US6326702B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Output control system for series hybrid vehicle
Assignee: Honda Motor Co Ltd
•
Filing: 1999-12-17
•
Granted: 2001-12-04
•
Expires: 2019-12-17
Abstract
Abstract A system for controlling a series hybrid vehicle, having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle. In the system, a desired engine speed is determined to minimize fuel consumption, and a desired power generation amount of the first generator-motor is determined based on a determined desired power generation base value and the desired engine speed. Then, the throttle opening is controlled to achieve the desired power generation amount, thereby optimizing fuel consumption, while rapidly converging the engine speed on the desired value, without stalling the internal combustion engine.
Inventors
- 👤 Takahiro Yonekura
- 👤 Yusuke Hasegawa
- 👤 Takashi Kakinuma
- 👤 Hiroyuki Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:19
CPC Classifications
B; B60; B60W; B60W10/00; B60W10/04; B60W10/06; B60K; B60K6/00; B60K6/20; B60K6/42; B60K6/46; B60L; B60L50/00; B60L50/50; B60L50/60; B60L50/61; B60W10/08; B60W20/00; B60W20/10; B60W20/11; B60L2240/00; B60L2240/40; B60L2240/42; B60L2240/423; B60W50/00; B60W2050/0001; B60W2050/0002; B60W2050/0008; B60W2050/0011; B60W2710/00; B60W2710/06; B60W2710/0605; B60W2710/0644; B60W2710/08; B60W2710/083; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/70; Y02T10/7072; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
331 words
A system for controlling an output of a series hybrid vehicle, having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising; desired first generator-motor power generation base value determining means for determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; desired engine speed determining means for determining a desired engine speed which the engine is desired to generate; desired first generator-motor power generation amount determining means for determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; desired throttle opening determining means for determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator motor; throttle valve driving means for driving the throttle valve based on the determined throttle opening; and wherein the desired first generator-motor power generation amount determining means includes: engine operating condition detecting means for detecting operating condition of the engine including at least the engine speed generated by the engine; correction value calculating means for calculating a deviation between the detected engine speed and the determined desired engine speed (NECMD) and for calculating a correction value by multiplying a gain by the calculated deviation; and desired first generator-motor power generation amount calculating means for calculating the desired power generation amount of the first generator-motor by adding the correction value to the determined power generation base value.
Claim 2
Independent Claim
331 words
A system for controlling an output of a series hybrid vehicle, having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising; desired first generator-motor power generation base value determining means for determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; desired engine speed determining means for determining a desired engine speed which the engine is desired to generate; desired first generator-motor power generation amount determining means for determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; desired throttle opening determining means for determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator motor; throttle valve driving means for driving the throttle valve based on the determined throttle opening; and wherein the desired first generator-motor power generation amount determining means includes: engine operating condition detecting means for detecting operating condition of the engine including at least the engine speed generated by the engine; correction value calculating means for calculating a deviation between the detected engine speed and the determined desired engine speed (NECMD) and for calculating a correction value by multiplying a gain by the calculated deviation; and desired first generator-motor power generation amount calculating means for calculating the desired power generation amount of the first generator-motor by adding the correction value to the determined power generation base value.
Claim 3
Dependent Claim
23 words
A system according to claim 1 , wherein the desired engine speed determining means determining the desired engine speed to minimize fuel consumption.
Claim 4
Dependent Claim
33 words
A system according to claim 1 , wherein the first generator-motor has an approximately same output capability as the engine such that a capacity of the electric energy storage means is made small.
Claim 5
Dependent Claim
46 words
A system according to claim 1 , wherein the engine is equipped with an EGR system and wherein the desired engine speed determining means includes: determining means for determining whether EGR control is being conducted; and determines the desired engine speed differently depending upon the determination.
Claim 6
Dependent Claim
50 words
A system according to claim 1 , wherein the engine is equipped with an EGR system and wherein the desired throttle opening base value determining means includes: determining means for determining whether EGR control is being conducted; and determines the desired throttle opening base value differently depending upon the determination.
Claim 7
Dependent Claim
71 words
A system according to claim 1 , wherein the engine is equipped with a variable valve timing system and wherein the desired first generator-motor power generation amount determining means includes: determining means for determining whether, when switchover to high-speed side valve timing characteristics is prohibited, the desired power generation amount is achieved without switching to the characteristics; and determines the desired first generator-motor power generation amount separately depending upon the determination.
Claim 8
Dependent Claim
14 words
A system according to claim 1 , wherein the gain is a Proportional gain.
