By on April 23, 2020

Despite the switch to low-sulfur fuel and ever more stringent emissions regulations around the world, compression ignition technology still gets a bad rap, tarnishing the remaining crop of diesel engine offerings despite their fuel economy advantages.

In the world of heavy duty pickups and large commercial vehicles, it’s a case of diesel or what else? Electric motors powered by battery banks the size of a refrigerator warehouse? Gotta use what works.

Diesel engine maker Cummins sees plenty of life left in the technology, and believes better is possible. If gasoline engines can shut down cylinders at will to conserve fuel, why not oil burners? (Read More…)

By on August 26, 2016

2016 Chevrolet Colorado Z71, Image: General Motors

Sales of midsize trucks are heating up, and General Motors doesn’t want its slice of the pie to grow stale.

Changes are coming to the 2017 Chevrolet Colorado by way a host of powertrain updates aimed at squeezing better performance and fuel economy out of its volume model. (Read More…)

By on September 16, 2015

GM Ventures Sees Potential in Fuel Saving Technology

General Motors may use an advanced cylinder deactivation technology, co-developed with Delphi and Silicon Valley startup Tula Technologies, in its SUVs and V-8 cars to shut down up to six cylinders to maximize fuel economy, Automotive News reported.

According to the automaker, GM in 2012 invested in Tula, which specializes in automotive engineering. The automaker announced in January that it would pursue the advanced cylinder deactivation technology for some of its SUVs, which could improve fuel economy by 15 percent in cars with engines with more than four cylinders.

The system, dubbed Dynamic Skip Fire, keeps the throttle open during operation and controls cylinder firing through a special valve that cuts off oil to the deactivated cylinders’ valve lifters. According to the company, the engine computer changes the deactivated cylinders to avoid vibration or noise.

(Read More…)

By on January 7, 2015

GM Ventures Sees Potential in Fuel Saving Technology

General Motors has played with cylinder deactivation technology since the days of Carter, sometimes successful, sometimes with more disastrous results.

With Tula Technology’s Dynamic Skip Fire, GM is banking on the former.

(Read More…)

By on November 5, 2014

Valeo Electric Turbocharger

Though full electrification might not be in the cards for most consumers, those looking for turbo power for their vehicles could find a little bit of that black magic in the turbo itself down the road.

(Read More…)

By on July 11, 2014

Ford-Fiesta-EcoBoost

Cylinder deactivation is available on a handful of Chrysler and General Motors V8s, as well as Honda V6s, cutting power to a set of cylinders in order to boost efficiency in the short-term. However, one supplier wants to take this further by using the technology on turbocharged three-cylinder motors, deactivating one cylinder while the other two do all of the work.

(Read More…)

By on January 10, 2014

2015 Volkswagen Passat BlueMotion 01

Another day, another early unveiling prior to the 2014 Detroit Auto Show, this time from Volkswagen AG with their 42-mpg Passat BlueMotion Concept.

(Read More…)

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