Is hybrid gasoline-electric vehicle really more fuel efficient?

Hybrid vehicles have high fuel economy and superior driving performance. The engine of a hybrid vehicle uses fuel, and when starting and accelerating, it is assisted by an electric motor, so it can reduce fuel consumption. Simple In other words, it costs less on fuel than a car of the same size.

Petroleum-electric hybrid power is divided into multiple categories. Under different technical solutions, automobile fuel economy will also fluctuate greatly. The following is the classification of petrol-electric hybrid power:

From the degree of dependence on electric energy, hybrid power can be divided into weak hybrid power MILD HYBRID (also known as mild hybrid power, soft hybrid power, micro hybrid power, etc.), moderate hybrid power, and severe hybrid power FULL HYBRID power (also known as full hybrid power). Hybrid, strong hybrid, etc.), plug-in hybrid PLUG IN HYBRID

Weak hybrid

Weak hybrid commonly uses BSG belt transmission starting/power generation technology, such as the BSG model of Chery A5 (Motor 10KW), usually the fuel saving is less than 10, the motor does not directly participate in driving, and is mainly used for starting and recovering braking energy.

Medium hybrid power

Medium hybrid power often uses ISG built-in crankshaft starting/power generation technology, such as Buick LaCrosse EcoHybrid (motor 15KW), which usually saves about 20 RMB of fuel.

Strong hybrid power

The representative product of strong hybrid power is TOYOTA PRIUS (motor 50KW), which can save 40% of fuel.

Plug-in hybrid power

Plug-in hybrid power will provide a better fuel saving ratio, but will consume a certain amount of electricity, such as the test data of Volkswagen Golf TwinDrive (motor 130KW) , 8 kWh of electricity and 2.5 fuel consumption per 100 kilometers.

Among the above forms of hybrid power, strong hybrid power can be said to be a real innovation. It combines an engine and an electric motor, which not only uses the gasoline engine to provide power at high speeds but also fundamentally optimizes fuel. The two major advantages of the energy provided also give play to the advantages of the electric motor in outputting strong torque at low speeds, reducing fuel consumption, purifying emissions, being silent, and recovering and recycling the wasted braking energy that was originally converted into heat energy.

Generally speaking, gasoline-electric hybrid technology has greatly improved fuel economy, greatly saved costs for users, and further reduced air pollution. Although gasoline-electric hybrid power consumes a certain amount of electricity, the electricity bill is still higher than Gas is much cheaper, so the cost of using a car is reduced to a great extent.

Extended information

Advantages:

1. Go to a gas station to refuel like a gasoline car without changing your car usage habits; the government and enterprises promote this product There is no need to invest in new charging equipment or filling stations.

2. High fuel economy and excellent driving performance. The engine of a hybrid vehicle uses fuel, and when starting and accelerating, it is assisted by an electric motor, so it can reduce fuel consumption and can be shut down. The internal combustion engine is driven solely by the battery, achieving "zero" emissions.

3. The power is better than that of a pure internal combustion engine vehicle with the same displacement. Especially when accelerating from a start, the electric motor can effectively make up for the weakness of the internal combustion engine's lack of torque at low speeds

4. Reduce mechanical noise in the car and use electric motors to work at low speed or idling.

Disadvantages:

1. The technology is immature and related products are overpriced. The cost of two power systems of electric motor and internal combustion engine is much higher than the cost of one power system.

2. Driving at high speed or constant speed for a long time does not save fuel. Because the fuel consumption advantage of hybrid vehicles mainly relies on potential energy accumulation to save electricity. In other words, the more frequently a hybrid vehicle brakes and slows down or starts and stops frequently during driving, the more energy it will save. If you drive at a constant speed for a long time, its energy-saving effect will be reduced accordingly.

Reference: Baidu Encyclopedia - Gas-electric hybrid