CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

• Main Authors: ICHIKAWA KOJI, YOSHIDA TAKUHIRO, KITAGAWA MASAYA, UCHIDA TAKAHIRO, KUBO MASAYA, IDOGAWA MASANAO, TAKAOKA TOSHIO
• Format: Patent
• Language: English; Japanese
• Published: 14.09.2023
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; BLASTING; COMBUSTION ENGINES; CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TRANSPORTING; VEHICLES IN GENERAL; WEAPONS

To suppress increasing of an internal pressure of a fuel storage tank, while suppressing an occurrence of a vapor lock in a fuel supply system.SOLUTION: A control device of an internal combustion engine according to the invention, is to control an internal combustion engine including a fuel pump which pumps fuel from a fuel storage tank of a vehicle to a fuel supply system, and a closure valve provided between the fuel storage tank and a canister. When the closure valve is opened with a vapor concentration within the fuel storage tank being high, a target internal pressure of the fuel storage tank is set to decrease by a predetermined decompression amount every predetermined times, and the closure valve is opened so that an internal pressure comes into the target internal pressure. When the closure valve is opened with the vapor concentration within the fuel storage tank being high and a sensor related to a setting of the target internal pressure having abnormality, the target internal pressure is set to decrease by a second decompression amount less than the decompression amount every predetermined times.SELECTED DRAWING: Figure 11 【課題】燃料タンクの内圧の上昇を抑えつつ、燃料供給系統でベーパーロックが発生するのを抑制する。【解決手段】本開示の内燃機関の制御装置は、車両の燃料タンクから燃料供給系統に燃料を圧送する燃料ポンプと、燃料タンクとキャニスタとの間に配置された封鎖弁とを含む内燃機関を制御するものであり、燃料タンク内のベーパー濃度が高くなっている状態で封鎖弁を開弁させるときに、燃料タンクの目標内圧を所定時間おきに予め定められた減圧量だけ低下するように設定すると共に内圧が目標内圧になるように封鎖弁を開弁させ、燃料タンク内のベーパー濃度が高くなっており、かつ目標内圧の設定に関連するセンサに異常が発生している状態で封鎖弁を開弁させるときに、目標内圧を所定時間おきに減圧量よりも小さい第２の減圧量だけ低下するように設定する。【選択図】図１１