INJECTOR-CORRECTING APPARATUS OF A HYBRID ELECTRIC VEHICLE AND A METHOD THEREOF

• US 20150183425A1
• Filed: 11/13/2014
• Published: 07/02/2015
• Est. Priority Date: 12/31/2013
• Status: Abandoned Application

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: CHOI, Kumlim, Koo, Yoonsung
• Application Number:
  US14/540,842
• Publication Number:
  US 20150183425A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60K 2006/4825 Electric machine connected or connectable to gearbox input shaft
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60W 10/02 including control of driveline clutches
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/50 Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
• CPC Class Codes: B60W 2030/18081 With torque flow from driveshaft to engine, i.e. engine being driven by vehicle
• CPC Class Codes: B60W 2030/1809 Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: B60W 30/18072 Coasting
• CPC Class Codes: F02D 2200/021 Engine temperature
• CPC Class Codes: F02D 2200/0606 Fuel temperature
• CPC Class Codes: F02D 2200/501 Vehicle speed
• CPC Class Codes: F02D 2250/24 by using an external load, e.g. a generator
• CPC Class Codes: F02D 2700/07 Automatic control systems according to one of the preceding groups in combination with control of the mechanism receiving the engine power
• CPC Class Codes: F02D 29/02 peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
• CPC Class Codes: F02D 41/1401 characterised by the control or regulation method F02D41/1473, F02D41/1477 take precedence
• CPC Class Codes: F02D 41/2438 Active learning methods
• CPC Class Codes: F02D 41/2441 characterised by the learning conditions
• CPC Class Codes: F02D 41/247 : Behaviour for small quantities
• CPC Class Codes: F02D 41/3017 : characterised by the mode(s) being used
• CPC Class Codes: Y02T 10/60 : Other road transportation technologies with climate change mitigation effect
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles
• CPC Class Codes: Y10S 903/93 : Conjoint control of different elements

Abstract

An injector correcting apparatus of a hybrid electric vehicle may include an engine generating power by combustion of a fuel, a motor supporting power of the engine and selectively operating as a generator, a clutch provided between the engine and the motor, an injector injecting the fuel to a combustion chamber of the engine, a driving information detector detecting driving information of a vehicle including driving distance of the vehicle, vehicle speed, coolant temperature, fuel temperature, and state of charge (SOC) of a battery, and a controller correcting fuel injection by increasing a fuel amount supplied to the combustion chamber step-by-step when a correcting condition of the injector derived from the driving information detected by the driving information detector is satisfied, while the vehicle is coasting.

Claims

1. An injector correcting apparatus of a hybrid electric vehicle, comprising:

an engine generating power by combustion of a fuel;

a motor supporting power of the engine and selectively operating as a generator;

a clutch provided between the engine and the motor;

an injector injecting the fuel to a combustion chamber of the engine;

a driving information detector detecting driving information of the vehicle including driving distance of the vehicle, vehicle speed, coolant temperature, fuel temperature, and state of charge (SOC) of a battery; and

a controller correcting the fuel injection by increasing a fuel amount supplied to the combustion chamber step-by-step when a correcting condition of the injector derived from the driving information detected by the driving information detector is satisfied, while the vehicle is coasting.

2. The injector correcting apparatus of the hybrid electric vehicle of claim 1,

wherein the correcting condition of the injector is satisfied when the vehicle speed is more than a predetermined speed, when the coolant temperature is higher than a predetermined coolant temperature, and when the fuel temperature is higher than a predetermined fuel temperature.

3. The injector correcting apparatus of the hybrid electric vehicle of claim 1,

wherein the controller does not correct the fuel injection of the injector when the SOC is less than a predetermined value detected by the driving information detector, and releases engagement of the clutch, operates the motor as the generator, and charges the battery by the motor.

4. The injector correcting apparatus of the hybrid electric vehicle of claim 1,

wherein the controller corrects the fuel injection of the injector every correcting driving distance.

