ENGINE WARM-UP SYSTEM

• Main Authors: AKIYAMA HIROSHI, KASUYA YUJI
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2019
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

To more efficiently warm up an engine.SOLUTION: An engine warm-up system 100 includes: an intake flow passage 18; an electric supercharger 22; an exhaust flow passage 20; an EGR flow passage 33; an exhaust control valve 32 for opening/closing the exhaust flow passage; an EGR valve 35 for opening/closing the EGR flow passage; an intake valve 12 and an exhaust valve 13 for an engine 1; an intake/exhaust valve control section 114 for performing opening control of the intake valve and the exhaust valve when the engine is stopped; an electric supercharger control section 128 for driving the electric supercharger when a predetermined engine warming-up execution condition is satisfied; and valve control sections 120, 122 for controlling the exhaust control valve and the EGR valve. The valve control sections close the exhaust control valve and the EGR valve when the engine warming-up execution condition is satisfied, and controls the EGR valve so as to drive the electric supercharger in a predetermined driving region when a predetermined engine warming-up circulation condition is satisfied.SELECTED DRAWING: Figure 1 【課題】エンジンをより効率よく暖機する。【解決手段】エンジン暖機システム１００は、吸気流路１８と、電動過給機２２と、排気流路２０と、ＥＧＲ流路３３と、排気流路を開閉する排気制御バルブ３２と、ＥＧＲ流路を開閉するＥＧＲバルブ３５と、エンジン１の吸気バルブ１２および排気バルブ１３と、エンジンが停止する際に、吸気弁および排気弁を開放制御する吸排気バルブ制御部１１４と、所定のエンジン暖機実行条件が成立すると、電動過給機を駆動させる電動過給機制御部１２８と、排気制御バルブとＥＧＲバルブとを制御するバルブ制御部１２０、１２２と、を備える。また、バルブ制御部は、エンジン暖機実行条件が成立すると、排気制御バルブおよびＥＧＲバルブを閉鎖し、所定のエンジン暖機循環条件が成立すると、電動過給機を所定の駆動領域で駆動させるように、ＥＧＲバルブを制御する。【選択図】図１