Hyundai Beta engine

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β engine Beta Engine
Overview
Manufacturer	Hyundai Motor Company
Production	1995–2012
Layout
Configuration	Inline-4
Displacement	1.6 L (1,599 cc) 1.8 L (1,795 cc) 2.0 L (1,975 cc)
Cylinder bore	77.4 mm (3.05 in) (1.6L) 82 mm (3.2 in) (1.8L/2.0L)
Piston stroke	85 mm (3.3 inches) (1.6L/1.8L) 93.5 mm (3.68 inches) (2.0L)
Cylinder block material	Cast Iron
Cylinder head material	Aluminum alloy
Valvetrain	Dual Overhead Camshaft (DOHC)
Compression ratio	9.85:1 (1.6L) 10.0:1 (1.8L) 10.3:1 (2.0L)
RPM range
Idle speed	700 ± 100 rpm 800 ± 100 rpm
Combustion
Fuel system	Multipoint Injection
Management	Siemens
Fuel type	Petrol LPG
Oil system	Wet sump
Cooling system	Liquid Cooled
Output
Power output	90–143 PS (66–105 kW; 89–141 hp)
Torque output	12.8–19 kg⋅m (93–137 lb⋅ft; 126–186 N⋅m)
Dimensions
Length	496.4 mm (19.54 in) (2.0L)
Width	600–624.8 mm (23.62–24.60 in) (2.0L)
Height	672–711 mm (26.5–28.0 in) (2.0L)
Dry weight	141.1–151.4 kg (311–334 lb) (2.0L)
Emissions
Emissions control systems	PCV valve Catalytic Converter
Chronology
Predecessor	Mitsubishi Sirius engine
Successor	Theta Nu

The Hyundai Beta engines are 1.6 L to 2.0 L I4 built in Ulsan, South Korea.

All Beta engines are dual overhead camshaft valvetrain (DOHC) design. The Beta engine uses a direct-acting overhead cam valvetrain arrangement which places the camshaft in the cylinder head above the pistons and combustion chamber and operates the valve tappets/lifters directly.

The Beta engine's ignition system is designed to ignite the fuel/air charge that enters each cylinder by producing a high voltage spark at the exact moment for maximum efficiency.

All Beta versions are equipped with a Distributorless Ignition System (DIS). The system consists of the ignition coil assembly, Camshaft Position Sensor (CMP), Powertrain Control Module (PCM), spark plug wires and spark plugs.

The Beta engine family includes the following engine codes: G4GR, G4GB, G4GC, G4GF and G4GM.