如果crv5真的發生汽油跑進去機油裡
主要的問題是不是機油潤滑不足導致引擎受損
那是只要勤換機油就不會有問題了嗎？
還是會有其他問題？
感謝回答
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活頁 wrote:
如果crv5真的發生...(恕刪)
放心用吧，CR-V这个级别世界第一，这么好的车。跟着台本的质保政策走呗。东风本田ppt里面，在黑龙江省大庆地区回收了一辆，然后在稀机油的条件下，2000小时重负荷试验，分析机油中无金属成份。拆开零件，测磨损量几乎为零。不保证准确，楼主可以找来ppt看一下。
换机油肯定没这个风险了。车在增高2cm后会报警，东本言增高3cm不影响发动机，再增高，发动机会吸进液态机油，造成火花塞缺火而缺缸。
本田发动机最近几年在日本都使用0w20这种极稀的机油。个人觉得磨损不用担心
大陆现在车主们发现，现代途胜 起亚niro 长安cs75都有机油增多现像。这三款车都上市几年了。
东风本田诂计还会出ppt
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thao wrote:
换机油肯定没这个风险了。车在增高2cm后会报警，东本言增高3cm不影响发动机，再增高，发动机会吸进液态机油，造成火花塞缺火而缺缸。
本田发动机最近几年在日本都使用0w20这种极稀的机油。个人觉得磨损不用担心
大陆现在车主们发现，现代途胜 起亚niro 长安cs75都有机油增多现像。这三款车都上市几年了。
东风本田诂计还会出ppt.(恕刪)
按這個邏輯來說 , CR-V機油尺只是第二重保護措施，由人來監控，沒監控到也不用擔心，不管機油被稀釋還是添加過多的機油都不會造成發動機影響，因此..2月的那次事件作法就是把這個人為監控機制取消，然後換操作手冊(避免留下證據)
我想機油尺刻度原先的作用是目視必免添加過多或過少的機油用，而不是目視添加過多的其它東西..比方汽油。
增加3cm 是在原先機油中增加多少比例的汽油，東本並沒有說明..而且汽油是燃點低的東西，可以加到機油裡面？
如果這麼容易解決，現在就不會停只銷售了. 不過 , 或許是本田這幾年賣的太好又不低調造成一有病要你命的情況
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以下是AMSOIL(第一家合成機油)對於fuel-dilution搭一些看法：
http://oil-synthetic.com/2017/02/22/fuel-dilution-can-wreck-havoc-on-an-engine/
22 Feb Fuel Dilution Can Wreck Havoc On An Engine
Posted at 15:17h in Fuel Additivesbyoil-admin
Gasoline and diesel fuel are great solvents.
Their solvency isn’t so great when gas or diesel fuels infiltrates your engine’s crankcase and contaminates the motor oil, a condition known as fuel dilution.
Of course, vehicle owners prefer no fuel mixes with the motor oil. Fuel finds a way to mix with the oil. With that in mind, a cautionary limit of up to 2.4 percent fuel dilution in gas engines and 3.4 percent in diesel engines may be acceptable, provided viscosity has not significantly changed. Fuel dilution that surpasses these guidelines requires attention.
A number of factors can cause fuel dilution, including the following:
Leaking fuel injectors
Excessive idle time
Incomplete combustion
Low engine temperatures
Frequent short-trip driving
Worn piston rings/excessive blow-by
Some applications are especially prone to fuel dilution given their operating conditions. Police fleets, fire trucks and other emergency vehicles are great examples. Common conditions include periods of idling punctuated by short bursts of driving. Delivery trucks, too, can suffer from fuel dilution given the constant stop-and-go conditions that prevent the oil from warming enough to evaporate any accumulated fuel.
Gasoline direct injection (GDI) can be another cause of fuel dilution. GDI technology locates the fuel injectors directly in the cylinder as opposed to the manifold. This arrangement allows for greater control over the injection event, allowing engineers to fine-tune engine for greater efficiency and power. The added efficiency is the reason GDI is expected to be a staple of most new vehicles built by 2020.
One side-effect is fuel dilution. As fuel is sprayed into the combustion chamber, it can wash past the rings and down the cylinder walls, into the oil sump.
However it occurs, fuel dilution can cause a number of problems.
Reduced oil viscosity interferes with formation of a durable lubricating film, inviting wear. Combustion zone parts are especially prone to wear, including the piston, rings and liner. Reduced viscosity also negatively affects the oil’s ability to function as a hydraulic fluid, which is critical in engines with variable valve timing.
Fuel can wash oil from the cylinder wall, causing higher rates of ring, piston and cylinder wear.
Reduced effectiveness of detergency additives limits the oil’s ability to guard against deposits.
Increased oil volatility results in higher oil consumption, requiring more frequent top-offs.
Accelerated oxidation reduces the oil’s service life and requires more frequent oil changes.
It is sometimes possible to smell fuel in a motor oil sample; oil analysis is the most accurate method of determining the severity of fuel dilution. Visit www.oaitesting.com to see the options available through Oil Analyzers Inc. If the oil analysis report reveals abnormal fuel dilution, the next step is to determine the cause.
AMSOIL PI
Start with the easiest and least expensive fix. Use a fuel system cleaner, such as Performance Improver (Pi) or Diesel Injector Clean (ADF). Sometimes a piece of debris can lodge in an injector tip and prevent it from closing, allowing fuel to trickle into the cylinder and wash into the crankcase. A treatment of fuel-system cleaner may be all that’s required to solve the problem. If that doesn’t work, it’s likely time to visit a mechanic.
Sometimes, driving conditions are to blame for fuel dilution, reducing your idling time and, of course, use a high-quality synthetic motor oil to guard against accelerated wear. Oil film thickness is related to viscosity, and excessive fuel dilution reduces viscosity regardless of oil quality, film strength is a function of base oil and additive quality. Amsoil synthetic motor oils use top-grade base oils and additives to help protect components from wear.
Vehicles prone to fuel dilution typically operate under severe service. For maximum protection, customers should use AMSOIL Signature Series Synthetic Motor Oil, which has extra protection for added peace of mind.
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活頁 wrote:
如果crv5真的發生汽油跑進去機油裡
主要的問題是不是機油潤滑不足導致引擎受損
那是只要勤換機油就不會有問題了嗎？...(恕刪)
不是真的會不會發生，而是"必然"會發生(內燃機問世後的百年老問題TRUBO與NA都會)
只是本田這顆引擎似乎在暖車階段汽油噴多了，在暖車轉速未提高而又多短途的使用...
節能太有自信大概是目前問題的重點，平常開車就不用在意油耗了提高行駛里程或一路大腳也是目前的解決方案。
目前的報告都是不會磨損引擎零件，給的建議都是勤換機油，如果有能力可以自己弄成本比較低。
本田原廠沒有給的建議增加機油黏度或許可以試試0W20改0W30、5W40
汽油會在運作過程中揮發，水或其他雜質比較可怕。
原本以為是為了熱效率進氣門提前開啟的關係，但是機油乳化的問題似乎沒有。
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