Why are Japanese cars fuel efficient? And why do American cars or German cars cost fuel?

The Dapeng fuel saver is a fuel-saving product that uses an integrated operational amplifier to expand the signal value of the water temperature sensor, reduce the concentration of the fuel injection mixture below 80 degrees Celsius, and reduce the amount of fuel injected to achieve the purpose of fuel saving. The coolant temperature sensor of the EFI truck is an important parameter component of the fuel injection volume of the EFI system. It is a device that uses the principle of changing the electrical signal of the water temperature of the engine to provide a signal to the computer to judge the current water temperature.

Based on this signal, the computer corrects the injection volume to achieve different mixture concentrations. Actual measurements show. There is a 50% difference in the amount of fuel injected between the water temperature above 80 degrees Celsius and the water temperature below 80 degrees, and the ignition time is also relatively late when the temperature is low.

In other words. When the water temperature is below 80 or lower, it is the fuel injection state of the concentrated mixture, and the ignition time is late. This is the main factor in fuel efficiency in summer compared to winter.

In winter, it takes a long time to get the water temperature to 80 degrees due to the warm air. The optimum operating temperature of the engine is 80 to 90 degrees, and in winter, the engine needs to be kept warm rather than dissipated! In winter, due to the influence of moving air, the temperature of the engine is not easy to maintain between 80 and 90 degrees, and the engine will increase the amount of fuel injected and change the ignition advance angle, which will make you unconsciously increase fuel consumption.

In order to maintain the temperature in winter, the engine is mostly in a small cycle; and the state of external circulation. And when you turn on the hot air, the cold air in the car quickly flows through the surface of the heat exchanger, which actually adds an efficient radiator to the cooling circulation system of the engine! Its role can be imagined.

All in all, the fuel consumption in winter is definitely higher than usual, and even higher than turning on the air conditioner in summer; The hot air is more open, and it is more dramatic. This device is to use the integrated operational amplifier to expand the signal of the original water temperature sensor for a period of time when the water temperature is lower than 80 degrees, and give the computer an extended signal value, so that the fuel injection concentration is correspondingly reduced compared with the original fuel injection in a period of time after the low temperature is started to the water temperature is lower than 80 degrees. So as to achieve the purpose of energy saving.

When the water temperature reaches more than 80 degrees, the original water temperature sensor information status will be automatically restored. This device is suitable for all series of EFI engines. As; EFI gasoline engine, EFI diesel engine.

EFI to gas engine. Fuel saving in winter is more than 20%.10% in summer

The fuel saving rate of 10-20% is equivalent to the amount of oil used by the carburetor. The concentration of the mixture is reduced, and the emission of exhaust gas is reduced. For more information, search online (Dapeng Automobile Fuel-Saving Technology Development Center).

Because the person who said this doesn't understand the car at all... German cars have 100 kilometers of fuel consumption liters and 3 liters, Japan can not make it, in the Chinese say that Japanese cars are fuel-efficient, in fact, it is also based on false rumors and psychological factors.

This is pure nonsense, how can the technology of Japanese engines be comparable to that of Germany. Even Japanese cars are fuel-efficient, but it is because they cut corners and the body is lightweight.

1. The difference between engines. The American people are obsessed with large-displacement naturally aspirated V8 engines, often with a displacement of 7 or 8 liters. Almost all of the engines developed by the United States started with 6 cylinders, and 8 cylinders were the standard equipment at that time.

2. Matching of engine and gearbox. Japanese cars are equipped with CVT transmissions on a large scale, and one of the biggest advantages of CVTs is low fuel consumption, while American cars rarely carry CVTs.

3. Overall workmanship. Americans buy cars mainly for practicality, not like Japanese cars. The Americans' car-making concept is different from that of other countries, the engine generally focuses on simple structure, durable leather, and the technology is older than the Japanese one, which is also a reason for the higher fuel consumption of the American model of the same displacement.

