Hyundai Beta engine

In series Beta is four-cylinder petrol engines with double overhead camshaft ( DOHC) and four valves per cylinder. The engines are built in Ulsan, and Hwaseong, South Korea. They were developed in Yongin (South Korea) at its headquarters.

The beta series from 1995 added the larger displacements for the 1990 debut, first developed in Korea alpha motor series. Previously, Hyundai built exclusively produced under license Mitsubishi engines.

The engine block is made ​​of cast iron, the cylinder head be made ​​of light metal. Base engine is a 1.6 liter model with 77.4 mm and cylinder bore 85 mm piston stroke at a dry weight of 136 kg. For the 1.8 liter version ( 135.6 kg ), the cylinders were bored out to 82 mm and extended in the 2.0 liter version (144 kg) in addition to 93.5 mm stroke. The latter was filed in 1997. The idle rotation speed is set forth below.

The inlet and exhaust camshafts are connected by a timing chain, the power transmission from the crankshaft to the cylinder head by means of toothed belts. Meanwhile inspection is all 45.000/95.000 km or 48 months its exchange all 100.000/135.000 km or 60 / 72 months provided (models with Premiere before / after 2006 ). The motors are not free runner.

The drive of the ancillary units is carried out by means of three V-belts. Their inspection interval has been shortened from 2006 presented models of 48,000 km / 24 months 15,000 km / 12 months. Your exchange is carried out with decreasing voltage or recognizable wear.

The valve actuation changed from the beta to the beta II series. The inspection of the valve clearance is all 95,000 km or 48 months provided an exchange of the plunger as needed. The Beta II CVVT sometimes develops at slightly over 100,000 km there is a ticking sound resulting from worn tappets. The valve clearance compensation ( cf. II beta, third last paragraph) can therefore be merged as a precaution with the timing belt change at 100,000 km, since both works require similar steps.

Differences to Sirius Range

Before the launch of the beta - series 1995 Hyundai built in this displacement class motors since 1987 the Mitsubishi Sirius series. This was in 1994 developed into the Sirius II series and offered in parallel with beta - engines - especially the notice published in the beta series only in 1997 2.0 and the 2.4 L version there not included. Hyundai models before 2005 with 1.8, 2.0 and 2.4 liters of displacement, which are not found in the list below, therefore, contain a Sirius unit. For KIA this applies only to the Joice (who, like the Hyundai Santamo on the Mitsubishi Space Wagon -based ), and the Magentis and Sorento. The Hyundai engine codes for the 1.8 G4CM ( Sirius ), the 2.0 G4CP, G4JP ( Sirius, Sirius II) and 2.4 G4CS, G4JS ( Sirius, Sirius II).

The differences between Sirus and beta engines start at around 5 kg higher weight of the former. Their overall dimensions are larger in all directions. The timing belt also operates at the Sirius series both camshafts in the beta series only one that the second moving over a horizontal timing chain on the cylinder head.

A special feature of the Sirius II series is their timing belt itself nachspannendem. Beta and Sirius motors feature a statically strained. Same at twice the balance shaft: Also, it is only part of the Sirius II series. Their cylinder head, in turn, prevented the installation of a camshaft adjustment, unlike the suitable Beta II series.

Beta

The development of the first beta series began in 1992 and cost 120 million U.S. dollars. The use of plastic in many parts of cylinder head cover to air filter should on the one hand reduce the weight and on the other hand increase the proportion of recyclable materials. Focus here was the achieving of this demanding, California Environmental Laws of 1996.

The valves are actuated by hydraulic tappets without tilting and rocker arms. This form of the lash adjuster is maintenance-free up to the wear of the hydraulic tappets. This is caused by the removal of the contact surface between the cam and lash adjusters. The distance is initially offset by a spring, which presses the flush plunger top side up. Permanent tick indicates that this is no longer sufficient and the cam no longer constantly present at the lash, but this only reached once per revolution - the emergence produces the ticking sound. When replacing the plunger they are replaced with slightly longer to compensate for the removed cam material. If it fails, the exchange, and the cams are removed strengthened, eventually in a " run-in camshaft " results. Then it would have to be replaced in addition to the tappets. A tick can also be caused by improper oil viscosity or non-compliance with the change intervals. Does the oil channel in the hydraulic tappets about by low oil level is empty, the valve clearance is also too large and the valve can not fully open. A lesser amount of air, which is slightly less power are the result. Even after prolonged shutdown, the noise is possible if the oil channels are idled. This is not a wear characteristic and disappears after a few seconds.

The average per capita real consumption of this series is 9.1 l / 100 km in economical driving style, he is reduced to 7

Problems

On some engines this series on exhaust manifold cracks. This is recognizable thanks to features such as low- passage, irregular running noise, consumption or unusual noise when accelerating. Due to the uncontrolled outflow of exhaust gases before purifying catalyst and following it, now wrong measurements, the engine management controls in too much or too little fuel, which emission standards are then usually not respected (see ). To repair the exhaust manifold has to be replaced, which forms in some models with the catalyst an expensive component. The exchange took place in the DA -CH region of the manufacturer for a maximum of five -year-old vehicles free of charge. For the last affected vehicles, the sign of goodwill, therefore, in 2007 ran out. This affects Hyundai Lantra, Elantra coupe and manufactured from mid- 1998 to 31 January 2002 ( model years 1999 to 2002). The date of manufacture can be found on a sticker in the driver door. With the Beta - II series, the material was fixed resistor, which disappeared Abgaskrümmerproblem.

