Jingmen vehicle urea manufacturers association meeting called "speed up the upgrading of domestic refineries, ensure that the upgrade implementation time in accordance with the gasoline and diesel standards scheduled supply of qualified oil PetroChina, Sinopec, CNOOC must first be completed on schedule the task of transformation. Accelerate automotive engine-related technology research and development and applications. "For the upgrade schedule, Wang said the higher than expected reservoir section, refining enterprises pressure is not small. Before going to the end of 2014, Ⅳ emission standards are fully implemented, strong and high-profile commitment to promote this year's supply of low sulfur diesel in the oil system. After a comprehensive supply, has been the biggest problem, the most talked about urea supply and quality assurance issues finally have a relatively clear solution. November 3rd, China Internal Combustion Engine Industry Association released the "diesel engine NOx reduction agent Urea solution manufacturing conditions and product quality supervision and management approach" (hereinafter referred to as "" management approach "") and "diesel engine nitrogen oxide reduction agent is an aqueous urea solution production conditions and product quality supervision and management approach implementation details "(hereinafter referred to as" "rules" "). To this end, the reporter interviewed the Deputy Secretary General of China Internal Combustion Engine Industry Association WEI force, the country's diesel fuel have reached the national standard of four no small difficulty. This may require not only in the petroleum, petrochemical standards, local refineries also have standards. Now even the country's three local refineries lot of petrol to not. "Wang said reservoir section at the end of 2017 to implement the five countries is not very realistic, but the country's four-car use of vehicle exhaust gas purification of urea to meet the standards, the main problem is the economic and technical aspects. Two oil are listed companies, Every year profit targets of pressure and therefore to transform the more progressive in their interests to a large one-time investment, financial statements would be ugly to deal with a lot of car models, the importance of using urea solution:.. J6M used is DEUTZ BF6M1013 firewood -28E4 country four 6-cylinder engine, turbocharged and intercooled, EUP, the displacement of 7.146L, auto show car is rated at 280 horsepower, rated speed 2300r / min, maximum torque 1100N.m, maximum torque speed 1400r / min, the country adopted a four-stage SCR exhaust after treatment technology country four models:. J6L Engine: Deutz BF4M2012 new technology roadmap and BF6M2012: EUP + SCR urea solution for vehicle controllability Youping 1 ) technical condition of the engine: engine technology in poor condition, will make the oil deteriorate faster as pistons, piston rings and cylinder walls badly worn, it will cause serious air channeling; improper oil circuit adjustment, make fuel combustion is incomplete; crankcase. poor ventilation and the "three filter" too dirty, it will lead to increased external contamination; abnormal wear will increase the iron content, therefore, the technical condition of the engine oil will directly affect the degradation rate (2) of the engine work under harsh conditions, will make.? such as engine oil deterioration accelerated work long hours under heavy load conditions, the oil temperature is too high and will set the depth of oxidation; while the engine is started frequently, stopping when open, the load is too light, it will produce more because of the oil temperature is too low many low sludge deposits. Here, vehicles running on different roads (or working machinery in different workplaces) under and climate (job), have a significant effect on the degradation process of oil.? oil pollution causes and engine operation Impact:? 1) water or coolant temperature is too low 2) poor crankcase ventilation 3) engine idle too long, open frequent downtime 4) piston ring seal is not good, blow-severe hypothermia resulting sludge???. sediment (sludge), rust and corrosion? 5) foreign matter inhale dust pollution and low efficiency air filter? 6) crankcase breather port without filter or too dirty? 7) air filter, diesel filter and oil filter efficiency is very low. The resulting abrasive wear, deposits.? ??? summary, the deterioration of engine oil deterioration factors from the working conditions and the technical condition of the engine.? 2 ,? how to prevent the oil pressure is too Low ?? car is in use, the oil pressure is too low if it is found, it should be to find the cause and eliminate, or easily melt and burn causing crankshaft W "hold tile" faults, the engine the more serious cases may therefore be scrapped.