Any advanced progress will be accompanied into automotive and this new camless engine become more perfect technology.
The ideals of the engine car (also motorcycles) that have not materialized until now is, the valve or valves operated without Nokken as (camshaft or camshaft) camless alias. Without a ridge or back, the simpler construction machinery, the number of components used less, work more efficient engine.
| Nok or ridge is required to activate the valve that moves up and down for opening and closing the suction hole and buan engine room. Alternatives offered by the ridge for the engineers, the solenoid, it turns out not to be trusted reliability. Because of that until now could tdaik dwujudkan.
Efforts to improve the work efficiency is currently only valve with variable valve timing (VVT): time of opening and closing the valve can be changed according to engine speed. The latter is also widely used, high-lift valve that can be changed. However, the engineer still not satisfied, they continue to strive for better.
Robot
The latest technology is called the valve management Intelligent Valve actuation (IVA), developed by Automotive Camcon of England. Systems still rely on back, but no longer connected to the crankshaft (crankshaft or crankshaft).
To move the cam shaft, Camcon using self-developed technology, the Multi-stable Actuator (evolution of Binary actuation Technology / BAT). BAT is a mechanism for robots or mechatronics working with digital concepts. While stable Multi-Actuator (MSA) is a combination of BAT with an electric motor.
By the way, Camcon could make the cam shaft or the back does not have to spin the engine over. This component can also only move half rounds, according to the needs of the machine.
The advantage of this new system, the optimization of high-lift, timing and duration of the valve opening and closing can be adjusted to load and engine speed. No less interesting, can be used for combustion engines Homogeneous-Charge Compression Ignition (HCCI) or the Miller cycle. It could even replace the two-step cycle kmenjadi four working smoothly.
2020
"We found a solution, no longer rely on the back of the crankshaft. This allows to calculate the ideal working valves on each round and engine load. Later, both for petrol and diesel engines, "said Roger Stone, Director of the Camcon, previously Director of Technical Design Ricardo, the famous engine engineering companies in the UK.
The electric motor can be arranged works. As for the working conditions of valves, actuators also added that working with the concept of BAT - shift - which require very little energy to work. With this concept, motors or actuators that drive the camshafts can use a 12 volt power (same as the current car). Lift rate, time (timing) and long open-close valve opening and closing, can be set more flexibly.
Due to flexible and energy efficient, Stone believes IVA would later play a major role in the new machines, especially in 2020. At that time, fuel consumption and regulation of increasingly stringent emissions.
Desmodromik
According Camcon, IVA including compact dimensions, the same as today's high valve cap (cylinder head cover). No less interesting, IVA valve technology developed by desmodromik (without spring) and still use the trigger (Roker).
Spinning motion of the actuator is converted into up-down (linear) high precision on each valve. Each valve can also be set individually. Hence, the concept is considered fit for the machine to be shut down some cylinders while leisurely stroll (save fuel)
It's schema of of comless engine How it Works
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Full turn of engine for new comless engine
In this mode, the electronically controlled actuator rotates 360 degrees. Actuators always start from a standstill.
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Oscillation for new camless engine
In this condition, the actuator does not rotate fully, driven by the needs or predetermined angles or only a portion of the back profile. In this way, the valve moves in accordance with the purposes of the maximum.
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Further, the IVA control system called Valve Control Unit (VCU) works faster than a conventional engine control computer, for example, for injection or ignition. If for injection and ignition, power is calculated each round, the IVA monitor valve position is calculated 100 times for each cycle.
