HỆ THỐNG ESA (electronic spark advance)

Diagnosis Technician >> Gasoline Engine Control System >> ESA Description Ignition timing (advanced angle) Description High Engine speed Amount of intake air (Manifold pressure) High ESA map (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Description Construction IDL Air flow meter Throttle position sensor VG ECU PIM KNK G IGT IGF Ignition coil with igniter THW NE Manifold pressure sensor Camshaft position sensor OX1A Oxygen sensor No.1 Water temperature sensor Knock sensor Crankshaft position sensor (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Description Construction IDL Air flow meter Throttle position sensor VG ECU PIM KNK G IGT IGF Ignition coil with igniter THW NE Manifold pressure sensor Camshaft position sensor OX1A Oxygen sensor No.1 Water temperature sensor Knock sensor Crankshaft position sensor (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Description Construction IDL Air flow meter Throttle position sensor VG ECU PIM KNK G IGT IGF Ignition coil with igniter THW NE Manifold pressure sensor Camshaft position sensor OX1A Oxygen sensor No.1 Water temperature sensor Knock sensor Crankshaft position sensor (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Description Construction IDL Air flow meter Throttle position sensor VG ECU PIM KNK G IGT IGF Ignition coil with igniter THW NE Manifold pressure sensor Camshaft position sensor OX1A Oxygen sensor No.1 Water temperature sensor Knock sensor Crankshaft position sensor (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Ignition Circuitry Description Ignition coil with igniter ECU Constant voltage circuit +B IGT Drive circuit G Microprocessor NE IGF signal generation circuit IGF Spark plug ECU Ignition coil with igniter Ignition order IGT1 IGT3 IGT4 IGT2 IGF No.1 cylinder No.3 cylinder No.4 cylinder No.2 cylinder DIS (Direct Ignition System) IGT1 ON OFF IGT3 ON OFF IGT4 ON OFF IGT2 ON OFF IGF ON OFF (1/1) REFERENCE: Distributor Type Ignition Circuitry Diagnosis Technician >> Gasoline Engine Control System >> ESA Ignition Circuitry IGT and IGF Signal 1.IGT signal/ 2.IGF signal TDC TDC TDC Ignition IGT 180° (4 cylinders) 120° (6 cylinders) Ignition TDC IGT Advance angle Initial ignition timing 5°, 7° or 10° BTDC (depending on engine model) Ignition order IGT1 ON OFF IGT3 ON OFF IGT4 ON OFF IGT2 ON OFF IGF ON OFF (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA 1.Starting ignition control/ 2.After-start ignition control Outline of Ignition Timing Control At starting Initial ignition timing angle Basic ignition advance angle After starting Corrective ignition advance angle Actual ignition timing Ignition timing control Starting ignition control Initial ignition timing angle After-start ignition control Initial ignition timing angle Basic ignition advance angle Warm-up correction Corrective Over-temperature correction ignition Stable idling correction advance control Knocking correction Other correction Maximum and minimum advance angle control (1/1) REFERENCE: Initial Ignition Timing Angle Judgment Diagnosis Technician >> Gasoline Engine Control System >> ESA Starting Ignition Control and After-start Ignition Control Control of ESA 1.Starting ignition control/ 2.After-start ignition control Engine ECU Microprocessor Back-up IC G NE IGT Initial ignition timing angle signal generation circuit Back-up IC G NE Microprocessor Engine ECU Various signals (VG, PIM etc.) IGT (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Basic Ignition Advance Angle 1.Control when the IDL signal is ON/ 2.Control when the IDL signal is OFF Basic ignition advance angle A/C on (some models only) Engine speed High Ignition timing (advanced angle) Low High Amount of intake air (Manifold pressure) Engine speed High ESA map (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Advance angle 80* (140) Coolant temperature °C (°F) *Depending on engine model Advance angle 1.Warm-up correction/ 2.Over-temperature correction Corrective Ignition Advance Control -5 100* (230) Coolant