CarteaWikiAuto NewsElectric Motors in Cars: The Secret Behind Their Superiority Over Traditional Engines

Electric Motors in Cars: The Secret Behind Their Superiority Over Traditional Engines

Nasser Ahmed
Nasser Ahmed
2025-08-27
contents

In an era witnessing a rapid technological revolution, traditional transportation methods are radically changing as electric vehicles gradually replace fossil fuel cars that have relied on internal combustion engines (ICE) for decades. The fundamental question here is: Why do electric vehicles use electric "motors" instead of "internal combustion engines"?

This question raises an important discussion about the technical differences between these two types of powertrains, and highlights the technical reasons that have made electric motors the ideal choice for this new era.

This article aims to clarify the core differences between electric motors and traditional engines, explaining how each works, the benefits that electric motors provide in modern mobility, and presenting a detailed comparison that sheds light on future transformations in the automotive industry.

Components of Electric Motor vs. Internal Combustion Engine

Electric Motor

Internal Combustion Engine

Contains a single moving part (rotor)

Contains thousands of moving parts such as pistons and valves

Does not require oil or fluids

Dependent on engine oil and various fluids

Simple cooling due to low heat loss

Complex cooling systems ensure stable operating temperature

Converts electrical energy directly into motion

Converts thermal combustion energy into motion mechanically


Energy Efficiency

  • Internal combustion engine efficiency is approximately 20-30%, with much energy lost as heat.

  • Electric motors achieve efficiency between 85-90%, with a more direct conversion of electrical energy into motion.

  • This efficiency difference leads to significant energy savings and reduced environmental pollution in electric vehicles.

Performance and Torque

  • Electric motors provide full torque from zero RPM, enabling immediate and smooth acceleration.

  • Combustion engines must reach a specific engine speed to deliver maximum torque, reducing initial acceleration response.

  • Electric motor speed is controlled easily by adjusting electrical frequency, eliminating the need for multi-speed transmissions.

Maintenance and Operating Costs

  • Electric motors contain far fewer parts, reducing complex and expensive maintenance requirements.

  • No need for oil changes, filters, or exhaust system upkeep.

  • Regenerative braking in electric cars helps reduce wear on parts such as brake discs.

  • Electric vehicles cost less to operate long term due to lower energy consumption and maintenance.

Technical and Operational Comparison Table

Property

Electric Motor

Internal Combustion Engine

Number of parts

About 20 parts

More than 2000 parts

Energy efficiency

85-90%

20-30%

Torque delivery

Full torque from 0 RPM

Torque varies with speed and RPM

Maintenance

Low, minimal

High, frequent oil and filter changes

Emissions

Zero emissions

Harmful gas emissions

Noise

Very quiet operation

High engine noise

Transmission system

Single-speed or none

Requires multi-speed transmission

Acceleration response

Instant

Delayed due to engine nature

Benefits of Electric Motors

  • Simplified vehicle engineering: reduces weight and mechanical parts.

  • Improved efficiency: reduces energy waste and better fuel/electricity consumption.

  • Environmental sustainability: reduces carbon emissions and combats climate change.

  • Driving comfort: smooth acceleration, quiet operation, and better motor control.

  • Lower maintenance costs: longer motor lifespan and less frequent breakdowns.

Challenges Facing Electric Motors

  • Need development of battery technologies to improve range and charging capacity.

  • Higher upfront purchase cost compared to combustion engine vehicles.

  • Charging infrastructure is still being developed in many regions worldwide.

The difference between electric motors and internal combustion engines goes far beyond the word "engine"; it reflects a fundamental change in how energy is sourced and converted inside the vehicle. Electric motors represent the future of mobility by offering significant improvements in efficiency, emissions, operational costs, and delivering unmatched comfort and performance. With advancing technology, better batteries, and more widespread charging infrastructure, electric vehicles are poised to become the dominant choice, playing a vital role in environmental preservation and sustainable transport.

Also Read:

previous: "Geely Galaxy Unveils the Starshine 6 Hybrid: A 'Disruptive' Sedan with Advanced Technologies Competing with the Giants"Next: YangWang U9: A Chinese Electric Hypercar That Breaks the Speed Barrier and Outperforms Koenigsegg and Bugatti.
Nasser AhmedNasser Ahmed
Chief editor information:
Nasser Ahmed, a die-hard fan of hardware devices, has been obsessed with machinery since childhood. With over 10 years of automotive repair experience, he's a true expert. He loves sharing knowledge about car fault repairs, helping countless car owners get back on the road.

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