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Engine Rebuilding Technical Guide 2008
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Open Loop/Closed Loop and Learning
Closed-loop control can be programmed to either add or subtract up to a certain percentage of fuel in order for the engine to reach the target air/fuel ratio.
Electronic Fuel Injection (EFI) is all the rage today and rightfully so. EFI has many advantages that allow us to dial in the fuel in a dramatically more precise fashion than was ever possible with a carburetor. One of the tools at our disposal is the closed loop algorithm where the target air/fuel ratio commanded in the ECU is compared to the actual air/fuel ratio read by the O2 sensor. If the two do not match, the ECU makes small changes by either adding or subtracting from the commanded fuel in the fuel table to equalize the two.
Top 10 Ken Block Gymkhana Films
Who doesn’t like a little bit of burnt rubber?
America’s Best Engine Shops 2022 | H&H Flatheads
Despite not being a fancy, state-of-the-art set up, Mike and his team at H&H have a great thing going. The equipment does exactly what it needs to, his team is experienced and the shop has built thousands of vintage engines for customers everywhere!
America’s Best Engine Shops 2022 | Choate Engineering Performance
This shop’s dedication to quality engine work, its growth, its machining capabilities and its impact in the diesel industry, all make Choate Engineering Performance well deserving of Engine Builder’s and Autolite’s 2022 America’s Best Diesel Engine Shop award.
America’s Best Engine Shops 2022 | 4 Piston Racing
The 4 Piston Racing facility in Danville, IN houses two buildings – one is 12,000 sq.-ft. and the other is 2,500 sq.-ft. The shop is very heavily focused on Honda cylinder heads and engine work to the tune of 300+ engines and 1,000 cylinder heads annually!
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Women in Motorsports: Johnna Dunn
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