T UCSON (JM) ENGINE

ENGINE

Chapter 1. Engine Introduction

1. Engine variation

Engine	Area
	N/America	Europe	General	Australia
2.0ℓ Gasoline (β-II) (CVVT)	●	●	●	●
2.7ℓ Gasoline (δ) (VIS)	●	●	●	●
2.0ℓ Diesel (D)		●	●

2. Engine description

TUCSON equips 3 kinds engine 2.0L Beta-II DOHC engine, 2.7L Delta engine and 2.0L D engine. Among them, Beta and Delta engines are gasoline engine, D engine is diesel engine with common rail.

All of TUCSON engine is already introduced in Hyundai motors.

The features of Beta-II engine are as follows

• MLA (Mechanical Lash Adjuster) valve mechanism

• Timing belt, Timing chain

• Returnless fuel system

• Distributorless ignition system

• Ignition timing control with knock sensor

• ECM is integrated with TCM

• Siemens EMS

The features of Beta-II engine are as follows

• HLA(Hydraulic Lash Adjuster) valve mechanism

• Timing belt, Timing chain

• Returnless fuel system

• Distributorless ignition system

• Ignition timing control with knock sensor

• 2 valve VIS(Variable Intake System)

• Siemens EMS

Beta engine equips CVVT (Continuously Variable Valve Timing) system to improve performance and to reduce the emission.

3. Specification

Items	Unit	2.0 Beta-II DOHC	2.7 Delta V6
Total displacement	cc	1975	2656
Bore X Stroke	mm	82 X 93.5	86.7 X 75
Compression ratio		10.1.:1	10:1
Number of valves		DOHC 16 valves	DOHC 24 valves
Firing order		1-3-4-2	1-2-3-4-5-6
Valve lash adjuster		MLA	HLA
Idle rpm	rpm	700±100	700±100
Ignition timing	º	BTDC 8º±5º	BTDC 12º±5º
Ignition system		DLI	DLI
Fuel system		Returnless	Return
Fuel pressure	Kg/cm²	3.5	3.5
Cooling control		Inlet	Intlet
EMS		SIEMENS	SIEMENS

Chapter 2. Engine Mechanical

1. BETA-II Engine (2.0L)

1.1 Overview

Engine Room

Front view

Left view

Right view

Rear view

1.2 Timing belt and chain

Installation procedure for timing chain

1. Align the camshaft timing chain with the intake timing chain sprocket and exhaust timing chain sprocket as below.

2. Install the camshaft and the bearing caps.

Installation procedure for timing belt

1. Align the timing marks of the camshaft sprocket and crankshaft sprocket with the No. 1 piston placed at top dead center and its compression stroke.

2. Install the timing belt tensioner and idler pulley.

3. Install the timing belt on the camshaft.

[NOTE]

When the timing belt is installed on the camshaft sprocket, make sure that the tension side is tightened by pushing the timing belt tensioner pulley toward the water pump.

4. Turn the crankshaft one turn in the operating direction (clockwise) and realign crankshaft sprocket timing mark.

[CAUTION]

Do not turn the crankshaft in a counterclockwise direction. The crankshaft should be turned smoothly.

5. Tighten Tensioner and idler pulley

(Tightening torque : 43-55 Nm (430-550 kg.cm, 32-41 lb.ft)

6. Recheck the belt tension. When the tension side of timing belt is pushed horizontally with a moderate force [approx. 2kg (20N, 5lb)], the timing belt cog end sags in approx. 4-6 mm (0.16 - 0.24 in.)