CHEVROLET FUEL INJECTION
Detroit's first fuel-injection engine (below) achieves faster response, quicker starting, smoother idling and greater fuel economy than conventional carburetion. Fuel flow is controlled by air pressure. While engine idles, air entering cleaner (1) flows continuously through ducts (2) to fuel nozzles (3). With power on, the balance of clean air (4) passes throttle valve (5) into intake manifold (6) to intake ports (7) to mix with injected fuel. Throttle valve (5), responding to accelerator, controls the air flow, and thus the system. Fuel from fuel pump (11) enters at (8), admitted by valve (9). Fuel (arrow) splashes into the reservoir (10), moves through pump (11) to passage (12) and up to ball-check (13), where it is pumped to fuel lines (14), thence to nozzle, in which it is atomized and sprayed into air at intake port (7). Mixture passes valve (15) into the combustion chamber (16) on the intake stroke. During deceleration or coasting, vacuum tube (17) operated by high vacuum at closed throttle valve (vertical position) signals diaphragm (18) above fuel pump (11), raising diaphragm and thus causing fuel to return to the reservoir (10). For fast acceleration, movable pivot (19) is operated by fuel-enrichment diaphragm (20), controlled by reduced vacuum created as air rushes past opening (21) at full throttle (horizontal position). Plunger (22) moves down, increasing fuel flow to injection nozzles. Electric choke (23) operates on vacuum system (24) for cold starts.
Industry's first standard supercharger (on Golden Hawks) hikes performance. Entering air is rushed by finned impeller (1) through nautiluslike chamber (arrows) into final passage (2) to carburetor (from 3). At lower speeds, some air (4) enters small holes and flows (arrows) to solenoid assembly (5), which either permits air to act on piston (6) or stops the flow. As engine speed decreases, air flow forces piston to push movable inner surface (7) of variable-ratio pulley toward fixed outer lip. This forces drive belt up, reduces impeller speed at low throttle. At full throttle, piston retreats, impeller speeds up and blowing force increases.
Front coil springs are out, and torsion bars are in on all Chrysler group cars. Main elements of new suspension are torsion springs (1), which resist, by twisting, forces which tend to throw the car off level. Other elements are upper control arms (2), lower control arms (3), lower control-arm struts (4), sway bar (5), rubber-isolated sway bar hinges (6), anti-brake-dip control-arm mounts (7), shock absorbers (8), hand-set car-leveling devices (9) and new outboard rear springs (10). System reduces front-end diving on quick stops, improves cornering stability and cuts vibration.