שאלות בקשר למילוי דלק [Ralliart 2009]

[SkateFreak]

היי חברים.

 

שבוע שעבר קניתי רכב חדש מיצובישי לאנסר רליארט 2009.

 

על המכסה של המיכל דלק כתוב שאני צריך למלא 98 אוקטן,

אבל אין לנו בתחנת דלק ב"יישוב" 98, רק 95. התחנת דלק הקרובה הבאה היא חצי שעה נסיעה ממני.

 

האם נגרם נזק לרכב אם אני ממלא 95? האם הצריכת דלק משתנה לטובה או לרעה?

 

נ.ב. במידה ואני רוצה למלא 98, יש צורך לרוקן את המיכל המכיל 95 או שזה בסדר אם הם מתערבבים?

 

 

תודה לעונים לשאלות התם שלי (:

[re_ilan]

חכה למומחים הכבדים.

כשלי היתה שאלה דומה בקשר לפאסט מודל 85 שגם אצלה היה רשום שצריך 98, המוסכניק שלי "אישר" לי לשים 95. אני סמכתי עליו בתקופה הקצרה שהיא היתה אצלי, אבל לא היה לי אותה מספיק זמן בשביל לדעת האם נגרם נזק ממשי.

[vpvi]

השאלות שלך עניינו אותי ומצאתי את האתר הבא שאני חושב עונה על השאלות שלך http://www.faqs.org/faqs/autos/gasoline-faq/part3/preamble.html

 

6.15

 

Can I mix different octane fuel grades? Yes, however attempts to blend in your fuel tank should be carefully planned. You should not allow the tank to become empty, and then add 50% of lower octane, followed by 50% of higher octane. The fuels may not completely mix immediately, especially if there is a density difference. You may get a slug of low octane that causes severe knock. You should refill when your tank is half full. In general the octane response will be linear for most hydrocarbon and oxygenated fuels eg 50:50 of 87 and 91 will give 89. Attempts to mix leaded high octane to unleaded high octane to obtain higher octane are useless for most commercial gasolines. The lead response of the unleaded fuel does not overcome the dilution effect, thus 50:50 of 96 leaded and 91 unleaded will give 94. Some blends of oxygenated fuels with ordinary gasoline can result in undesirable increases in volatility due to volatile azeotropes, and some oxygenates can have negative lead responses. The octane requirement of some engines is determined by the need to avoid run-on, not to avoid knock.

 

6.16

 

What happens if I use the wrong octane fuel? If you use a fuel with an octane rating below the requirement of the engine, the management system may move the engine settings into an area of less efficient combustion, resulting in reduced power and reduced fuel economy. You will be losing both money and driveability. If you use a fuel with an octane rating higher than what the engine can use, you are just wasting money by paying for octane that you can not utilise. The additive packages are matched to the engines using the fuel, for example intake valve deposit control additive concentrations may be increased in the premium octane grade. If your vehicle does not have a knock sensor, then using a fuel with an octane rating significantly below the octane requirement of the engine means that the little men with hammers will gleefully pummel your engine to pieces. You should initially be guided by the vehicle manufacturer's recommendations, however you can experiment, as the variations in vehicle tolerances can mean that Octane Number Requirement for a given vehicle model can range over 6 Octane Numbers. Caution should be used, and remember to compensate if the conditions change, such as carrying more people or driving in different ambient conditions. You can often reduce the octane of the fuel you use in winter because the temperature decrease and possible humidity changes may significantly reduce the octane requirement of the engine. Use the octane that provides cost-effective driveability and performance, using anything more is waste of money, and anything less could result in an unscheduled, expensive visit to your mechanic.