In order to save fuel, why didn t the ancient students add oil to the oil lamp but only added water?

At that time there was a special lamp called a fuel saving lamp. He can say that it can indeed achieve the effect of fuel saving, its structure is also relatively unique, it is a double-layer structure, the top is oil-draining, the bottom is hollow, you can pour water below, reduce the overall oil temperature, so as to reduce the loss of oil, but I think it is not cost-effective, it is better to refuel inside. It is precisely for this reason that this lamp is not particularly much, it is also a few large households, people prefer his appearance, most ordinary people use ordinary oil lamps, and do not add water to it, generally only this special lamp adds water, and the normal lamp must be refueled inside.

Ancient people were very intelligent and wiseSo they have invented a lot of things, and they are very smart and intelligent, but this is really not very cost-effective, because this thing is not effective in saving oil lamps, but it is in vain. But the big families in ancient times must have been very fond of this kind of thing.

Because the big families in ancient times liked this kind of special structure of things, and they felt that they had a special style, so they all liked it very much, and ordinary people would definitely not have this kind of thing in their homes, in fact, the children of real scholars were relatively richBut ordinary oil lamps don't actually consume much oil.

Most homes, like oil lamps, can still afford to useAnd the oil lamp is actually a common lamp at that time, most of them will not use the kind of fuel-saving lamp, in fact, it is very expensive, it is better to add oil to it, the oil was not so expensive to sell at that time, and the oil lamp did not consume much oil, at that time, the people used the lamp at night, and some even used candles, so it is generally said that people who read books use these oil lamps Most people use candles, and there are some other lamps, but oil lamps are definitely more cost-effective than candles.

Because water injection can reduce the temperature of lamp oil burning, reduce the volatilization of lamp oil, although it can not directly reduce the amount of lamp oil, but it can prolong the use time of lamp oil, which plays a role in fuel saving in disguise.

Adding oil will be more wasteful of oil. But the cost of water is very low. So adding some water is affordable and useful. It was good for students who were very poor at the time.

There are many ways to classify cars, but the most important way is to classify them according to their purpose.

According to the relevant provisions of China's national standards, automobiles are divided into the following types:

1.Truck.

Also known as trucks, trucks, trucks. It is mainly used to transport various goods or tow full trailers. According to the load capacity (tons, 6 tons, 14 tons), trucks can be divided into four types: miniature, light, medium and heavy.

2.Off-road vehicles.

It is mainly used off-highway to carry people and goods or traction equipment, and is generally driven by a full shaft. According to the drive type, it can be divided into 8 types.

3.Dump trucks.

Refers to a cargo truck that can automatically tip over the cargo box. There are two types of dump trucks: those that dump backward and those that can be dumped in three directions.

4.Towing a car.

Vehicles that are specifically or primarily used for towing. It can be divided into full-trailer tractor and semi-trailer tractor.

5.Special purpose vehicles.

Vehicles equipped with special equipment and special functions in order to undertake special transportation tasks or operations.

6.Passenger car.

Refers to a vehicle with more than 9 passengers, with a rectangular compartment, mainly used to carry people and their luggage. According to the length of the vehicle (meters, 7 meters, 10 meters, 12 meters), the passenger car can be divided into five types: miniature, light, medium, large and extra-large.

7.Sedan.

Travel in a small passenger vehicle for 2 to 8 people. According to the engine displacement size (1 liter, liter, liter, 4 liter), it can be divided into five types: miniature, universal, intermediate, mid-to-high-end and high-end sedans.

According to the different structures and uses of attachments, we can simply classify forklift attachments as follows: 1. Side-shifting forks, which are used to move the goods with pallets left and right to align them, so as to facilitate the accurate forking and stacking of goods; It improves the working efficiency of the forklift, prolongs the service life of the forklift, and reduces the labor intensity of the operator; It saves warehouse space and improves the utilization rate of the warehouse. Installation Level:

ISO 2 3 Class 4. Installation form: external type, integral type.

Carrying capacity: 2500 8000kg. Function Description:

left and right) sideways. 2. Pitch adjustment fork, through hydraulic adjustment of fork spacing, to achieve handling of goods of different specifications of pallets; There is no need for the operator to manually adjust the fork spacing. The labor intensity of the operator is reduced.

Installation class: ISO 2 3 4 class. Installation form:

Hanging type, integral type (all use the original forklift fork model & with fork type). Carrying capacity: 1500 8000kg.

Function description: Adjust the fork spacing.

A car is a non-track vehicle that is powered by power and has 4 or more wheels, which is mainly used for: carrying people and (or) goods; towing vehicles carrying people and/or goods; Special Purpose.

Vehicles that generally have four or more wheels and do not rely on rails or wires to travel on land. Automobiles are usually used as trailers for carrying and towing passengers and goods, and are also modified or equipped with special equipment to complete specific transportation tasks or operational tasks, but do not include machinery intended for agricultural use. Full trailers and semi-trailers do not have their own power units, and they only belong to the category of automobiles when they form a car train with a tractor.

Car components.

1. The engine is the power unit of the car. Its role is to generate power from the combustion of fuel, and then drive the wheels through the transmission train of the chassis to drive the car. There are two main types of engines: gasoline engine and diesel engine.

The gasoline engine consists of a crank connecting rod mechanism, a valve mechanism and a fuel supply system, a cooling system, a lubrication system, an ignition system, and a starting system. The ignition method of diesel engine is compression-ignition, so there is no ignition system.

2. The role of the chassis is to support and install the automobile engine and its various components and assemblies, form the overall shape of the car, and accept the power of the engine, so that the car can move and ensure normal driving. The chassis is composed of four parts: the drive train, the driving system, the steering system and the brake system.

3. The body is installed on the frame of the chassis for the driver and passengers to ride or load goods. The body of cars and buses is generally an integral structure, and the body of trucks is generally composed of two parts: the cab and the cargo box.

4. Electrical equipment is composed of two parts: power supply and electrical equipment. Power sources include batteries and generators. Electrical equipment includes the starting system of the engine, the ignition system of the gasoline engine and other electrical devices.

: a non-track-carrying vehicle driven by power and having 4 or more wheels, mainly used for: carrying people and/or goods; towing vehicles carrying people and/or goods; Special Purpose.

Cars with more than four wheels

A car is a vehicle that has its own power equipment and drive, generally has four or more wheels, and does not rely on tracks or wires to drive on land.