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Internal combustion engines power the vast majority of the cars and trucks on the road today. That’s not by any means a bad thing. While electrification of our cars dominates most of today’s headlines and resources, the internal combustion engine is still what moves most of us from one place to another.

These tried-and-true powerplants have evolved to meet modern requirements in ways that lend flexibility to current and future needs. A primary advantage to internal combustion is that engines can be powered by multiple fuel sources including gasoline, diesel, and an array of alternative fuels. That flexibility provides options moving forward.

Hybrid cars and trucks, in all their configurations, are a gateway to pure electric vehicle acceptance. Gasoline-electric hybrids rely on an efficient internal combustion engine to function. The hybrid envelope has expanded in recent times to include plugin models that can travel varying distances on pure electric power as well.

Automatic start-stop function is an important technology that makes internal combustion vehicles more city-friendly by shutting an engine off when stopped at a traffic light for more than a few seconds, eliminating unnecessary idling emissions. The engine remains off as long as a driver’s foot is on the brake pedal and the vehicle is not in motion. When the light changes, lifting off the brake immediately restarts the engine and you drive away.

Fuel economy improvements, lower carbon emissions, and overall emissions reductions are also being accomplished by other strategies. Among the most prominent is engine downsizing, which allows the use of smaller displacement engines boosted with power-adding technologies like turbocharging. The old adage, ‘there’s no replacement for displacement,’ is being successfully circumvented by smart engine downsizing.

Some elegant solutions are presenting themselves. One example is Nissan’s VC-Turbo, the world’s first variable compression production engine. Modifying engine compression ratio through sophisticated computer control allows adjusting compression in real time, optimizing efficiency and performance depending on driving conditions.

Another example is the introduction of Chevrolet’s next-generation Dynamic Fuel Management in Silverado 5.3-liter and 6.2-liter V-8 engines. This advanced technology optimizes power and fuel efficiency through cylinder deactivation, determining 80 times-per-second how many cylinders are actually needed for real-time driving needs, with the engine running on as little as a single cylinder to save fuel and decrease carbon emissions.

Gasoline engines have traditionally required a spark plug to ignite the fuel-air mixture in an engine’s combustion chamber to drive a piston. More thermally efficient diesel engines create ignition as a piston compresses the fuel-air mixture at high pressure, without a plug. So, what if you could combine the best of both worlds and make a gasoline engine work more like an efficient diesel? 

It now appears the technology is ready for prime time and production. Mazda’s new SKYACTIV-X is set to become the world’s first production engine to use compression ignition in a commercially available gasoline engine. The automaker’s proprietary Spark Controlled Compression Ignition design provides considerable torque during acceleration, along with sharp engine response, improved fuel efficiency, and lower emissions. 

The worldwide push toward electric vehicles has yielded some surprising consequences. One is an all-out effort to make combustion vehicles better and more competitive with the advancement and sharing of technologies across all platforms.

Is the internal combustion engine dead? Hardly. It just keeps getting better, more efficient, and technologically advanced as the years roll by.

2015 Ford Focus STIt’s well understood that Ford’s EcoBoost engines combine direct injection, variable valve timing, and turbocharging to achieve impressive power and high efficiency. While these advanced engines deliver the acceleration and high fuel economy desired in mainstream models, EcoBoost engines also power the automaker’s performance-oriented models like the Mustang and Fiesta ST. As die-hard enthusiasts always wonder…is there a way to eke even more performance from my car?

And the answer is ‘yes,’ with new hand-held programmers from Ford that adjust a multitude of engine parameters. Tuners often go the traditional route of replacing original equipment with aftermarket parts like performance camshafts, exhaust and intake manifolds, high-flow fueling systems, and even superchargers, sometimes with unwanted trade-offs in efficiency, durability, or comfort.

ford-pro-cal

Ford points out that in an age of computer-controlled engines, a better answer is performance mods using Ford Racing’s programming handset. The $595 ProCal programmer for the Focus ST 2.0-liter EcoBoost engine and Fiesta ST 1.6-liter EcoBoost plugs into the car’s diagnostic link connector port, enabling performance tweaks to everything from throttle response characteristics and idle speed to turbo wastegate control, fuel curves, and spark timing.

In the hands of engine tuning experts, tweaking with the ProCal can bring impressive gains in horsepower and torque output. The Focus ST can gain up to a 90 lb-ft torque increase while maintaining the Ford-backed limited warranty. Custom engine calibrations for the all-new Mustang 2.3-liter EcoBoost are being developed by Ford Racing with a product expected by the end of 2015.

2014 SEMA: Mountune Mustang