Claim 9
Independent Claim
340 words
A system for controlling an output of a series hybrid vehicle, having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising: desired first generator-motor power generation base value determining means for determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; desired engine speed determining means for determining a desired engine speed which the engine is desired to generate; desired first generator-motor power generation amount determining means for determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; desired throttle opening determining means for determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator motor; throttle valve driving means for driving the throttle valve based on the determined throttle opening; and wherein the desired throttle opening determining means includes: desired throttle opening base value determining means for determining a desired throttle opening base value of the throttle valve; first generator-motor output estimating means for estimating an actual power output of the first generator-motor which the first generator-motor generates; correction value calculating means for calculating a deviation between the estimated power output and the determined desired power generation amount of the first generator-motor and for calculating a correction value by multiplying a gain by the calculated deviation; and desired throttle opening calculating means for calculating the desired throttle opening by adding the correction value to the desired throttle opening base value.
Claim 10
Independent Claim
340 words
A system for controlling an output of a series hybrid vehicle, having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising: desired first generator-motor power generation base value determining means for determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; desired engine speed determining means for determining a desired engine speed which the engine is desired to generate; desired first generator-motor power generation amount determining means for determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; desired throttle opening determining means for determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator motor; throttle valve driving means for driving the throttle valve based on the determined throttle opening; and wherein the desired throttle opening determining means includes: desired throttle opening base value determining means for determining a desired throttle opening base value of the throttle valve; first generator-motor output estimating means for estimating an actual power output of the first generator-motor which the first generator-motor generates; correction value calculating means for calculating a deviation between the estimated power output and the determined desired power generation amount of the first generator-motor and for calculating a correction value by multiplying a gain by the calculated deviation; and desired throttle opening calculating means for calculating the desired throttle opening by adding the correction value to the desired throttle opening base value.
Claim 11
Dependent Claim
21 words
A system according to claim 8 , wherein the gain comprises a Proportional gain, an Integral gain and a Differential gain.
Claim 12
Independent Claim
286 words
A system for controlling an output of a series hybrid vehicle, having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, random a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of a least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising: desired first generator-motor power generation base valve determining means for determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; desired engine speed determining means for determining a desired engine speed which the engine is desired to generate; desired first generator-motor power generation amount determining means for determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; desired throttle opening determining means for determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator motor; throttle valve driving means for driving the throttle valve based on the determined throttle opening; and wherein the desired first generator-motor power generation amount determining means includes: power comparing means for comparing the desired power generation amount with a limit value; and replacing means for replacing the desired power generation amount by the limit value when the desired power generation amount is found to be greater than the limit value.
Claim 13
Independent Claim
286 words
A system for controlling an output of a series hybrid vehicle, having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, random a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of a least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising: desired first generator-motor power generation base valve determining means for determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; desired engine speed determining means for determining a desired engine speed which the engine is desired to generate; desired first generator-motor power generation amount determining means for determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; desired throttle opening determining means for determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator motor; throttle valve driving means for driving the throttle valve based on the determined throttle opening; and wherein the desired first generator-motor power generation amount determining means includes: power comparing means for comparing the desired power generation amount with a limit value; and replacing means for replacing the desired power generation amount by the limit value when the desired power generation amount is found to be greater than the limit value.
Claim 14
Independent Claim
282 words
A method of controlling an output of a series hybrid vehicle having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising the steps of: determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; determining a desired engine speed which the engine is desired to generate; determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator-motor; driving the throttle valve based on the determined throttle opening; and wherein the step of the desired first generator-motor power generation amount determination includes the steps of: detecting operating condition of the engine including at least the engine speed generated by the engine; calculating a deviation between the detected engine speed and the determined desired engine speed (NECMD) and for calculating a correction value by multiplying a gain by the calculated deviation; and calculating the desired power generation amount of the first generator-motor by adding the correction value to the determined power generation base value.
Claim 15
Independent Claim
282 words
A method of controlling an output of a series hybrid vehicle having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising the steps of: determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; determining a desired engine speed which the engine is desired to generate; determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator-motor; driving the throttle valve based on the determined throttle opening; and wherein the step of the desired first generator-motor power generation amount determination includes the steps of: detecting operating condition of the engine including at least the engine speed generated by the engine; calculating a deviation between the detected engine speed and the determined desired engine speed (NECMD) and for calculating a correction value by multiplying a gain by the calculated deviation; and calculating the desired power generation amount of the first generator-motor by adding the correction value to the determined power generation base value.
