.

IHP – Indicated Horse Power
It is the power produced inside the engine cylinder.

MAP – Manifold Absolute Pressure
It measures air pressure in the intake manifold. It helps control fuel supply.

HRC – Rockwell Hardness Scale C
It measures the hardness of hard metals like steel.

FHP – Frictional Horse Power
It is the power lost due to internal friction in the engine.

VTVT – Variable Timing Valve Technology
It adjusts valve timing. It improves engine efficiency.

EBD – Electronic Brakeforce Distribution
It controls the braking force on each wheel. It improves safety.

ABS – Anti-lock Braking System
It prevents wheel lock during sudden braking. It helps maintain steering control.

RPM – Revolutions Per Minute
It shows how fast an engine or shaft rotates.

SOHC – Single Overhead Camshaft
It uses one camshaft. It controls engine valves.

CI Engine – Compression Ignition Engine
It runs on diesel fuel. Ignition occurs due to compression.

PRV – Pressure Relief Valve
It releases excess pressure. It protects equipment.

HCV – Heavy Commercial Vehicle
It includes trucks and large buses.

BCD – Bolt Circle Diameter
It is the diameter of the circle passing through bolt centers.

IMEP – Indicated Mean Effective Pressure
It shows engine performance. It relates pressure to power.

DTSI – Digital Twin Spark Ignition
It uses two spark plugs. It improves combustion.

SAE – Society of Automotive Engineers
It sets engineering standards. It supports professionals.

MPFI – Multi Point Fuel Injection
It injects fuel into each cylinder. It improves mileage.

OHV – Overhead Valve
It places valves above the cylinder head.

PDI – Pump Düse Injection
It is a diesel fuel injection system. It gives high pressure.

ASFS – Air Suspension with Four Sensors
It adjusts vehicle height. It improves ride comfort.

EFI – Electronic Fuel Injection
It uses sensors and electronics. It controls fuel flow.

SFI – Sequential Fuel Injection
It injects fuel in order. It improves throttle response.

CC – Cubic Centimeter
It shows engine capacity.

VMC – Vertical Machining Center
It is used for machining operations, such as milling.

CNC – Computer Numerical Control
It controls machines using computers. It improves accuracy.

BHP – Brake Horse Power
It is usable engine power. It is measured at the shaft.

ECU – Engine Control Unit
It controls engine functions. It acts like the brain.

SFC – Specific Fuel Consumption
It shows the fuel usage rate. It indicates efficiency.

TDI – Turbocharged Direct Injection
It uses a turbocharger. It increases power output.

LCV – Light Commercial Vehicle
It includes small vans and pickups.

VVT – Variable Valve Timing
It changes valve timing. It improves performance.

TDC – Top Dead Center
It is the highest piston position.

BDC – Bottom Dead Center
It is the lowest piston position.

NDT – Non-Destructive Testing
It checks defects without damage.

TF – Tractive Force
It is the force that moves a vehicle.

FOS – Factor of Safety
It ensures design safety.

TIG – Tungsten Inert Gas Welding
It gives clean and strong welds.

GTAW – Gas Tungsten Arc Welding
It is the technical name for TIG welding.

Conclusion

In conclusion, this article covered Important mechanical engineering short forms and abbreviations in detail. We hope you find something helpful and share it with your friends.