Yao thinks 20 old before, old Xiali of national home litter is 3 crocks, later as the car closer and closer civilian, 4 crocks of engine squeezed 3 crocks to hold market of car of family expenses of 100 thousand course in the round. Nowadays as discharge code more and more severe, 3 crocks of machine stage a come back, appear on the model of 2289 even.
What advantage do 4 crocks of engine have as to contrast of 3 crocks of engine? I feel OK to cent comes true advantage and bogus advantage.
True dominant positionIt is managing cost. The B series with for instance active service BMW is modular engine, one-cylinder platoon measures 0.5L. With 2.0T 4 crocks are fiducial, doing a crock less is 1.5T 3 crocks, doing two crocks more is 3.0T list 6 crocks continuously, different platoon quantity and the engine spare parts that enrage crock of number are completely general. Reduced cost, be helpful for naturally making price farther play detective below the premise that assures manufacturer profit, huff advantage.
2 it is to optimize a space, especially horizontal buy engine, make it can shorten 3 crocks engine length, the transverse space of engine room is more ample, of structure of the P2 of current and own brand and Europe department brand are popular odd electric machinery below outfit of can easier ground, P2.5, P3 insert report to mix use a system. Want to know, the car look forward to nowadays needs to increase the sales volume of car of new energy resources considerably, the double integral that will satisfy a state (integral of new energy resources and company are average oily bad news is integral) policy. Odd electric machinery inserts report to mix moving systematic just is most of can short smooth fast production mix change a structure. Come so, mix the layout space that changes a structure easier, and electromotor smooth-going, low the inadequacy that twisted powerful dominant position to just make up for small platoon to measure compliance of peace of force of 3 crocks of motor-driven. Both each takes what he needs, still can run through pure report travel a beautiful work believes an oily bad news, what is there against it.
If somebody follows you to bring profit,3 crocks of machine save oil, must not be duped! This kind of viewpoint is actually changing a concept secretly, mix 3 crocks of machine small to measure confuse sth with sth else.
Above all, what our country is versed in letter ministry shows the oily bad news of level to check a method to use is NEDC loop of Europe. The test operating mode of this kind of method is too tender, it is delay is quickened, so special be helpful for model of pressure boost of the small turbine that discharge an amount running low oily cost. Number of cylinder of 3 crocks of machine is little, often mean an amount not big also, multiply at present at least with 3 crocks of opportunity that 1.5L did not exceed in the car. So you see a car the industry letter ministry of 3 crocks of machine is oily cost is not high, that is a hidebound contribution, not be 3 crocks effect. If be to be the same as a technology,4 crocks of the time, quantity that be the same as a platoon, chance that take gas kind together are mixed photograph of 3 crocks of machine is compared, latter not only cannot save oil, possible instead more excessive consumption of fuel and oil.
Why so say? Do not see spare parts of 3 crocks of aircraft count less than 4 crocks of machine, cylinder number turns into original 3/4, but did not forget, below same rotate speed, it the workload of every air cylinder still increased 1/3 than 4 crocks of machine. Not only such, the norms of the spare parts such as one-cylinder cubage, piston, valve and the 4/3 that reaching its workload also is 4 crocks of machine. So spare parts respect is to tear open nevertheless east the wall fills on the west wall, what to save actually.
This still is the circumstance of engine hardware level merely. After arriving to install car start off actually, the congenital blemish that 3 crocks of machine differ because of NVH, when economic movement interval and coincide of poor NVH interval, leader plant to do not sacrifice comfortable sex is mixed travel character, be forced to adopt the ECU demarcate strategy that sacrificial oily bad news gave way for smooth-going. Low rotate speed is medium and for instance laden (OK and equivalent for accelerator journey, as above graph is encircled that 235) operating mode, be helpful for saving oil originally, but 3 crocks of machine are planted in this of the circumstance tremble so that let a person break down, the engineer rises archives to pull the means such as high rotate speed to come through gear-box defer with respect to need avoid this operating mode. So 4 crocks of machine with the quantity that be the same as a platoon are compared, the integrated thermal efficiency of 3 crocks of machine drops actually.
The 1.6T before myself contrast crosses BMW to change a money 4 crocks 316 with present 1.5T 3 crocks 318, their motivation parameter is same, transmission case is same also, but in 318i travel basic not under 1500 turn, and deep step on the gas of in a way can fall actively block, play rotate speed 2000 turn above. And 316i cruise rotate speed is OK low to 1100 turn, rotate speed is pulled 2000 turn above need accelerator walks more greatly.
actual measurement oily bad news of the home also very show an issue: What 316Li uses is old money N13B16 1.6T 4 crocks of engine, in sunshine 34 degrees of high temperature fall (high temperature should open air conditioning continuously not only, and lighting effect to what turbine adds press also is adverse) , actual measurement oily bad news 100 kilometers 7.3L; And 3 crocks of engine are in the new generation B38 1.5T of 318Li the cloudy day falls 23 degrees to comfortable temperature, actual measurement oily bad news 100 kilometers 7.5L. Platoon amount is small, engine is new, crock number is little, had not opened air conditioning, as a result oily bad news does not fall to rise instead. Is this oil of so called province of 3 crocks of machine?