Beta II

In 2001, the beta - series underwent a number of efficiency-related and noise-reducing measures and was therefore attributable to the beta II The 1.6 L version.

After its debut in 2002, the Hyundai Coupe revised versions replaced in the course of facelifts or Newcomers to date. The last newly published model with Beta II engine is the Kia Soul in non-European markets. Within Europe, it is available only with the 1.6 L versions of the Gamma petrol and U2 diesel series.

The changes to improve the smoothness included a materialüppigere shape of the cylinder block, doubling to eight counterweights for balancing the crankshaft, and a now -aluminum oil pan with a firmer connection to the vehicle. The engine itself has been decoupled better with the change of rubberized to hydraulic storage of the body. In addition, the idle speed was reduced from 850 to 700 revolutions per minute and installs a larger engine cover. The idle speed also increases with active air conditioning at no more 100.

To increase the power of the air filter box was current optimized design and is provided with a heat shield over the engine, making a total of more air can flow. This resulted in a performance increase of 2 percent. The fuel supply was switched for a better torque at low speeds on a return -free system with a higher fuel pressure. This is since 1999 a standard for all new engine series.

A reduction in emissions was achieved with a combustion chamber, optimization, made ​​possible by a precise manufacture of the cylinder head. This must therefore also be sealed twice instead of three times only. Consequently, also valve lift and opening times could be adjusted more precisely. In addition, the hydraulic valve actuator by a massive plunger was replaced without adjustment. In the upper side of a plate ( " shim " ) is inserted, which is after wear exchanged for a new one. Visually and functionally, nothing changed in the above description.

For air flow measurement by a MAF ( mass air flow ) sensor into a MAP sensor (manifold absolute pressure ) was changed.

The average per capita real consumption of this series is 8.5 l / 100 km in economical driving style, he is reduced to 7

Beta II CVVT

In 2003, the 2.0 liter version as the first result of technological cooperation with Daimler- Chrysler as part of the Global Engine Manufacturing Alliance, a CVVT named camshaft adjustment for the intake side. The CVVT varies the opening timing of the intake valves ( 40 ° of a revolution of the crankshaft ), but not the valve and thus the opening period. Thus, it exerts influence on the overlap between intake and exhaust and is comparable to the BMW single Vanos technology.

This addition resulted in a 5 percent fuel savings, and better in the low speed range torque. The performance increased as the maximum torque by 4 percent (see background). Emission- side, particularly nitric oxide levels were reduced by the exhaust gas re- guiding effect is a large overlap used - in this case the discharged exhaust gas is already sucked back into the combustion chamber.

In some models (such as KIA Cerato, Hyundai Elantra ) replaced again a Mass Air Flow (MAF) sensor with the Beta II introduced, indirectly measuring MAP air flow meter. The latter is in the engine compartment of the pro_cee'd above the DOHC lettering recognizable by the black wired component on the silver intake manifold.

In the newly released models since 2006 also the hydraulic power steering system has been replaced by an electrically assisted.

Since 2006, resulting in the GEMA Theta family replaced with new models gradually the Beta series. Only for cost-sensitive models or markets was still resorted to this. In Europe, their use ended with the 2011 model year, as from 2011, the Euro 5 standard was mandatory. In this beta series was no longer adapted.

The average per capita real consumption of this series is 8.9 l / 100 km for low-profile vehicles and 10.3 l / 100 for Softroadern and compact vans. For economical driving style, he reduced accordingly to 7 or 9 l / 100.

Data

Use

Listed are the world's installed Beta engines for each model, not in every country all listed configurations were offered.

Hyundai Coupe

  • Coupe RD/J2 G4GR, G4GMR: 1996-1998
  • G4GF: 1996-2000
  • G4GFS, G4GF - EC: 1999-2001
  • G4GCG -141: 2001-2003
  • G4GCX 2003-2009

Hyundai Lantra

  • Elantra J2/RD G4GR, G4GM: 1996-2000
  • G4GF 1998-2000

Hyundai Elantra

  • Elantra XD G4GM, G4GCG -139, G4GCG -141: 2001-2003
  • G4GB, G4GCX 2003-2006
  • G4GCX: 2007-2011

Hyundai i30

  • I30 FD ( from Korea ) / FDH ( from Czech Republic) G4GCX: 2007 -present (since 2010, sold as the Elantra Touring only for USA)

Hyundai Matrix

  • Matrix FC G4GB: 2001 -present

Hyundai Trajet

  • Trajet FO G4GCG: 2004-2008

Hyundai Tucson

  • Tucson JM G4GCX: 2004-2009

KIA Carens

  • Carens FC G4GC1 2003-2006
  • G4GCX: 2004-2006

KIA cee'd

  • Cee'd ED G4GCX: 2006-2010

KIA Cerato

  • Cerato LD G4GB: 2005 -present (China)
  • G4GC1: 2003-2006 G4GCX 2003-2009

KIA Soul

  • Soul AM G4GCX: 2009-2011

KIA Sportage

  • Sportage JE G4GCX: 2004-2010
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