Research On Evaluating Green-effect Theories And Methods Of The Lightweight Of Passenger Cars

Third crisis have been facing by Human on a sustainable development for human society,which has been becoming a complexity and seriousness because of the shocks from theexhaustion of resources, energy, environment and human population. It is the crises that havemade Human learn the lessons from ones of which there is one way only being used to searchgreen-effect for human society's sustainable development. The generalized definition upongreen-effect is that the green ethics, green ideas and green behavior of human in life andproductive activities are being implemented so that human social ecosphere is beingestablished in which there will be harmonious coexistent situations between human and natureand then between human social sustainable development and natural biodiversity. And therestricted definition on green-effect is that product's green-effect functions as follows: savingmineral resources, saving energy resources, decreasing environmental discharge amountbecause of being applied green ideas, green techniques, environmental techniques andstandards to the products in order to protect natural environment and human social sustainabledevelopment. In view of this, the facts below about behavior and population being increasedrapidly of passenger cars are a paradox to the definitions of green-effect of passenger cars.Because the passenger cars population in Chinese mainland have been increasing, onwhich the population are 5330.0 (104 cars) in 2010 that are 231.74– fold as much thepopulation as did in 1960; and the curb mass average of passenger cars of the mainland ownbrand is heavier 8～10% than the same kind of passenger cars of developed country ownbrand, the oil consumption by the passenger cars of the mainland own brand is 2.5– fold asmuch the consumption as Japan own brand one, is 2.27– fold as Europe own brand one.Therefore, the oil consumption by the population is 30.46% as much the oil consumption bythe mainland and the oil consumption by the population is 56.26% as much the oil importamount by the mainland in 2010, the iron ore consumption by the population is 21.8% asmuch the iron ore consumption by the mainland and is 48.77% as much iron ore importamount by the mainland in 2010; CO2 discharge amount by the population during it's lifecycle and operation is separately 15.3% and 4.22% as much the amount by the mainland. Asmentioned above, an important measure is the Lightweight of passenger cars being resolvedthe problems above. The major fruits and innovations in this paper as follows.In order to deal with these issues have been caused by the drastic increasementpopulation of passenger cars, the means of reducing curb mass of passenger cars wereemployed. Although the amount of fuel oil can be saved by reducing passenger cars curb massduring use stage, from the Lightweight life cycle perspective of passenger cars, distinctLightweight materials will consume energy resources with different type and quantity. So the result is unclear that the Lightweight of passenger cars can improve its green-effect beforeevaluating from Life Cycle perspective.In this paper, research content as follow:(1) The background of green-effect being arisen has been traced to the source and theissues and concept of green-effect upon the Lightweight of passenger cars have been presented(2) The curb mass of passenger cars has been analyzed based on Industrial Engineering(IE) thinking on eliminating ineffective work and decomposed into effective, ineffective andconditional ineffective curb mass. So the aim of the Light weight of passenger cars is to lowerthe curb mass at utmost degree and make curb mass incline towards it theoretical limitation.(3) L2R (the Lightweight, L; Reusing, R; Recycle, R) guideline has been advanced inorder to search the green-effect of the Lightweight of passenger cars and to tally with theThinking of the Sustainable Development and Circular Economy; And the evaluating indexsystem has been constructed applying VGOCS(Values-Goals-Objectives-Criterial andStandards) method and related documents.(4) The coupling method has been advanced between 4F (Material Flow, F; Energy Flow,F; Environment Factor Flow, F; Information Flow, F) and LCA (Life Cycle Assessment, LCA)in order to structure the schemes for the Lightweight of passenger cars being searched thegreen-effect.(5) The coupling method has being advanced between Euclid Approach Degree and fuzzy– matter element in order to evaluate green-effect of the Lightweight of passenger cars.In the case study of this paper, the evaluation upon schemes of the Lightweight for H typepassenger cars have indicated the effectualness of the major fruits & innovations, evaluatingtheories & methods and 4F–LCA system being structured. The evaluating results as follows.(1) The evaluating comprehensively results on the green-effect of H type passenger carare the green-effect of scheme No.3#-3 is better than one of scheme No.3#-5,…, and so on.(2) As to the scheme No.3#-3 being made of aluminium alloy body in white andmagnesium alloy casting, the balance point (the proportion of recycle aluminium alloy orrecycle magnesium alloy) should be 60%, if the proportion is bigger than 60% , then thescheme No. 3# - 3 green-effect is in optimization.(3) If the scheme No.3#-3 green-effect is not in optimization, then the Lightweightscheme No.3#-5 green-effect is in optimization being made of AHSS (Advanced High StrengthSteel) BIW (Body in White)—recycle magnesium alloy, and the Lightweight scheme No.3#-4green-effect is in second optimization being made of AHSS BIW proto-magnesium alloy.And it indicates that the results being evaluating by means of single target of the greeneffectto H type passenger car are below.(1) The priority order according to the mineral resource's exhaustion amount (Sbeq.) isthat the mineral resource's exhaustion amount of scheme No. 3#-3 is better than one of schemeNo. 3#-5,…,and so on. (2) The priority order according to the energy resource's exhaustion amount (MJ) are theenergy resource's exhaustion amount of scheme No.3# - 3 is better than one of scheme No. 3# -5,…, and so on.(3) The priority order according to the environmental affect potential amount (Env) are theenvironmental affect potential amount of scheme No.3#-3 is better than one of schemeNo.3#-2,…, and so on.