# US 2017/0282901 A1 · Control system for vehicle

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- Number: US 2017/0282901 A1
- Document ID: US20170282901A1
- Status: Published application
- Kind: A1
- Application number: 15/465,734
- Filed: 2017-03-22
- Published: 2017-10-05
- Earliest claimed: 2016-03-30
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Tatsuya IMAMURA; Atsushi TABATA
- Web page: https://patentgrep.com/patent/US20170282901A1

## CPC

- B60W 20/15: Control strategies specially adapted for achieving a particular effect
- B60K 6/445: Differential gearing distribution type
- B60W 10/06: including control of combustion engines
- B60W 10/08: including control of electric propulsion units, e.g. motors or generators
- B60W 20/17: for noise reduction
- B60W 30/188: Controlling power parameters of the driveline, e.g. determining the required power
- F02D 41/0007: {for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12)}
- F02D 41/005: {according to engine operating conditions}
- F02D 41/107: {and deceleration}
- F02D 41/3005: {Details not otherwise provided for}
- B60W 2510/0628: Inlet air flow rate
- B60W 2510/0633: Turbocharger state
- B60W 2510/0666: Engine power
- B60W 2510/08: Electric propulsion units
- B60W 2540/10: Accelerator pedal position
- B60W 2710/06: Combustion engines, Gas turbines
- B60W 2710/0633: Inlet air flow rate
- B60W 2710/0638: Turbocharger state
- B60W 2710/0677: Engine power
- B60W 2710/086: Power
- F02D 2200/025: Engine noise, e.g. determined by using an acoustic sensor
- F02D 2200/0406: Intake manifold pressure
- F02D 2200/1004: Estimation of the output torque
- Y02T 10/12: Improving ICE efficiencies
- Y02T 10/40: Engine management systems
- Y02T 10/62: Hybrid vehicles
- Y10S 903/93: Conjoint control of different elements
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A control system for a vehicle includes an electronic control unit. The electronic control unit is configured to i) calculate a target supercharging pressure of an intake air such that, when an internal combustion engine is operated through the homogeneous charge compression ignition, the internal combustion engine achieves a required output while satisfying a predetermined requirement, ii) control an output of the internal combustion engine such that the output approaches the required output in accordance with an actual supercharging pressure in process of changing the actual supercharging pressure to the target supercharging pressure that is achieved by a supercharger, and iii) control a rotary machine such that an output of the rotary machine compensates for part or all of a differential output between the required output and the output in process of changing the actual supercharging pressure to the target supercharging pressure.

## Claims

### Claim 1

A control system for a vehicle, the vehicle including an internal combustion engine, a supercharger, a power transmission system, and a rotary Machine, the internal combustion engine being configured to perform homogeneous charge compression ignition operation, the supercharger being configured to supercharge intake air into the internal combustion engine, the power transmission system being configured to transmit a power of the internal combustion engine to a drive wheel of the vehicle, the rotary machine coupled to the drive wheel so as to transmit a power to the drive wheel, the control system comprising:
an electronic control unit configured to
i) calculate a target supercharging pressure of the intake air such that, when the internal combustion engine is operated through the homogeneous charge compression ignition, the internal combustion engine achieves a required output of the internal combustion engine while satisfying a predetermined requirement,
ii) control an output of the internal combustion engine such that the output of the internal combustion engine approaches the required output in accordance with an actual supercharging pressure in process of changing the actual supercharging pressure to the target supercharging pressure that is achieved by the supercharger, and
iii) control the rotary machine such that an output of the rotary machine compensates for part or all of a differential output between the required output and the output of the internal combustion engine in process of changing the actual supercharging pressure to the target supercharging pressure.

### Claim 2 (depends on 1)

The control system according to claim 1, wherein the electronic control unit is configured to control the output of the internal combustion engine such that the output of the internal combustion engine approaches the required output While the predetermined requirement is satisfied in accordance with the actual supercharging pressure in process of changing the actual supercharging pressure to the target supercharging pressure that is achieved by the supercharger.

### Claim 3 (depends on 1)

The control system according to claim 1, wherein the electronic control unit is configured to control a fuel injection amount of the internal combustion engine such that the output of the internal combustion engine approaches the required output while the predetermined requirement is satisfied in accordance with the actual supercharging pressure in process of changing the actual supercharging pressure to the target supercharging pressure that is achieved by the supercharger.

### Claim 4 (depends on 1)

The control system according to claim 1, wherein the predetermined requirement is a requirement for reducing knocking associated with an increase in the output of the internal combustion engine at a time when the internal combustion engine is operated through the homogeneous charge compression ignition.

### Claim 5 (depends on 1)

The control system according to claim 1, wherein the predetermined requirement is a requirement for reducing a misfire associated with a reduction in the output of the internal combustion engine at a time when the internal combustion engine is operated through the homogeneous charge compression ignition.

### Claim 6 (depends on 1)

The control system according to claim 1, wherein
the vehicle includes an exhaust gas recirculation device configured to recirculate part of exhaust gas, flowing through an exhaust passage of the internal combustion engine, to an intake passage of the internal combustion engine,
the electronic control unit is configured to calculate a target exhaust gas recirculation rate of the exhaust gas recirculation device on the basis of the target supercharging pressure, and
the electronic control unit is configured to control the output of the internal combustion engine such that the output of the internal combustion engine approaches the required output in accordance with the actual supercharging pressure and an actual exhaust gas recirculation rate in process of changing the actual exhaust gas recirculation rate to the target exhaust gas recirculation rate that is achieved by the exhaust gas recirculation device.

### Claim 7 (depends on 1)

The control system according to claim 1, wherein the electronic control unit is configured to, at a time when the required output of the internal combustion engine is changed as a result of a change in required driving output of the vehicle through driver's operation, control the rotary machine such that the output of the rotary machine compensates for the differential output between the required output and the output of the internal combustion engine.

### Claim 8 (depends on 1)

The control system according to claim 1, wherein the electronic control unit is configured to, at a time when the required output of the internal combustion engine is changed as a result of a change of a request from a hybrid system regarding an operation of the internal combustion engine, control the rotary machine such that the output of the rotary machine compensates for the differential output between the required output and the output of the internal combustion engine.

### Claim 9 (depends on 8)

The control system according to claim 8, wherein
the vehicle includes an electrical storage device configured to exchange electric power with the rotary machine, and
the request from the hybrid system regarding the operation of the internal combustion engine is a request to charge the electrical storage device.

### Claim 10 (depends on 1)

The control system according to claim 1, wherein
the power transmission system includes a transmission device that is provided between the internal combustion engine and the rotary machine and that has a shift function,
the electronic control unit is configured to control a shift of the transmission device, and
the electronic control unit is configured to, when the output of the rotary machine compensates for the differential output, restrict a shift of the transmission device.