Claim 16
Dependent Claim
25 words
A method according to claim 11 , wherein the step of the desired engine speed determination determining the desired engine speed to minimize fuel consumption.
Claim 17
Dependent Claim
33 words
A method according to claim 11 , wherein the first generator-motor has an approximately same output capability as the engine such that a capacity of the electric energy storage means is made small.
Claim 18
Dependent Claim
48 words
A method according to claim 11 , wherein the engine is equipped with an EGR system and wherein the step of the desired engine speed determination includes: determining means for determining whether EGR control is being conducted; and determining the desired engine speed differently depending upon the determination.
Claim 19
Dependent Claim
52 words
A method according to claim 11 , wherein the engine is equipped with an EGR system and wherein the step of the desired throttle opening base value determination includes the steps of: determining whether EGR control is being conducted; and determining the desired throttle opening base value differently depending upon the determination.
Claim 20
Dependent Claim
72 words
A method according to claim 11 , wherein the engine is equipped with a variable valve timing system and wherein the step of desired first generator-motor power generation amount determination includes the steps of: determining whether, when switchover to high-speed side valve timing characteristics is prohibited, the desired power generation amount is achieved without switching to the characteristics; and determining the desired first generator-motor power generation amount separately depending upon the determination.
Claim 21
Dependent Claim
14 words
A method according to claim 11 , wherein the gain is a Proportional gain.
Claim 22
Independent Claim
287 words
A method of controlling an output of a series hybrid vehicle having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising the steps of; determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; determining a desired engine speed which the engine is desired to generate; determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator-motor; driving the throttle valve based on the determined throttle opening; and wherein the step of the desired throttle opening determination includes the steps of: determining a desired throttle opening base value of the throttle valve; estimating an actual power output of the first generator-motor which the first generator-motor generates; calculating a deviation between the estimated power output and the determined desired power generation amount of the first generator-motor and for calculating a correction value by multiplying a gain by the calculated deviation; and calculating the desired throttle opening by adding the correction value to the desired throttle opening base value.
Claim 23
Independent Claim
287 words
A method of controlling an output of a series hybrid vehicle having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising the steps of; determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; determining a desired engine speed which the engine is desired to generate; determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator-motor; driving the throttle valve based on the determined throttle opening; and wherein the step of the desired throttle opening determination includes the steps of: determining a desired throttle opening base value of the throttle valve; estimating an actual power output of the first generator-motor which the first generator-motor generates; calculating a deviation between the estimated power output and the determined desired power generation amount of the first generator-motor and for calculating a correction value by multiplying a gain by the calculated deviation; and calculating the desired throttle opening by adding the correction value to the desired throttle opening base value.
Claim 24
Dependent Claim
21 words
A method according to claim 18 , wherein the gain comprises a Proportional gain, an Integral gain and a Differential gain.
Claim 25
Independent Claim
249 words
A method of controlling an output of a series hybrid vehicle having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising the steps of: determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; determining a desired engine speed which the engine is desired to generate; determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator-motor; driving the throttle valve based on the determined throttle opening; and wherein the step of desired first generator-motor power generation amount determination includes the steps of: comparing the desired power generation amount with a limit value; and replacing the desired power generation amount by the limit value when the desired power generation amount is found to be greater than the limit value.
Claim 26
Independent Claim
249 words
A method of controlling an output of a series hybrid vehicle having an internal combustion engine whose output is regulated by a throttle valve, a generator-motor connected to the engine to be rotated by the engine, an electric energy storage means connected to the first generator-motor to be charged by the first generator-motor, and a second generator-motor connected to at least one of the first generator-motor and the electric energy storage means to input an output of at least one of the first generator-motor and the electric energy storage means to drive wheels of the vehicle to propel the vehicle, comprising the steps of: determining a desired power generation base value of the first generator-motor which the first generator-motor is desired to generate; determining a desired engine speed which the engine is desired to generate; determining a desired power generation amount of the first generator-motor which the first generator-motor is desired to generate, based on the determined desired power generation base value and the desired engine speed; determining a desired throttle opening of the throttle valve based on the desired power generation amount of the first generator-motor; driving the throttle valve based on the determined throttle opening; and wherein the step of desired first generator-motor power generation amount determination includes the steps of: comparing the desired power generation amount with a limit value; and replacing the desired power generation amount by the limit value when the desired power generation amount is found to be greater than the limit value.
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