Camless Engine Testing Near Completion
【Summary】Qoros and Freevalve say evaluation of the Qamfree engine is almost complete.
The camshaft has always been a fundamental part of the internal combustion engine. Freevalve and Qoros plan to change that with an inovative camless engine. Evaluation of the technology, known as Qamfree, is expected to be completed later this year.
The Qamfree difference
In case you need a refresher, Qoros Auto debuted the Qamfree system at the 2016 Beihing Motor Show. The role of a traditional camshaft is to open and close the engine valves.Qamfree eliminates the cam and handles this task with pneumatic-hydraulic-electronic actuators (PHEA). The PHEA design provides precise control over both valve lift and duration. It also allows for independent programming of the intake and exhaust valves.
With Qamfree, several other components are phased out as well. The list includes the throttle body, timing chain, wastegate, and direct fuel injection system. This provides serious size and weight reduction. Freevalve states it will also keep the cost low.
The Qamfree technology is showcased in a turbocharged 1.6-L 4-cylinder gasoline engine. The stout mill produces 230 hp, which Qoros claims is a 47% increase in power over a camshaft engine. Engineers also say fuel consumption is reduced by 15%.
Testing nears completion
Qoros is tasked with building the camless engine. China's Chery Automotive owns Qoros Auto, which means volume production of the Qamfree could be coming soon. According to SAE, two other OEMs are also expected to be adopt the technology.
Supercar manufacturer Koenigsegg used to be affiliated with Freevalve, but the two are now independent. Currently, it's just Qoros and Chery building sub-assemblies in China.
Qoros and Freevalve are evaluating Qamfree on a fleet of test engines. Freevalve's Chief Technology Officer commented on the testing.
"The concept evaluation, started 2015, is expected to be completed by the end of this year. It has involved torque, power, fuel consumption, emissions as well as packaging and weight optimization for vehicle installation."
Hopefully, that means we're one step closer to a production camless engine.
Mia is an ASE Certified Master Automobile Technician, L1, L2 and L3 Advanced Level Specialist. She has over 12 years of experience in the automotive industry and a bachelor’s degree in automotive technology. These skills have been applied toward content writing, technical writing, inspections, consulting, automotive software engineering.
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