Control device for internal combustion engine
Abstract
Abstract Translated from Japanese (57)【要約】 【課題】 機関暖機中の安定度限界制御による点火時期 の遅角にかかわらず、空燃比を適正に制御して、触媒の 早期活性化による転化率向上等を図る。 【解決手段】 燃料噴射量TIを算出し(S1)、点火 時期ADVを算出するが(S2)、機関暖機中は(S 3)、機関の回転変動を検出し、安定度限界となるよう に点火時期ADVを遅角側に補正する(S4)。そし て、安定度限界制御による点火時期の遅角量と、水温 と、燃料性状(重軽質)とに基づいて、機関の入口A/ Fに対する出口A/Fのリーン量を算出する(S5)。 そして、このリーン量に基づいて、燃料噴射量TIを増 大側に補正する(S6)。 (57) [Abstract] [PROBLEMS] To properly control the air-fuel ratio regardless of the retard of the ignition timing by the stability limit control during engine warm-up to improve the conversion rate by early activation of the catalyst. SOLUTION: A fuel injection amount TI is calculated (S1) and an ignition timing ADV is calculated (S2), but during engine warm-up (S 3) The engine rotation fluctuation is detected, and the ignition timing ADV is corrected to the retard side so that the stability limit is reached (S4). Then, based on the retard amount of the ignition timing by the stability limit control, the water temperature, and the fuel property (heavy and light), the engine inlet A / The lean amount of the outlet A / F with respect to F is calculated (S5). Then, based on the lean amount, the fuel injection amount TI is corrected to the increasing side (S6).
Inventors
- 👤 幸大 ▲吉▼沢
- 👤 Yukihiro Yoshizawa
- 👤 Yasuyuki Ito
- 👤 泰之 伊藤
- 👤 Koji Ishihara
- 👤 康二 石原
- 👤 Shigeaki Kakizaki
- 👤 成章 柿崎
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.