temperature °C (°F) *Depending on engine model (1/4) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Corrective Ignition Advance Control 3.Stable idle correction Retard angle Advance angle Minus Plus Difference from target idle speed (2/4) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Corrective Ignition Advance Control 4.Knocking correction Advance angle Weak Engine knocking Strong Engine knocking occurs Timing retarded Timing advanced Engine knocking stops (3/4) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Corrective Ignition Advance Control 5.Other correction (4/4) Diagnosis Technician >> Gasoline Engine Control System >> ESA Maximum and Minimum Advance Angle Control Control of ESA Maximum advance angle 35° ∼ 45° Minimum advance angle -10° ∼ 0° Advance angle = Basic ignition advance angle + Corrective ignition advance angle (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Ignition Timing Inspection Initial ignition timing angle Fixed ignition advance angle Standard ignition timing angle E1 TE1 E1 TC DLC1 TE1 DLC2 DLC3 CG Engine model Initial ignition timing Fixed ignition Standard advance angle ignition timing Type 10° BTDC 0° BTDC 10° BTDC Type 5° BTDC 5° BTDC 10° BTDC Type 7° BTDC 0° BTDC 7° BTDC (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Diagnosis Technician >> Gasoline Engine Control System >> ESA Ignition Circuitry Distributor Type Ignition Circuitry Distributor Igniter Ignition coil No.1 cylinder IGT No.3 cylinder ECU IGF No.4 cylinder High-tension code No.2 cylinder (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Initial Ignition Timing Angle Judgement Timing rotor Point A Point B Point A G signal G signal timing rotor and G pickup coil G Point B 5°, 7° or 10° BTDC 5°, 7° or 10° BTDC NE NE signal timing rotor and NE pickup coil 5°, 7° or 10° BTDC NE TDC signal Ignition Ignition IGT IGT with initial ignition timing IGT with timing advanced (1/1) [...]... Engine Control System >> ESA Control of ESA Advance angle 1 0 80* (140) Coolant temperature °C (°F) *Depending on engine model 2 Advance angle 1.Warm-up correction/ 2.Over-temperature correction Corrective Ignition Advance Control 0 -5 100* (230) Coolant temperature °C (°F) *Depending on engine model (1/4) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Corrective Ignition... (2/4) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Corrective Ignition Advance Control 4.Knocking correction Advance angle 4 0 Weak Engine knocking Strong Engine knocking occurs Timing retarded Timing advanced Engine knocking stops (3/4) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Corrective Ignition Advance Control 5.Other correction (4/4)... Diagnosis Technician >> Gasoline Engine Control System >> ESA Maximum and Minimum Advance Angle Control Control of ESA Maximum advance angle 35° ∼ 45° Minimum advance angle -10° ∼ 0° Advance angle = Basic ignition advance angle + Corrective ignition advance angle (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Ignition Timing Inspection Initial ignition timing angle... Technician >> Gasoline Engine Control System >> ESA Diagnosis Technician >> Gasoline Engine Control System >> ESA Ignition Circuitry Distributor Type Ignition Circuitry Distributor Igniter Ignition coil No.1 cylinder IGT No.3 cylinder ECU IGF No.4 cylinder High-tension code No.2 cylinder (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Initial Ignition Timing Angle Judgement ... Technician >> Gasoline Engine Control System >> ESA Control of ESA Basic Ignition Advance Angle 1.Control when the IDL signal is ON/ 2.Control when the IDL signal is OFF Basic ignition advance angle... Gasoline Engine Control System >> ESA Control of ESA Corrective Ignition Advance Control 5.Other correction (4/4) Diagnosis Technician >> Gasoline Engine Control System >> ESA Maximum and Minimum Advance... of intake air (Manifold pressure) Engine speed High ESA map (1/1) Diagnosis Technician >> Gasoline Engine Control System >> ESA Control of ESA Advance angle 80* (140) Coolant temperature °C (°F)