A torch igniter includes an auxiliary fuel injector; an ignition source; and an igniter body carrying the auxiliary fuel injector and the ignition source. The igniter body includes an auxiliary combustion chamber having a side wall extending axially from a first end wall to a second end wall. In some examples, at least a portion of the side wall includes a distributed pattern of cooling apertures, with each of the cooling apertures extending obliquely from an outer surface of the side wall to an inner surface of the side wall. In some examples, the second end wall defines a fluid outlet leading to an outlet tube in fluid communication with the primary combustion chamber, at least a portion of the outlet tube including a distributed pattern of dilution apertures.

A fresh-air intake according to aspects of the disclosure includes an outer cover having a pair of side panels disposed in a generally parallel spaced relationship, a top panel coupled to, and disposed generally perpendicular to, each panel of the pair of side panels, a bottom panel disposed generally parallel to the top panel, and a front panel coupled to, and disposed generally perpendicular to, each panel of the pair of side panels and the top panel, the front panel having a window formed therein, a supply line coupled to the bottom panel, a weir extending above the bottom panel and surrounding a junction with the supply line, a baffle disposed inside the outer cover, the baffle being disposed inwardly of the window so as to prevent infiltration of moisture into the supply line, and a weep hole formed in the bottom panel.

A torch igniter includes an auxiliary fuel injector; an ignition source; and an igniter body carrying the auxiliary fuel injector and the ignition source. The igniter body includes an auxiliary combustion chamber having a side wall extending axially from a first end wall to a second end wall, the side wall defining an interior cavity between the first and second end walls. The igniter body further includes a premixing cup residing within the interior cavity including a cylindrical wall radially surrounding the auxiliary fuel injector and an auxiliary air inlet, the cylindrical wall of the premixing cup protruding axially outward relative to the first end wall of the auxiliary combustion chamber through a portion of the interior cavity to delineate a premixing zone radially inward of the cylindrical wall and a recirculation zone radially outward of the cylindrical wall.

The present invention discloses an outdoor gas heater, comprising an outer cover, an outer cover side baffle, a gas injection pipe, a ceramic burner, a body box, a control box connecting support frame, a control box sealing plate, a control box, a wall-mounted bracket and a long open a flame connecting pipe. Four ceramic burners are fixed side by side in the body box, a gas injection pipe is fixed on the lower side of the body box, and a gas injection pipe is sealingly connected to the four ceramic burners; the outer open end of the body box is locked to the outer cover, and the side of the body box opposite to the outer opening thereof is locked to the control box connecting support frame. The control box connecting support frame is a U-shaped structure, and side wall of which is locked on both sides of the control box, and the outer side opening of the control box is locked to the control box sealing plate; the side of the control box opposite to the outer opening is locked to the wall-mounted bracket. The structure is reasonable in design and convenient to use, and its installation and use is very convenient and safety is greatly improved; moreover, it can save energy and maintain the demand for power supply for a long time.

A gas combustor having function of adjusting combusting angle includes: a fixed housing having a top end thereof transversally formed with a rod hole; and a rotary housing pivoted with the fixed housing, where one side of the rotary housing is formed with a shaft hole having a plurality of annularly-arranged teeth slots for receiving a locking mechanism having an unlocking press button, a connection rod extrudes from an inner surface of the unlocking press button to pass the shaft hole, be sleeved with a stretch spring and enter the rod hole, the connection rod is connected to a passive member in the fixed housing, the passive member has at least one convex tooth protruding toward the plurality of teeth slots, and each of the at least one convex tooth is to be inserted and positioned in one of the teeth slots to form a locked status.

The proposed solution relates to a combustion chamber assembly of an engine (T), in which an overrun of a spark plug is defined with a specific outer cone and a specific inner cone, and mixing air holes of a first arrangement and of at least one second arrangement that lie at least partially in a partial region of the overrun of the spark plug, said overrun being defined by the outer cone and the inner cone and extending downstream of the spark plug as far as an inner apex point (Si) of the inner cone, are formed with a flow cross section which is different from a flow cross section which the mixing air holes adjoining in the circumferential direction (U) of the respective arrangement have.

Emissions of NO.sub.x and/or CO are reduced at the stack by systems and methods wherein a primary fuel is thoroughly mixed with a specific range of excess combustion air. The primary fuel-air mixture is then discharged and anchored within a combustion chamber of a burner. Further, the systems and methods provide for dynamically controlling NO.sub.x content in emissions from a furnace by adjusting the flow of primary fuel and of a secondary stage fuel, and in some cases controlling the amount or placement of combustion air into the furnace.

A fuel-operated vehicle heater, combustion chamber assembly unit includes a combustion chamber housing (14) having a combustion chamber bottom (18) and a combustion chamber circumferential wall (16) extending in a housing longitudinal axis (L) direction to define a combustion chamber (20). A porous evaporator medium (60) is on the combustion chamber circumferential wall or/and the combustion chamber bottom, at an inner side facing the combustion chamber. A fuel feed line (62) feeds liquid fuel into the porous evaporator medium. A first combustion air feed device (68), associated with the combustion chamber bottom, feeds primary combustion air (VP) into a first combustion zone (50) at which the porous evaporator medium is arranged. A second combustion air feed device (70), following the first combustion zone in the housing longitudinal axis direction feeds secondary combustion air (VS) into the combustion chamber at an axially spaced location from the first combustion zone.

A gas burner includes a base with a first body and a raised annular band on an upper surface of the first body. A flange is formed about an outer periphery of the first body wherein the raised annular band and the flange define a first annular recess therebetween. A first notch is formed in a lower surface of the first body and extends through the flange and communicates with the first annular recess. The first notch is adapted to accommodate spark ignitor therein. A slot is formed in the raised annular band. A first cap includes a peripheral side wall having a distal end dimensioned to be received within the first annular recess. A gap between the distal end and a bottom wall of the first annular recess when the first cap is received therein provides fluid communication between the slot and the first notch.

A burner assembly (40) for providing a flame and combustion gas to a plurality of inlets includes a support member (70) having a back surface and an inner surface. An elongated opening (72) is formed in the support member. A burner (74) is connected to the support member adjacent the opening and extending upstream from the back surface. The burner is arranged in fluid communication with the plurality of inlets. An interior surface of the burner is contoured to direct flames generally inwardly.