I don’t think I’m a conspiracy theorist, but sometimes I feel I can behave that way. The reason is that when you ask about the car industry and the fuel economy of a car, it makes noise for hours (usually until you clean the room). I’m not that bad anymore, I can measure the boring factors of my audience, but I definitely tell you one thing. When gas prices start approaching $ 4 per liter, people no longer shoot me down so quickly.
So what about my game? The first thing I want to mention is that today’s cars don’t really offer very good mileage compared to the mileage they’ve gained over the years. We’ve definitely seen hybrids, and were impressed that they could reach the highest 50 MPG, but honestly it’s not a big achievement. The 1984 Honda Civic Coupe won 64 MPG on the highway and 48 MPG in the city. Today, no hybrid can match these numbers, not even the current Honda Civic Hybrid!
Modern Civic Hybrids do not get the same mileage for the same reason. It’s heavy. Much of the extra weight comes from all the equipment we valued in the car (and the large rechargeable battery on the belly of the car). Most people will be surprised to hear that modern cars often outperform the bulky steel animals of the 1960s and 70s.
I tell you this because we need to refute one of the most common arguments I’ve heard that our car can get better gas consumption: “Manufacturer me If we can get better performance from our cars, they will do it. ” Visit:-https://cars-scanner.jp/
This is stupid
Looking at the average MPG for US production vehicles, this is exactly what the government demands for these averages. If the government raises the COFFEE requirement, manufacturers will increase the mileage per liter of cars. We’re all used to having acceptable fuel consumption and all the horns and whistles, so they’re definitely always complaining about it. Now they have to find a way to give us both. You can do one.
Please note that there was no fuel injection in the 1984 Honda Civic, which acquired 64MPG on the highway. I don’t have a computer to tune my system. A carburetor (a device with an essentially hourglass-shaped tube) is used to mix air and fuel.
The weight of the car in the 1960s was about the same, but the engine was much larger. It was not uncommon to have an engine of 5.0 liters or more, and even 7.0 liters or more in a car. Many of these engines achieved MPG scores of up to 20 and 30 seconds on the highway. I owned several cars in the late 60’s and early 70’s, with an average of 22 MPG city MPG and 5.0 liter engine.
One of the reasons this is possible is called compression ratio. One of the things an engine does when burning gasoline or diesel is to compress the air-fuel mixture before igniting it. The more compressed the air-fuel mixture, the greater the power gained from ignition. In the late 1960s, the compression ratio of many cars exceeded 11: 1 (some 13: 1). The compression ratio of modern automobiles ranges from 9 to 1. This means that modern engines reduce compression to 30% and reduce the output produced by burning fuel (depending on a few other factors).
Why is the compression ratio so low? I’m sure this is what you are looking for. The reason is simple and complicated. This is the octane number of the fuel that burns the car. If you look at the gas in your pump and look at the numbers for regular, medium and premium gas blends, you may not know what that means, but these are octane numbers. 87-93, usually depending on height. The higher the octane number, the more the air-fuel mixture can be compressed. In 1966, the octane number of premium gasoline was 107. This allowed the engine to further compress the air-fuel mixture.
It is very important to note that the higher the compression ratio, the more completely the car burns (the molecules get closer to each other and ignite faster) and the emissions decrease. High pressure ratio = lower emissions = more environmentally friendly. The next obvious question is why the octane number is so low. There are two reasons for that. First, one of the things used to raise the octane number was lead. We all know that lead is bad, and that it burns in an engine produces a rather annoying exhaust. Second, oil companies have determined that the greatest benefit of the refining process is the production of 87 octane fuel.