Controller of hybrid vehicle

• US 20040026928A1
• Filed: 04/15/2003
• Published: 02/12/2004
• Est. Priority Date: 10/23/2000
• Status: Active Grant

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Sato, Toshiyuki, Matsubara, Atsushi, Takahashi, Hideyuki, Wakashiro, Teruo, Nakamoto, Yasuo, Kamo, Tomoharu
• Granted Patent: US 6,953,021 B2
• Time in Patent Office: Days
• US Class Current: 290/40C
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60K 6/485 Motor-assist type
• CPC Class Codes: B60K 6/543 the transmission being a continuously variable transmission
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/18 including control of braking systems
• 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 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 2555/20 Ambient conditions, e.g. wind or rain
• CPC Class Codes: B60W 2710/0605 Throttle position
• CPC Class Codes: B60W 30/18127 Regenerative braking
• CPC Class Codes: F01L 1/022 Chain drive
• CPC Class Codes: F01L 1/267 with means for varying the timing or the lift of the valves
• CPC Class Codes: F01L 2303/01 Tools for producing, mounting or adjusting, e.g. some part of the distribution
• CPC Class Codes: F01L 2305/00 Valve arrangements comprising rollers
• CPC Class Codes: F01L 2800/00 Methods of operation using a variable valve timing mechanism
• CPC Class Codes: F01L 2800/13 Throttleless
• CPC Class Codes: F02D 13/04 using engine as brake
• CPC Class Codes: F02D 17/02 Cutting-out cutting-out engines in multiple engine arrangements F02D25/04
• CPC Class Codes: F02D 2041/0012 with selective deactivation of cylinders
• CPC Class Codes: F02D 2200/0406 : Intake manifold pressure
• CPC Class Codes: F02D 2200/0802 : Temperature of the exhaust gas treatment apparatus
• CPC Class Codes: F02D 2250/41 : Control to generate negative pressure in the intake manifold, e.g. for fuel vapor purging or brake booster
• CPC Class Codes: F02D 41/0087 : Selective cylinder activation, i.e. partial cylinder operation deceleration cut-off F02D41/123
• CPC Class Codes: F02D 41/123 : the fuel injection being cut-off
• CPC Class Codes: F02N 11/006 : using a plurality of electric motors
• CPC Class Codes: F02N 11/0818 : Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
• CPC Class Codes: F02N 11/10 : Safety devices F02N11/08 takes precedence
• CPC Class Codes: F02N 2200/023 : Engine temperature
• CPC Class Codes: Y02T 10/40 : Engine management systems
• CPC Class Codes: Y02T 10/62 : Hybrid vehicles

Abstract

A control device for a hybrid vehicle having an engine and a motor as driving sources for the vehicle, and when decelerating, the control device stops the fuel supply to the engine and generates energy by regenerative braking. The engine is a cylinder pause-type engine which is capable of switching between the all-cylinder driving state in which all of cylinders are operating, and a cylinder paused driving state in which all of the cylinders are paused, and the control device of the hybrid vehicle comprises a cylinder pause state determination device for determining whether the engine is in the all cylinder driving state or in a cylinder paused driving state and a regeneration amount supplementing device for supplementing the regeneration energy by the motor by use of the increment of the regeneration energy obtained during the cylinder pausing operation than that obtained during all cylinder driving state.

Claims

1. A control device for a hybrid vehicle having an engine and a motor as driving sources of the vehicle, the motor stops assisting the output of the engine when the vehicle is decelerating, and said motor generates energy by regeneration braking depending upon the deceleration state, and said engine is a cylinder pause-type engine and which is capable of switching between the all-cylinder driving state, in which all of the cylinders are operating, and a cylinder paused driving state, in which at least one cylinder is paused, the device comprising:

a cylinder pause state determination device for determining whether the engine is in the all-cylinder driving state or in a cylinder paused driving state; and

a regeneration amount supplementing device for supplementing regenerative energy using deceleration energy obtained during the cylinder paused driving for the all-cylinder driving when the cylinder paused state is detected by said cylinder pause state detecting device and the engine is driven in the cylinder paused driving state.

2. A control device for a hybrid vehicle according to claim 1, wherein said control device prohibits the cylinder paused driving when the negative pressure in the brake master power cylinder exceeds a threshold value and approaches atmospheric pressure.

3. A control device for a hybrid vehicle according to claim 1, wherein the cylinder paused state is attained by closing both of the air intake valve and the exhaust valve of each cylinder.

4. A control device for a hybrid vehicle according to claim 1, wherein the cylinder pausing operation by said cylinder pause state determination device is to pause all cylinders.

5. A control device for a hybrid vehicle according to claim 1, wherein the number of cylinders which enter in the cylinder pausing operation is more than one-half of all cylinders.

6. A control device for a hybrid vehicle according to claim 1, wherein said cylinder pausing operation is performed by closing both air intake valve and the exhaust valve of each cylinder by each hydraulic-type variable valve timing mechanisms, and the oil pressure control device for supplying the oil pressure to said variable valve timing mechanism is disposed at a position which is the outermost position from a cylinder not executing the cylinder pausing operation.

7. A control device for a hybrid vehicle according to claim 1, wherein said cylinder paused state is attained by closing one of the air intake valve and the exhaust valve of each cylinder.

8. A control device for a hybrid vehicle according to claim 1, wherein, when an anomalous state is detected in at least one of said oil control devices or said variable valve timing mechanisms, said control device stops fuel supply for cylinders connected to the anomalous oil control device or the anomalous variable valve timing mechanism.