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Hyundai Beta engine

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      Beta engine
Overview
ManufacturerHyundai Motor Company
Production1995-present
Layout
Configurationinline engine
Displacement1.6L (1595 cc)
1.8L (1836 cc)
2.0L (1975 cc)
Cylinder bore82.3 mm (3.240 in.) (1.6L)
81.5 mm (3.209 in.) (1.8L)
Piston stroke75.0 mm (2.953 in.)(1.6)
88 mm (3.465 in.) (1.8L)
Cylinder block materialAluminum
Cylinder head materialAluminum
ValvetrainDOHC
Compression ratio9.2 (1.6L & 1.8L)
Combustion
Fuel typepetrol gasoline
Output
Power output116 hp (85 kW) @ 6000 rpm (1.6L)
130 hp (96 kW) @ 6000 rpm (1.8L)
140 hp (102 kW) @ 6000 rpm (2.0L)
Torque output106 lb·ft (143 Nm) @ 4900 rpm (1.6L)
126 ft.lb (170 Nm) @ 4200 rpm (1.8L)
133 ft.lb (180 Nm) @ 4800 rpm (2.0L)
Dimensions
Dry weight136 kg (1.6L)
135,6 kg (1.8L)
144 kg (2.0L)
Chronology
SuccessorTheta

The Hyundai Beta engine is a 1.6 L to 2.0 L straight-4 built in Ulsan, South Korea. All Beta engines are DOHC designs.

1.6

The G4GR (also called the 1.6 D) is a 1.6 L 1595 cc (97.3 cu. in.) 4 cylinder DOHC engine. Output is 116 hp (85 kW) at 6000 rpm and 106 lb·ft (143 Nm) at 4900 rpm. The engine's bore is 82.3 mm (3.240 in.) and its stroke is 75.0 mm (2.953 in.). Its horsepower net is 66 kW / 90 PS / 89 hp (ECE) and a torque net of 126 Nm / 93 ft-lb

1.8

The G4GM (also called the 1.8 D) is a 1.8 L 1836 cc (112.04 cu. in.) DOHC engine with a 81.5 mm (3.209 in.) and a 88 mm (3.465 in.) stroke. Output is up to 130 hp (96 kW) at 6000 rpm and 126 ft.lb of torque (170 Nm) at 4200 rpm. Its first appearance was in the 1996 [[Hyundai Elantra |Lantra]].

2.0

The G4GF (also called the 2.0 D) is the 2.0L (1975cc) version, having debuted in 1997 as the uplevel engine for the original Hyundai Tiburon. It shares the larger 82 mm bore of the 1.8 but is stroked to 93.5 mm. It has a cast iron engine block and aluminum DOHC cylinder head. It uses MFI fuel injection, has 4 valves per cylinder and features powdered cast steel connecting rods. OPA Output is 140 hp (102 kW) at 6000 rpm and 133 pound force-feet (180 N⋅m)

Beta II

During 2001-2002, the new Beta II (G4GC) engine made its debut in models such as the XD Elantra and GK Tiburon. Output is 138 hp (102 kW) at 6000 rpm with 136 pound force-feet (184 N⋅m) of torque (184 N·m) at 4500 rpm[citation needed]. It has a cast iron engine block and aluminum DOHC cylinder heads. The latest version of the 2.0L Beta engine (G4GC) features CVVT, which exists only on the intake side, a first for Hyundai/Kia. The following changes were noted.

  • Redesigned block with external contouring of cylinder bores (instead of flat sides), extra ribbing and one extra transaxle fixing point (now 5)(less NVH)
  • Crankshaft now has 8 counterweights instead of 4.(NVH)
  • Cast & ribbed aluminium sump pan (instead of pressed steel sheet) with stronger joint to transaxle (NVH)
  • Reshaped combustion chambers, ports & pistons (performance, [fuel] economy, emissions)
  • 20 mm (0.8 in) longer intake rams, 8% smaller surge tank, resonator added, spark timing and valve lift optimized, lighter valve springs, denser conrod bearings, returnless fuel system (instead of return type) with higher fuel pressure and smaller injectors (torque spread and economy)
  • Cylinder head machined to more precise tolerances
  • Head gasket now 2-layer (instead of 3)
  • Idle speed reduced to 700 rpm from 800 rpm (NVH)
  • Hydraulic engine mounts (4) instead of rubber (NVH)
  • Heat shield installed between engine and air filter, reducing heating of induction air.
  • New camcover with I-piece high-specific gravity polypropylene baffle (ilo 2-piece pp)
  • Oil flow reduced (economy)
  • Mechanical valve lash adjusters (solid lifters) replace hydraulic, improving valve clearance precision (durability).
  • Lower valve spring load reduces valve train friction (performance).
  • Engine cover installed (NVH and dress up engine bay)
  • Catalytic converter now upstream adjoining exhaust manifold (ilo under car) (emissions)
  • Other detail changes to: alternator, intake manifold brace, power steering & a/c pulleys, idle speed actuator, oil filler cap & drive plate between engine & torque converter [1]

In 2008 the Beta II was modified to produce 142 horsepower (106 kW) and 137 lb⋅ft (186 N⋅m) of torque.

Applications

See also

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