What is the displacement of a car?
2 Answers
The displacement of a car is a specialized term in hydraulic transmission, referring to the volume of fluid inhaled or expelled per stroke or cycle. Below are relevant details: 1. Effective cylinder volume: The displacement of a car is the sum of the effective volumes of multiple cylinders. Common displacements on the market include 0.8, 1.0, 1.1, 1.3, 1.4, 1.5, 1.6, 1.8, 2.0, 2.4, 3.0, 3.6, 4.2, 4.7, etc. 2. Relationship between displacement and effective cylinder volume: The unit is liters. A larger displacement means a greater total cylinder volume, requiring more fuel to be injected into the cylinders, resulting in higher fuel consumption. However, a larger displacement does not always mean higher fuel consumption. For example, the Honda Accord 3.5 is generally more fuel-efficient than the 2.4 because it uses variable cylinder management. At low speeds, only three cylinders work (i.e., only three cylinders inject fuel), and only half the cylinders work when additional power is needed, making it more fuel-efficient than the 2.4.
When I was buying a car, I seriously considered the concept of engine displacement for the first time. It refers to the total volume of all cylinders in the engine, measured in liters or milliliters. A larger displacement means the engine can intake more air and fuel, resulting in stronger power. Driving my small-displacement 1.6L car, the fuel consumption for city commuting is just over 8 liters, which is quite economical. However, it struggles on highways or uphill climbs, with sluggish acceleration. Later, I test-drove a large-displacement 2.0L SUV, which had quick power response and no problem hauling loads, but the fuel consumption soared to around 12 liters, which was hard on the wallet. Nowadays, cars equipped with turbo technology can deliver explosive power even with small displacements. Coupled with environmental policies promoting new energy vehicles, displacement is no longer the sole criterion. It's wise to consider actual driving experience and fuel efficiency comprehensively to choose a car that suits your driving rhythm.