5. An injector correcting apparatus of a hybrid electric vehicle comprising:

an engine generating power by combustion of a fuel;

an HSG starting the engine and selectively operating as a generator;

a motor supporting power of the engine and selectively operating as another generator;

a clutch provided between the engine and the motor;

an injector injecting the fuel to a combustion chamber of the engine;

a driving information detector detecting driving information of the vehicle including driving distance of the vehicle, vehicle speed, coolant temperature, fuel temperature, and SOC of a battery; and

a controller correcting the fuel injection by increasing a fuel amount supplied to the combustion chamber step-by-step when a forcible correcting condition of the injector is satisfied and a correcting condition of the injector derived from the driving information detected by the driving information detector is satisfied.

6. The injector correcting apparatus of the hybrid electric vehicle of claim 5,

wherein the forcible correcting condition of the injector is satisfied when the driving distance of the vehicle is more than a predetermined forcible driving distance and the fuel injection is not corrected during the forcible driving distance, or when an engine output according to the fuel injection is more than a predetermined range irrespective of the forcible driving distance.

7. The injector correcting apparatus of the hybrid electric vehicle of claim 5,

wherein the correcting condition of the injector is satisfied when the vehicle speed is more than a predetermined speed, when the coolant temperature is higher than a predetermined coolant temperature, and when the fuel temperature is higher than a predetermined fuel temperature.

8. The injector correcting apparatus of the hybrid electric vehicle of claim 5, wherein the controller operates the engine by the HSG and corrects the fuel injection of the injector.

9. An injector correcting method of a hybrid electric vehicle having an engine generating power by combustion of a fuel, a motor supporting power of the engine and selectively operating as a generator, a clutch provided between the engine and the motor, an injector injecting the fuel to a combustion chamber of the engine, a driving information detector detecting driving information of the vehicle, and a controller correcting the injector according to a driving condition of the vehicle, including the controller executing a set of instructions for:

receiving driving information of the vehicle including driving distance of the vehicle, vehicle speed, coolant temperature, fuel temperature, and SOC of a battery;

determining whether a forcible correcting condition of the injector is satisfied;

determining whether the driving distance of the vehicle is higher than a correcting driving distance for correcting the injector when the forcible correcting condition of the injector is not satisfied;

determining whether the vehicle is coasting and the injector correcting condition is satisfied when the driving distance of the vehicle is higher than a correcting driving distance; and

correcting the fuel injection of the injector by using a time of explosion of the fuel in the combustion chamber while increasing a fuel amount injected to the combustion chamber of the engine step-by-step when the injector correcting condition is satisfied.

10. The injector correcting method of the hybrid electric vehicle of claim 9, further comprising:

determining whether the vehicle is coasting and the injector correcting condition is satisfied, when the forcible correcting condition of the injector is satisfied;

determining whether the SOC of the battery is more than a predetermined value; and

correcting the fuel amount injected from the injector when the vehicle is coasting, the injector correcting condition is satisfied, and the SOC is more than the predetermined value.

11. The injector correcting method of the hybrid electric vehicle of claim 9,

wherein the controller corrects the fuel amount injected from the injector by operating the engine through the HSG.

12. The injector correcting method of the hybrid electric vehicle of claim 10, further comprising:

correcting the fuel amount injected from the injector by operating the engine through the HSG when the vehicle is not coasting, the injector correcting condition is satisfied, and the SOC is more than the predetermined value,

13. The injector correcting method of the hybrid electric vehicle of claim 9,

wherein the forcible correcting condition of the injector is satisfied when the driving distance of the vehicle is more than a predetermined forcible driving distance and the fuel injection is not corrected during the forcible driving distance, or when the engine output according to the fuel injection is more than a predetermined range irrespective of the forcible driving distance.

14. The injector correcting method of the hybrid electric vehicle of claim 13,

wherein the correcting driving distance of the injector is less than the forcible driving distance.

15. The injector correcting method of the hybrid electric vehicle of claim 9,

wherein the injector correcting condition is satisfied when the coolant temperature is higher than a predetermined coolant temperature and the fuel temperature is higher than a predetermined fuel temperature.

16. The injector correcting method of hybrid electric vehicle of claim 9,

wherein the controller does not correct the fuel injection of the injector when the SOC is less than a predetermined value detected by the driving information detector, and releases engagement of the clutch, operates the motor as a generator, and charges the battery by the motor.

17. The injector correcting method of the hybrid electric vehicle of claim 10,

wherein the injector correcting condition is satisfied when the coolant temperature is higher than a predetermined coolant temperature and the fuel temperature is higher than a predetermined fuel temperature.