#powertrain

Powertrain & Mechanical Engineering September 4, 2026

Transmissions — Comparing MT, AT, CVT, and DCT

A transmission matches engine or motor speed and torque to the wheels. This guide compares MT, torque-converter AT, CVT, and DCT mechanisms, losses, shift quality, and control, then explains why EVs often use a single reduction gear.

Fundamentals · 4 min Powertrain & Mechanical Engineering September 3, 2026

Diesel Engines — Compression Ignition, Torque, and Aftertreatment

Diesel-cycle thermodynamics, common-rail injection, torque and fuel consumption, DPF/SCR aftertreatment, current equipment examples, electrification, and safety.

Fundamentals · 3 min Powertrain & Mechanical Engineering September 3, 2026

Gasoline Engines — Spark Ignition, Efficiency, and Electrification

A practical introduction to four-stroke gasoline engines: Otto-cycle thermodynamics, torque and fuel economy, emissions control, current products, and electrification.

Fundamentals · 3 min