1.LTG Engine Characteristics
Ten engine 2013 Ward GM 2.0L LTG engine Technical characteristicsFunction effect
the continuously variable valve DVVT
double overhead camshaft timing to improve low-speed torque when the
to extend the range of the maximum torque, emission control. Double Channel exhaust turbocharger reduce interference and improve the exhaust gas flow rate
to eliminate turbo lag at low engine speeds when SIDI direct injection technology facilitate ignition and combustion control to increase the intake air, and a power efficiency
also to reduce emissions , emission reduction of approximately 25 percentage at cold start air-cooling system reduces turbocharged and intercooled air temperature, increase the amount of oxygen to enter;
help combustion in the cylinder, in order to improve the power. Two-stage variable displacement oil pump oil feed rate to match the engine load;
improve fuel economy and prevent energy waste sand casting of the block fine toothed chain design, smoother engagement;
eliminating noise and enhance endurance sex. Balance shaft modules incorporate internal design, reduce the length of the short chain drive;
to facilitate reducing engine noise. Fine sand casting excellent structure adhering to the cylinder Ecotec noise reduction and shock absorption;
Also embedded cast iron main bearing caps to reduce vibration and noise.
this engine can be equipped with a 2.0L LTG with the US version of the Regal GS models brother, so the two technologies are also many similarities. GM 2.0L LTG engines have different data in different markets to adjust, but the introduction of the domestic engine will use the higher output tuning.
GM 2.0L LTG engine with single twin-scroll turbochargers, turbocharger and supercharging traditional cooling oil cooling. Single twin-scroll turbochargers The greatest advantage is the ability toExhaust gas discharged from the engine firing order to separate adjacent cylinders, the exhaust gas stream is separated from the benefits of reduced interference to the turbine blades, when the engine speed is low at all times in a higher turbine efficiency.
GM 2.0L LTG engine with direct injection technology, which is a diesel engine fuel supply system development Come. The principle is that gasoline is injected into the cylinder through the high-pressure oil pump pressure, high pressure pump through the fuel pressure after the pressure is lifted, and the gasoline engine oil 2.0L LTG up to 150bar, high oil pressure and oil pipelines to let oil pump more sophisticated.
GM 2.0L LTG engine with intake and exhaust valves when the variable timing technique, the timing of the engine valve early , the valve lift is not regulated, but with the VVT valve timing technology gradually improved, many engines are beginning to use the variable valve lift technology, its advantages is the use of valve lift to control the gas, so throttle effect was weakened, the pumping loss is greatly reduced hysteresis of the engine intake air will be reduced accordingly, so that the response speed of the engine may be raised.
GM 2.0L LTG using inline four-cylinder engine design, the engine in terms of ride comfort, generic engine with 2.0L LTG a balance shaft module and is integrated in the lower end of the engine crankshaft, and thus the engine more compact.
The variable displacement oil pump 2.0L LTG common vane pump is used in the engine, a variable displacement oil pump provide different oil pressure depending on the operating conditions of the engine, so as to reduce the unnecessary power consumption. LTG engine vane pumps using oil chamber is changed by the size of the spool to provide different pressures, simple structure, high flow, easier adjustment.
and other technical details, both of the piston spray cooling, sodium or hollow chargeValve, intake and exhaust variable valve timing and other technical features, which are now the main engine industry. And with its amazing power output, no wonder can squeeze into the top ten rankings 2013 Ward engine.
The Common LTG engineers cooling circuit of the engine is optimized and improved, with two variable oil pump and the various details of the optimization, so that the frictional resistance of this engine 16 to reduce the percentage, per liter of oil can be made with this 2.0T engine with 1.7 km.
LTG engine compatible transverse vertical position and the platform, but can also occur in the vertical position mounted on the drive in large or medium-sized transverse precursor GM’s car and this launch is positioned as the exclusive engine Cadillac, Chevrolet and Buick will not be used.
engine equipped models
Cadillac XTS, Cadillac ATS, Opel Insignia Sports Tourer
