1951-01-01

Antiknock Requirements of Passenger Cars 510195

THE 1949 octane-number requirement survey conducted by CRC indicated that:
  1. 1.
    Maximum octane-number requirements based on Research numbers of commercial fuels were 1-2 units higher than those based on primary reference fuels.
  2. 2.
    Blends of diisobutylene, isooctane, and n heptane, matching the commercial fuels in Motor and Research octane numbers, followed the commercial fuels closely in antiknock behavior.
  3. 3.
    About 50% of the customers’ cars knocked on the fuel found in the gasoline tanks.
  4. 4.
    The spread in octane-number requirements of engines, which manufacturers consider representative of their production, was almost as great as that found among cars in service.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X