1 turbocharged turbocharged - air-cooled and water-cooled.
Turbocharging is the most efficient way to increase the power output, and the thermal efficiency of the engine is also somewhat higher due to the reuse of exhaust energy.
2 variable turbine section
Turbocharged pressure closed-loop control method:
Exhaust vent valve control
Variable turbine section control
3 overhead camshaft plus more valves
This is a 4-valve mechanism.
4 cylinder direct injection
Single spray, double spray, to better organize the combustion process.
5 variable intake manifold length
Is divided into non-continuously variable and continuously variable intake pipe length, improve the inflation efficiency of each speed.
6 variable valve lift
Improve the efficiency of inflation at all speeds.
7 variable compression ratio
Take into account the economy and power.
8 variable valve timing
Make full use of airflow inertia, improve intake charge.
9 variable displacement (cylinder deactivation technology)
This is the 8-cylinder machine stopped 4 cylinder state.
10 Automatic start and stop (ISG, brake energy recovery)
The ISG is an integrated starter and generator unit that integrates directly with the engine shaft. The ISG incorporates technologies such as motors, modern power electronics, digital signal processing and modern control. The ISG incorporates the functions of starting and generating a traditional vehicle with outstanding start / stop Fast control, good energy regeneration and good auxiliary power, especially in reducing exhaust pollution and saving fuel, which is an inevitable development direction of internationally recognized traditional car, hybrid car and future electric car engine parts. Technology has now completed the development of laboratory prototype.
11 new combustion system
Gasoline pressure ignition
HCCI combustion (homogeneous charge compression ignition)
Gasoline engine is a homogeneous charge of spark ignition, diesel engine is non-homogeneous charge compression ignition, if the gasoline engine can achieve homogeneous charge compression ignition, you can use a very thin mixture, so you can adjust the way according to the quality of fuel directly through regulation The amount of torque to adjust, do not need throttle. Can further improve the thermal efficiency of the engine.
12 thermal management system
Concentrated into the exhaust pipe, you can make better use of waste energy.
13 Electrification, intelligent
Frequency electronic pump and so on.
As the name implies, the electronic water pump is an electronically driven water pump, which drives the circulation of the cooling liquid to dissipate heat. Because the electronic water pump can adjust the working condition of the water pump at will, that is, when the cold start speed is very low, it helps to raise the temperature quickly and reduce the energy consumption. It can work full load when the high-power cooling, and is not subject to engine speed control, you can control the water temperature!
14 variable displacement oil pump
The traditional oil pump work, with the engine speed increases, the oil pressure is also increasing, the oil pressure is mainly limited by the internal pressure limiting valve, but this time the oil is still running at maximum output, not only Consumes the power of the engine, and the input energy into heat, accelerated the aging of the oil because of high oil pressure, the engine corresponding load, fuel consumption will be large; and the previous design of higher oil pressure, there will be more More oil involved in the combustion, oil consumption, emissions will be worse.
Variable displacement oil pump to further improve fuel economy and improve emissions.
15 double cycle
Alto cycle and Atkinson cycle
Atkinson cycle compared with the traditional engine Alto cycle, the most prominent feature is the work of the stroke is longer than the compression stroke, which is often said that the expansion ratio is greater than the compression ratio.Longer power stroke can be more effective use of residual exhaust after combustion So the fuel efficiency is higher than the traditional engine.As long as you understand this point, Atkinson cycle will understand 70% In addition, the Atkinson cycle is only suitable for high thermal efficiency in low speed region.More than 3000 rpm, but the impact Engine power and thermal efficiency, so Atkinson cycle and Alto cycle can be automatically switched, also known as double cycle engine.
