par jon8 » 16 déc. 2020, 17:47
Improved starting ability with different fuel types
Alcohol fuels maximizes performance, as they give more internal cooling effects and have higher octane compared to petrol. However, they are more difficult to vaporize than petrol when cold. Therefore, petrol is added to the alcohol during severe cold starts to solve the problem.
The Freevalve system overcomes this cold start issue by utilizing a pre-start heating mode for the initial cranking and first combustion. One intake valve is used and opened late with low lift for maximum turbulence and vaporization. Cylinder deactivation is applied to increase the amount of air and fuel in each combustion during starting and warm-up. Internal exhaust gas recirculation (EGR) is activated in the following combustion cycles, using hot residuals from the previous combustion to vaporize the fuel. Lastly, the engine’s variable compression ratio is adjusted by the Miller cycle.
Furthermore, the TFG can be turned multiple times before turning on the ignition, using the piston to pump the air back and forth to the inlet in a “Heating Mode” cycle. The result – the inlet air temperature is increased by 30˚ C in 10 cycles (taking about 2 seconds) and without need to add petrol to the fuel or starting cycle anymore, making the TFG fossil fuel independent in any climate.
Compactness
The TFG is extremely compact compared to its power and torque capabilities. One would typically associate a 600 bhp power output and 600 Nm of torque with a twin turbo V8 engine. The dry-sump system helps to shrink the engine further while allowing for perfect oil control during extreme driving. The complete long block does not weigh more than 70 kg and fits in a typical carry-on luggage case.
Improved performance
The TFG´s Freevalve system allows full control of the combustion cycle. No other variable valve actuation system offers this level of control and reliability.
Both the intake and exhaust valves can be opened and closed at any desired crankshaft angle and to any desired lift height. This flexibility enables the TFG to deliver low fuel consumption and emission numbers, while still delivering massive torque and power.
Patent-pending two stage turbo system
The Freevalve system made it possible to create a patent-pending, simplified two-stage turbo system. Quite simply, one turbo is connected to three exhaust valves – one from each cylinder. The second turbo is connected to the other three exhaust valves. During low rpm and part to high load, all exhaust gasses are pushed to only one turbo, by only opening one exhaust valve per cylinder – thereby doubling the exhaust gases to that turbine. When adequate boost is reached, the second exhaust valve is opened to start the second turbo.
The result is a three-cylinder two-liter engine that gives 400 Nm of torque from 1700 rpm and max torque of 600 Nm. These never-before-achieved numbers in an engine of this size make the TFG the most powerful engine per cylinder and volume to date, putting it light years ahead of any other production three-cylinder engine today.
Precision performance with Artificial Intelligence (AI)
There are many variables at play in the workings of an internal combustion engine (ICE). These include the complexity of achieving maximum performance, efficiency, reliability and safety with minimum fuel consumption, emission, size and cost.
Adding the Freevalve system to the mix makes it possible for the ICE to reach new heights. The Freevalve system creates many more variables to consider and tune. These can include NOx, CO2 emissions, fuel consumption, HC/NMOG, power and torque, all competing for priority in a cycle.
Then there’s fuel types, lubricants, temperatures, component wear and tear, alongside the Freevalve liberation.
Clearly it becomes virtually impossible for humans to tune each parameter for optimum results. Given this, Koenigsegg has decided to use AI in order to optimize the TFG for different conditions and situations
That is why Koenigsegg has chosen to partner with SparkCognition, the world’s leading AI company, in order to leverage the development of the Freevalve equipped TFG.
An alluring engine sound
Fitted with a custom titanium Akrapovič exhaust, the TFG’s 2-liter three-cylinder engine gives lag-free response and comes with an evocative and deep-throated growl. The TFG may be a small engine but it has a big and “thumpy” sound thanks to its large bore and stroke, combined with the “open” sound of Freevalves. The result is a deep, throaty, responsive and alluring sounding engine. The sound can also be smooth as the exhaust notes can be tuned and balanced by the Freevalve system.
