There is a reason why the trial of methanol fuel in Taiyuan is so low-key. It is understood that methanol cars do not enjoy the state's preferential policies and financial subsidies for ethanol cars, and the obvious price advantage is a problem. Only the Taiyuan Fertilizer Plant in the Taiyuan area can produce methanol, and production has stopped. There are not many companies that produce methanol in Shanxi Province, and it is difficult to resolve the sources of supply. To purchase methanol from other provinces, plus freight and intermediate links, the price of methanol per ton reached 2,600 yuan, and the space for economic efficiency is already very small. In addition, the social methanol supply system is not matched, and the construction of the methanol filling station has become blind because there is no national standard. The safety regulations for methanol during storage and use have not yet been finalized. Some drivers, passengers and related personnel believe methanol is more dangerous than gasoline. Although Shanxi has been researching and developing methanol vehicles for more than ten years and has a number of patented technologies, the province has 55 methanol demonstration buses in cities such as Jinzhong, Yangquan, and Taiyuan. However, due to the above reasons, Taiyuan is trying methanol fuels. You have to choose to act cautiously and handle it low-keyly.
At present, there are six or seven different technologies for retrofitting methanol cars. Some time ago, Taiyuan Bus Company chose full-fuel and full-methanol dual-purpose engines, which is not ideal for retrofitting costs and power. The next step is to continue trials of related technologies. , comparison, screening.
As early as a few years ago, Taiyuan City began to study methanol-fueled cars, but due to various factors such as the insignificant economic effects, it has not been promoted. Since March of this year, under the pressure of rising oil prices, the Taiyuan municipal government decided to develop a methanol bus, and Taiyuan Bus Company has increased its testing efforts.
The person in charge of the Taiyuan Clean Fuel Vehicle Office did not evade the issue in the methanol car test and considered the outlook to be optimistic. This year's Shanxi coke oven gas methanol production project has started four or five years. The province is expected to increase methanol production next year, and coke oven gas to methanol production costs lower, the price per ton of methanol is expected to be around 2,200 yuan. They said that they hope that the national standards for methanol cars will be introduced early.
Automobile oxygen sensor is a key feedback sensor in the control system of electric injection engine. It is also a key part to control automobile exhaust emission, reduce automobile pollution to environment and improve the quality of automobile engine fuel combustion. The oxygen sensor is installed on the engine exhaust pipe.
Application: Cars
Q: How do I know the O2 sensor is good or not?
A: The only way to know if the O2 sensor is functioning normally is to check its responsiveness to changes in the air/fuel mixture, by Voltage Measurement or Waveform Simulation.
Use a 10-megaohm digital voltmeter. Hook up the voltmeter's red probe to the sensor's signal wire and the black probe to engine ground. (Use back probe method, DO NOT pierce the wire.) For a good sensor, voltage should fluctuate constantly between 0.1 and 0.9 volts after starting the engine for 2 or 3 minutes.
control system of electric injection engine, oxygen sensor, O2 sensor
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