Back to results
US 5,186,139 AGranted
Diesel engine
AssigneeMitsubishi Jidosha Kogyo Kabushi Kaisha
InventorYoshimasa Matsura
Life of this patent
Estimating the term…
Abstract
A diesel engine includes a variable swirl forming mechanism, an exhaust gas recirculation (EGR) control mechanism, and an injection timing control mechanism. The variable swirl forming mechanism forms strong, middle or weak air swirls in a combustion chamber according to engine loads and engine speeds. The EGR control mechanism recirculates a part of exhaust gas to the combustion chamber according to the engine loads and the engine speeds. The injection timing control mechanism advances or retards the injection timing according to the engine loads and the engine speeds.
Claims14
A diesel engine comprising:
- (a) a variable swirl forming mechanism for generating strong air swirls in a combustion chamber when the engine is working, at low speeds and high loads, middle air swirls in said combustion chamber when the engine is working at low loads and at middle speeds and high loads, and weak air swirls in the combustion chamber when the engine is working at high speeds and high loads;
- (b) an exhaust gas recirculation (EGR) control mechanism for recirculating a part of exhaust gas to said combustion chamber when the engine is working at low and middle speeds and low loads;
- (c) an injection timing control mechanism for advancing the fuel injection timing when the engine is working at low loads, and for retarding the fuel injection timing when the engine is working at middle and high loads;
- and
- (d) a controller for controlling said variable swirl forming mechanism, said EGR control mechanism and said injection timing control mechanism according to loads and speeds of the engine.
2 more elements
Dependencies are inferred from the claim text.