[grand_emoji] :shock: :shock: :shock: [/grand_emoji]
[quote]Improved starting ability with different fuel types
Alcohol fuels maximizes performance, as they give more internal cooling effects and have higher octane compared to petrol. However, they are more difficult to vaporize than petrol when cold. Therefore, petrol is added to the alcohol during severe cold starts to solve the problem.
The Freevalve system overcomes this cold start issue by utilizing a pre-start heating mode for the initial cranking and first combustion. One intake valve is used and opened late with low lift for maximum turbulence and vaporization. Cylinder deactivation is applied to increase the amount of air and fuel in each combustion during starting and warm-up. Internal exhaust gas recirculation (EGR) is activated in the following combustion cycles, using hot residuals from the previous combustion to vaporize the fuel. Lastly, the engine’s variable compression ratio is adjusted by the Miller cycle.
Furthermore, the TFG can be turned multiple times before turning on the ignition, using the piston to pump the air back and forth to the inlet in a “Heating Mode” cycle. The result – the inlet air temperature is increased by 30˚ C in 10 cycles (taking about 2 seconds) and without need to add petrol to the fuel or starting cycle anymore, making the TFG fossil fuel independent in any climate.
Compactness
The TFG is extremely compact compared to its power and torque capabilities. One would typically associate a 600 bhp power output and 600 Nm of torque with a twin turbo V8 engine. The dry-sump system helps to shrink the engine further while allowing for perfect oil control during extreme driving. The complete long block does not weigh more than 70 kg and fits in a typical carry-on luggage case.
Improved performance
The TFG´s Freevalve system allows full control of the combustion cycle. No other variable valve actuation system offers this level of control and reliability.
Both the intake and exhaust valves can be opened and closed at any desired crankshaft angle and to any desired lift height. This flexibility enables the TFG to deliver low fuel consumption and emission numbers, while still delivering massive torque and power.
Patent-pending two stage turbo system
The Freevalve system made it possible to create a patent-pending, simplified two-stage turbo system. Quite simply, one turbo is connected to three exhaust valves – one from each cylinder. The second turbo is connected to the other three exhaust valves. During low rpm and part to high load, all exhaust gasses are pushed to only one turbo, by only opening one exhaust valve per cylinder – thereby doubling the exhaust gases to that turbine. When adequate boost is reached, the second exhaust valve is opened to start the second turbo.
The result is a three-cylinder two-liter engine that gives 400 Nm of torque from 1700 rpm and max torque of 600 Nm. These never-before-achieved numbers in an engine of this size make the TFG the most powerful engine per cylinder and volume to date, putting it light years ahead of any other production three-cylinder engine today.
Precision performance with Artificial Intelligence (AI)
There are many variables at play in the workings of an internal combustion engine (ICE). These include the complexity of achieving maximum performance, efficiency, reliability and safety with minimum fuel consumption, emission, size and cost.
Adding the Freevalve system to the mix makes it possible for the ICE to reach new heights. The Freevalve system creates many more variables to consider and tune. These can include NOx, CO2 emissions, fuel consumption, HC/NMOG, power and torque, all competing for priority in a cycle.
Then there’s fuel types, lubricants, temperatures, component wear and tear, alongside the Freevalve liberation.
Clearly it becomes virtually impossible for humans to tune each parameter for optimum results. Given this, Koenigsegg has decided to use AI in order to optimize the TFG for different conditions and situations
That is why Koenigsegg has chosen to partner with SparkCognition, the world’s leading AI company, in order to leverage the development of the Freevalve equipped TFG.
An alluring engine sound
Fitted with a custom titanium Akrapovič exhaust, the TFG’s 2-liter three-cylinder engine gives lag-free response and comes with an evocative and deep-throated growl. The TFG may be a small engine but it has a big and “thumpy” sound thanks to its large bore and stroke, combined with the “open” sound of Freevalves. The result is a deep, throaty, responsive and alluring sounding engine. The sound can also be smooth as the exhaust notes can be tuned and balanced by the Freevalve system.[/quote]