Most widely used plastic to make engine oil pan

2022-07-25
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Making engine oil pan with plastic

since 2009, the last metal oil pan will complete the test method of bursting strength: become its historical mission. At that time, man Hummel company plans to put the first plastic oil pan for cars on the market. It is generally believed that the high temperature of the working environment is a major obstacle to the use of plastic parts in the engine, and this view will change with the advent of the plastic oil pan

"when plastic parts are put on the market in large quantities, everything will follow naturally." Said Mr. Thomas jessberger, who is responsible for innovative technology at Mann Hummel in Germany. This success was first reflected in the plastic air filter in 1968. The first plastic intake pipe was born in 1989. Man Hummel plans to use the plastic oil pan (Polyamid 6) in large quantities in the production of car engines from 2009. Compared with the aluminum alloy die-casting oil pan, the weight of the plastic oil pan will be reduced by 60%. Mr. jessberger pointed out that at that time, man Hummel company would produce 100000 plastic oil pans every year, but he did not disclose which OEM manufacturer adopted this product

according to Mr. jessberger, man hoomer company received an order for a plastic oil pan from an OEM manufacturer in 2006. However, the company was unable to supply the oil pan because it needed to have the capacity of mass production to complete the order. At that time, the company did not have the capacity of mass supply

Figure 1 from 2009, the plastic oil pan with a weight of only 900g will replace the aluminum alloy die-casting oil pan with a weight of 2.2kg

may BMW be the user of the plastic oil pan

it is understood that plastic materials are used for the fenders of BMW X5 cars, composite materials (SMC sheet molding materials) are used in BMW 6 Series cars, and the polyester transmission oil pan near the engine in BMW 5 series, 7 series and Land Rover cars is a pioneer in using plastic parts in cars

Professor Rudolf stauber, leader of the dynamic load and materials R & D Department of BMW, believes that the utilization rate of plastic parts in the automotive production field will increase from about 16% of the weight of cars (excluding plastic plastics) to 20% in the future. In the modern automobile manufacturing industry, polymer materials will play an important role, providing new possibilities for more economical manufacturing of products with complex shapes and higher technical requirements. In other words, plastic parts are not only light, but also have the advantage of low price

the same is true of the oil pan. Plastic oil pan can not only reduce the cost of mold manufacturing, but also omit the machining process after die casting of aluminum alloy oil pan. Its production cost should be 30% ~ 40% lower than that of aluminum alloy oil pan. In addition, the plastic oil pan further reduces the space occupation, production and assembly costs due to the integration of oil duct, oil suction pipe, oil filter, separate spare oil port and splash plate. Mr. jessberger believes that in the application of plastic materials, almost all the potential of light structure design has been tapped, but its functional integration has not been fully realized

Figure 2 parts made of plastic materials have been found near the engine, such as cylinder head cover, engine cover, suction pipe system, fan frame, intercooler cooling water pipe, air filter, pipe and current oil pan

more widely used

according to Mr. Klaus bender, leader of European automotive R & D center of DuPont engineering plastics, In addition to the production of suction pipe, valve cover or oil pan, the use of their plastic materials has a wider range of applications

Fig. 3 research and development evolution of Materials Science in the automobile manufacturing industry from 1980 to 2008: with the progress of materials science and technology, the application of plastic materials has made great progress in recent years

the use of plastic materials in the automobile industry is naturally limited, mainly due to the maximum temperature during their long-term use. At present, the allowable working temperature of plastic parts varies with different environmental conditions, generally between 170 ~ 200 ℃ (such as when used as water tank and oil tank). That is to say, when the operating temperature of the engine combustion chamber reaches 1000 ℃, it is not appropriate to use plastic materials for the centrally loaded structural parts

polyamide is the most commonly used plastic material installed near the automobile engine, accounting for about 4% ~ 6% of the engine weight. A small part of other materials are PP (polypropylene) material, PBT (polybutylene) material and BMC (unsaturated polyester mass molding compound). More than 20 years ago, people considered using carbon fiber reinforced plastic materials to accomplish these tasks, but all this has become an illusion

plastic metal composite material

plastic metal composite material is a new material that combines the advantages of plastic and metal. This composite material is no longer a new concept. Plastic coated parts of metal frame or metal grille have been available for many years, while DuPont directly sprayed plastic on the metal surface, because the metal surface has the greatest strength according to the mechanical principle

there are also plastic materials with metallic nano coatings. Du testing machine material hardness testing state Co., Ltd. has exhibited this kind of plastic material with metal nano coating for the first time at the "k-2007" Plastic Technology Expo held in Dusseldorf in October, 2007. DuPont's goal is to replace aluminum 100% with this material

Figure 4 plastic cylinder head cover belongs to polyamide parts in automobile engine compartment

power of using plastic materials

power of using plastic materials is the functionality of automobile plastic parts. Plastic parts with good functionality can improve production capacity and reduce production costs. Only the plastic mold can save the cost. 8. Pay attention to the waterproof of the electrical control cabinet: the service life of the plastic mold is 10 times that of the aluminum alloy mold. More and more strict automobile exhaust emission standards also require that the weight of the automobile is becoming lighter and lighter. More and more plastic parts are used to replace metal parts. A good example is the SCR selective catalyst system, which requires very durable materials for urea regeneration

in addition, the tensile strength, yield strength and elongation of metal tensile samples are carried out by the testing machine at the speed specified in gbt228. The broad market in Japan is also the driving force for the development of automotive plastic parts. The plastic parts used in Toyota's cars are 4% ~ 5% less than those used by European automobile manufacturers. For example, in Toyota aygo cars, the weight of plastic parts accounts for 11% of the total weight. Mr. bender believes that the Japanese are conservative. They are waiting to see if there will be other new materials. Mr. jessberger believes that so far, he has not seen that "the automobile parts made of plastic materials have reused metal materials". (end)

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