Hyundai KIA Mu G6E L6E six-cylinder engine

Hyundai / KIA
Mu (L6EA)
Manufacturer:	Hyundai / KIA
Production period:	2005-2011
Style:	60 ° V
Engines:	2.7 L (2656 cc)
Cylinder firing order:	1-2-3-4-5-6
Previous model:	Hyundai KIA Delta

The Mu series is a six-cylinder , four-overhead-camshaft ( QOHC ) gasoline engine with four valves per cylinder. The engines are built in Asan (South Korea). The engine block and cylinder head are both made of aluminum as in the predecessor . The stroke of 75 mm remains unchanged as the bore of 86.7 mm. The idling speed is 680 per minute, the dry weight is 168.7 kg. 

The intake and exhaust camshafts of each cylinder bank are connected by a timing chain , the power transmission from the crankshaft to the cylinder head by means of a toothed belt (left picture at the end of the introduction). For those with some models no inspection is provided its exchange then all 100,000 km in those with inspection this all 60,000 km is provided which exchange then all 120,000 km or 60 months The motors are not free runners . The auxiliary units are achieved by a serpentine belt driven.This has a Nachspannautomatik, its inspection is model depending on all 32,000 / 48,000 km or 16/24 months provided an exchange only when determined need 

The valves are actuated by mechanical bucket tappets (right picture at the end of the introduction) They reduce the resistance to the cam compared to hydraulic bucket tappets . Their durability is comparable, but they are cheaper and less dependent on good oil viscosity . Over the years, the surface of the plunger and cam is removed, thus reducing the stroke of the valve in the cylinder chamber. This allows less air to flow in, whereupon the engine automatically reduces the amount of petrol and thus its performance. This is accompanied by an audible ticking sound , because the cam no longer constantly rests on the bucket tappet, but this only once per revolution reached - the advent generates the ticking noise.  This may disappear by the expansion in the engine warm, but that's lash thus become too large. Its inspection is planned in the maintenance plan of every 100,000 km, but maintenance only if required  . In this, the removed material would be balanced on the side of the bucket tappet. The ones used here have no overlying tiles (hence " shimlessmechanical bucket tappets "), so that in this case not the small plate, but the bucket tappet itself is exchanged for a 40 of exactly graduated variants. This can usually be combined with the replacement of the timing belt (100,000 km) or the spark plugs (150,000 km).

Mu 

The Mu V6 is based on the Delta series and took over some innovations of the parallel developed, published in 2004 Lambda series. This includes the CVVT, the switch to mechanical bucket tappets and the almost identical cylinder head. The series consists of an engine that is factory-made in two variants: one for gasoline and one for LPG . The latter is only available in South Korea, where in 2010 debuted models  and is particularly smooth-running alternative to similar economic diesel engine intended. The marketing of the protected abbreviation "LPI" indicates that the system including the control unit is supplied by the manufacturer Vialle.

Compared to the predecessor Delta, the compression was slightly increased, which leads to an approximately three percent fuel savings. In addition, the cylinder head has been modified to supplement a CVVT named intake camshaft timing. This has only an influence on the overlap of the valve opening from the inlet and outlet side (the opening time on the input side is variable), but not on the valve lift and thus the opening duration .It is therefore comparable to the BMW single VANOS technology . In addition to a better torque in the lower speed range, it primarily reduces the nitrogen oxide levelsby the exhaust gas recirculation effect of a large overlap is used - this already exhaust gas is sucked back into the combustion chamber. In 2008, the CVVT intake camshaft control was extended by one for the output side, resembling BMW's double Vanos technology . The now D (ual) -CVVT named lifted system performance by five horsepower to at 193rd The CVVT is not always listed due to its standardity. For the Kia Cadenza the engine was increased to 200 hp, the changes made were not published. 

The variable intake system (Variable Intake System) of the predecessor has been extended by one level to three. It takes better account of the pulsation of the air in the intake manifold, which results from the opening and closing of the valves. If these negative and positive pressure pulses find a rhythmically adapted path into the engine compartment, a slight resonance charging effect is created, similar to a turbocharger . To achieve the open over the speed range respectively distributed appropriately long air passages, resulting in a consistently high torque.

With the Mu series ends the first V6 series of Hyundai. It is replaced by four-cylinder Theta series .

Technical Data 

Use 

Hyundai grandeur

• Grandeur TG
  • G6EA (188 hp): 2005-2009 (South Korea)
  • G6EA (194 hp): 2009-2010 (South Korea)

Hyundai Santa Fe

• Santa Fe SM
  • G6BA (189 hp): 2005.
• Santa Fe CM
  • G6BA (189 hp): 2006-2010

KIA Cadenza

• Cadenza VG
  • G6EA (200 hp): 2010.
  • L6EA (165 hp): 2010.

KIA Carens

• Carens UN
  • G6EA (188 hp): 2006-2008
  • G6EA (193 hp): 2008-today

KIA Carnival

• Carnival VQ
  • G6EA (188 hp): 2006-2010
  • L6EA (161 hp): 2007-2011

KIA Magentis

• Magentis MG
  • G6EA (188 hp): 2001-2008
  • G6EA (194 hp): 2008-2010

KIA Opirus

• Opirus GH
  • G6EA (188 hp): 2006-2009
  • G6EA (194 hp): 2009-2011

KIA Sorento

• Sorento XM
  • L6EA (161 hp): 2009-2010