The gasoline-engine never actually powers the wheels. In a Series hybrid, the wheels are powered solely via the electric motor, with the gasoline-engine providing power for the electric motor, sort of like a generator. With Parallel hybrids, the engine can be powered in one of 3 ways: directly by the engine, directly by the electrical motor, or by both systems working together. When it comes to full hybrid vehicles, there are two main types of powertrains Parallel hybrids and Series hybrids. This typically happens at lower city speeds, but is one reason why you may see a full hybrid’s City MPG rating higher than its Highway MPG rating (where in standard gasoline-powered vehicles, the opposite is true). Most full hybrids can actually operate for some distance solely on electric power. However, the electrical component in a full hybrid vehicle is capable of handling far more of the workload than that of a mild hybrid. Like mild hybrids, full hybrid vehicles also come equipped with both a gasoline engine and an electrical component.
Mild hybrid systems go by many differing names, but some common examples are eAssist (General Motors), eTorque (Fiat/Chrysler), and EQ Boost (Mercedes). Instead, the batteries are recharged through a combination of power from the gasoline engine, and energy recovered when the vehicle brakes (also known as regenerative braking). Normally found in the form of 48 volt electric systems, mild hybrids do not need to be plugged in. Instead, the system is used to give a small boost to the vehicle’s gasoline engine, typically upon acceleration from a dead stop, and to assist in removing the burden of power-hungry systems, such as air conditioning, on the gasoline engine. Like the name implies, a mild hybrid system typically isn’t going to propel the vehicle on electric power alone. One of the newest innovations in hybrid technology is that of a “mild” hybrid system. In this article, we’ll take a look at the 4 main types of hybrid vehicles and describe what makes each of them unique. While nearly everyone has heard of hybrid vehicles, most people are actually unaware of the various types out on the market.
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