4. Vehicle weight. The characteristics of American cars are that they use real materials and are less lightweight, so the weight of the car is heavier than that of cars of the same level, and the fuel consumption is naturally high. In addition, the American leaky car has a dignified appearance, high chassis and high wind resistance, resulting in increased fuel consumption.

As long as it is not well maintained, any car will burn engine oil.

Causes of burning engine oilIt is mainly related to the following three accessories:

Exhaust valve. Valve oil seals.

It is the piston ring jamming.

How to fix itAt present, there are two solutions on the market, one is overhaul, and the other is to release the piston ring. The cost of overhaul is high, and after the repair is completed, it will still burn the engine oil and crack the shirt. The more efficient and simple method is to use PNF repair agent to release the live cavity plug ring, as long as the accessories are okay, there is no serious cylinder can be repaired with PNF repair agent release piston ring, many riders have repaired, you can refer to it.

1.Hybrid Technology:

Toyota's hybrid technology is also the most advanced and mature energy-saving and emission reduction technology for automobiles, which can shorten fuel consumption by about 40% and improve power performance by about 30%. In the starting and idle stages, the car is completely driven by the electric motor, which can achieve zero emission and zero fuel consumption; When the car battery is low, the internal combustion engine drives the generator to charge the battery, and it can also charge the battery when decelerating, so even in the case of congestion, the car can still consume 3 or 4 fuel per 100 kilometers.

2.SKYACTIV SKY:

From rotary engines to SKYACTIV technology, Mazda has always adhered to the path of naturally aspirated engines. Skyactiv Technology not only targets the engine and gearbox, but also includes key components such as chassis and body. The engine exerts an ultra-high compression ratio, which greatly improves combustion efficiency, reduces fuel consumption and increases torque; The gearbox has become smoother and smoother, and the driving feeling is more direct; The chassis realizes two major characteristics: precise operation and comfortable ride; The stiffness and weight of the body structure have also been improved, and the safety factor has been further guaranteed.

Mazda's second-generation Skyactiv technology has a compression ratio of 18:1 and a fuel thermal efficiency of 50%.

engine technology;

This is an engine technology developed by Nissan, which uses a number of avant-garde "black technologies" including variable compression ratio, dual cycle, hybrid injection and electronically controlled turbo pressure relief. The engine added a set of eccentric wheels and crank linkages designed to change the top and bottom dead center positions of the piston when it was running, so that the compression ratio of the engine could be freely adjusted from 14:1 to 8:

1。When the car is doing a good job of focusing on fuel rationality, such as cruising at high speeds, the engine can ensure a higher compression ratio and improve fuel efficiency. However, when the car is about to overtake quickly, the engine can reduce the compression ratio to a certain extent in pursuit of stronger power output.

Attached: Advantages of Japanese cars:

1.Meet market demand:

Japanese brands have been able to achieve a steady increase in market share because their products are in line with the current consumption power of the Chinese market, and the product design is also in line with the consumption value orientation and aesthetic preferences of Oriental people.

2.Guide the change of market demand:

Japanese car design changes according to the needs of the Chinese market, and the speed at which new cars are launched is very fast, constantly guiding changes in demand, rather than changing models when the car is slow. Guangzhou Honda launched a new generation of Accord, and stopped producing the old Accord when the sales of the old Accord were still very tight. The new Mazda6 has been facelifted despite continued hot sales; The Corolla was also launched as soon as the Corolla was selling well.

3.Good cost adjustment ability:

It has the ability to pull down the price point and improve the market competitiveness. In the automotive industry, Japanese companies have a better ability to adjust costs year-on-year. Honda's 2003 new Accord was 50,000 yuan cheaper than the old Accord as soon as it was launched.

The listing price of the Toyota Camry is more than 100,000 yuan cheaper than the original imported car. The high cost performance makes the new car sell well as soon as it is launched, and even the supply exceeds demand.

Millions of car purchase subsidies.