13 results about "Gasoline direct injection" patented technology

The present disclosure provides fuel additives including Mannich detergent additive(s) and succinimide detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines.

A fuel delivery system for a vehicle having an engine configured to selectively operate between a port fuel injection (PFI) mode, a gasoline direct injection (GDI) mode, and a port and direct fuel injection (PDI) mode. The fuel delivery system includes a PFI system including a plurality of PFI injectors configured to supply fuel to the engine during a PFI mode, and a GDI system including a plurality of GDI injectors configured to supply fuel to the engine during a GDI mode. The fuel system monitor is configured to monitor the fuel delivery system when operating in a PFI mode and to attribut any fuel delivery system failure occurring during the PFI mode to the PFI system only, and to monitor the fuel delivery system when operating in a GDI mode and to attribut any fuel delivery system failure occurring during the GDI mode to the PFI system only. And attributing any fuel supply system failure occurring during the GDI mode to the GDI system only.

Fuel additive compositions having at least one acylated detergent, at least one Mannich detergent, and at least one polyether and / or polyetheramine. The acylated detergent may be the reaction product of a hydrocarbyl-substituted acylating agent and a nitrogen containing compound having at least one amino group, that may optionally be quaternizable, and at least one oxygen or nitrogen atom capable of reacting with the hydrocarbyl-substituted acylating agent. The compositions are useful for reducing the formation of carbonaceous deposits and / or cleaning carbonaceous deposits in an engine, such as a gasoline direct injection engine.

The utility model relates to the technical field of engine tail gas, and discloses a gasoline direct injection engine tail gas particle catcher which comprises a shell, one side of the shell is fixedly connected with an air inlet, the side, opposite to the air inlet, of the shell is hollow, the surface of the air inlet is sleeved with a tail gas pipe, and the tail gas pipe is provided with a gas outlet. An air inlet is formed in the upper surface of the shell, a fixing mechanism is arranged on the surface of the air inlet, a filter plate penetrates through the upper surface of the shell and is in sliding connection with the interior of the shell, and a locking mechanism is arranged on one side of the filter plate. According to the gasoline direct injection engine tail gas particle trap, the fixing mechanism, the filter plate and the locking mechanism are arranged, so that the gasoline direct injection engine tail gas particle trap can be directly mounted at an outlet of an automobile exhaust pipeline, the mounting and dismounting efficiency is improved, and meanwhile, the filter plate and the locking mechanism are arranged, so that after the filter plate loses efficacy after being used for a long time, the filter plate cannot be damaged. And the device can be pulled out from the shell for replacement under the action of the locking mechanism, so that the service life of the device is prolonged.

The present disclosure provides fuel additives including Mannich detergent additive(s) and Mannich-based quaternary ammonium salt detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines.

A fuel additive including a combination of a nitrogen-containing fuel detergent and a polyether amine. The foregoing combination capable of use with hydrocarbon fuels (e.g., gasoline optionally with ethanol therein) or in fuel additive concentrate compositions to be diluted by a hydrogen fuel. The combination of the polyether amine and the nitrogen-containing fuel detergent may prevent or remove carbonaceous deposits in internal combustion engines, especially gasoline direct injection engines.

The present disclosure relates to fuel additive packages, fuels, and methods of achieving emission particulate reductions in gasoline direct injection (GDI) engines using select Mannich detergents (e.g., reaction products of a hydrocarbyl-substituted hydroxyaromatic compound, an aldehyde, and an amine). In one approach or embodiment, the select Mannich detergents herein for emissions particulate reductions include one or more of the following characteristics: (i) certain molar ratios of the hydroxyaromatic compound, the amine, and the aldehyde; (ii) select oligomer structures; and / or (iii) certain isomeric forms of polyisobutylene substituents on the hydroxyaromatic compound.

The invention relates to a closed-loop control method for injection flow of an oil injector of a gasoline direct injection engine. The method comprises the following steps: performing second-order filtering processing on fuel rail pressure P to output Pfilt; carrying out discrete difference on the Pfilt to obtain a fuel rail pressure deviation Pdef; the fuel rail pressure deviation Pdef is subjected to first-order filtering processing, and Pdef-filt is output; the absolute value of the Pdef-filt is summed to obtain the fuel index FIinj of the current fuel injector; the fuel index difference delta FI between the single fuel injector and the reference fuel injector is multiplied by the fuel injection pulse width proportional gain gain to obtain a compensation fuel injection pulse width delta pw; and the fuel injection pulse width pwinj of the compensated single fuel injector is obtained by adding the fuel injection pulse width pwmaster of the reference fuel injector to the compensation fuel injection pulse width delta pw. Compared with the prior art, accurate fuel control of the fuel injector in a nonlinear area is met, and emission of a direct injection engine in a high-pressure gasoline cylinder is effectively reduced.

The present disclosure provides fuel additives including Mannich detergent additive(s) and Mannich-based quaternary ammonium salt detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines.

The present disclosure provides fuel additives including Mannich detergent additive(s) and succinimide detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines.

The invention discloses an adjustable multi-fuel jet high-altitude ignition device for a rotor engine. The adjustable multi-fuel jet high-altitude ignition device comprises a jet ignition device, an adjusting device, a rotor engine body, an oil injection system and a control system, one end of the jet ignition device is installed on a cylinder body of the rotor engine body, the other end of the jet ignition device is connected with the adjusting device, and the oil injection system is installed on an air inlet channel of the rotor engine body and the jet ignition device and used for aviation fuel air inlet premixing and gasoline in-cylinder direct injection. The control system is connected with a spark plug of the jet ignition device and the tail end of the oil injection system and controls the adjusting device through the driving motor so as to adjust the deflection angle of a combustion chamber liner of the rotor engine body. According to the active pre-combustion chamber structure of the engine, cylinder pressure at different altitudes is measured through the cylinder pressure sensor, the auxiliary fuel injection amount and the number of the jet flow holes are adjusted, premixed mixed gas in the main combustion chamber is ignited through high-temperature jet flow of the pre-combustion chamber, efficient and sufficient combustion of aviation fuel and gasoline mixed fuel in the low-pressure environment is achieved, and the combustion efficiency is improved. High-altitude power performance of the engine is provided, and emission is reduced.

This disclosure generally relates to filters, methods, and systems for filtering particulate matter from the exhaust of internal combustion engines such as gasoline direct injection engines, as well as methods for preparing particulate filters.

The present disclosure provides fuel additives including Mannich detergent additive(s) and Mannich-based quaternary ammonium salt detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines.