Plug-in hybrid
A plug-in hybrid combines an internal combustion engine with a rechargeable electric drive, offering short all-electric trips and extended range using gasoline for longer journeys.
A plug-in hybrid is a passenger vehicle that integrates a conventional internal combustion engine with one or more electric motors and a rechargeable high-capacity battery. Unlike traditional hybrids, which recharge their batteries mainly through regenerative braking and the engine, a plug-in hybrid can be connected to external electrical power to recharge its battery pack. This capability allows repeated short trips to be completed using electricity alone, while the gasoline engine provides flexibility and range for longer trips.
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Key characteristics
Plug-in hybrids store more electrical energy than conventional hybrids and are designed to operate in several modes. Typical features include:
- Dual propulsion: an internal combustion engine plus electric motor(s).
- Larger battery capacity than standard hybrids, enabling a substantial electric-only driving range.
- External charging via household or public chargers.
- Regenerative braking to recapture energy during deceleration.
- Multiple operating modes such as electric-only, hybrid, and charge-sustaining.
How they operate
In electric-only mode the vehicle runs solely on stored battery energy; when that energy is depleted the car switches to hybrid operation, using the gasoline engine and electric motor together. Some models are designed as Extended-Range Electric Vehicles (E-REVs), where the engine functions primarily as a generator to recharge the battery rather than driving the wheels directly. Drivers can often select operating modes to prioritize efficiency, performance, or battery charging.
Range, charging and costs
All-electric range for plug-in hybrids varies by model, commonly allowing anywhere from a few miles up to around 40–50 miles on battery power alone. Charging time depends on the charger's power level and the vehicle's onboard charger; overnight charging on a typical household outlet is common for daily use. Electricity costs per mile are generally lower than gasoline costs per mile, making daily commuting by electric power economical where regular charging is available.
Environmental and economic impacts
Because electric drive is more efficient than internal combustion, plug-in hybrids can produce lower tailpipe greenhouse gas and pollutant emissions during electric operation. The overall environmental benefit depends on the electricity mix used for charging: charging from low-carbon sources yields larger emissions reductions than charging from fossil-fuel–heavy grids. In many regions, incentives and tax policies have encouraged adoption of plug-in hybrids, especially as a transitional technology for drivers who need longer range or lack full charging infrastructure.
History, role and distinctions
Plug-in hybrids emerged from efforts to reduce petroleum use and emissions while avoiding the range limitations of earlier battery-electric vehicles. They occupy a middle ground between conventional hybrids and battery-electric vehicles (BEVs): compared with BEVs they offer extended range and rapid refueling with liquid fuel, but they retain some dependence on fossil energy. Compared with non-plug-in hybrids, they allow significant all-electric driving and lower fuel consumption when regularly recharged.
Further information
For more on how electric motors and hybrid systems work see electric drive basics. For studies and data on emissions and climate effects see resources on greenhouse gas emissions.
Questions and answers
Q: How does a plug-in hybrid car differ from a conventional hybrid vehicle?
A: A plug-in hybrid car can be plugged in to charge its batteries, while a conventional hybrid relies solely on energy generated from braking, coasting or from the gasoline engine.
Q: Can a plug-in hybrid car be driven without using any gasoline?
A: Yes, plug-in hybrids can be driven for long distances—from a few miles to as much as 40 miles—without using any gasoline.
Q: What are plug-in hybrid cars known as?
A: Plug-in hybrid cars are also known as plug-in hybrid electric vehicles or PHEVs.
Q: What are Extended-Range Electric Vehicles?
A: Extended-Range Electric Vehicles or E-REVs are plug-in hybrid cars that use a gas engine exclusively for recharging batteries rather than directly powering the wheels.
Q: Is it cheaper to fuel a car with electricity or gasoline?
A: Fueling a car with electricity is about 5 times cheaper than fueling it with gasoline. That is equivalent to buying gasoline at less than $1 per gallon.
Q: What are some benefits of using plug-in hybrid cars?
A: Using plug-in hybrid cars can reduce greenhouse pollution, help reduce crude oil imports, and produce substantially lower greenhouse gas emissions compared to conventional gasoline cars or unplugged hybrids.
Q: What is the reason for the reduction in emissions in plug-in hybrids compared to conventional gasoline cars or unplugged hybrids?
A: The reduction in emissions results from electric operation being much more efficient than gasoline operation.
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AlegsaOnline.com Plug-in hybrid Leandro Alegsa
URL: https://en.alegsaonline.com/art/77497